{"id":343,"date":"2022-07-13T16:15:24","date_gmt":"2022-07-13T08:15:24","guid":{"rendered":"https:\/\/www.lazybirds.top\/?p=343"},"modified":"2022-07-13T16:15:24","modified_gmt":"2022-07-13T08:15:24","slug":"d2l%e8%87%aa%e5%ad%a6%e7%ac%94%e8%ae%b0-6-%e5%8d%b7%e7%a7%af%e7%a5%9e%e7%bb%8f%e7%bd%91%e7%bb%9c","status":"publish","type":"post","link":"https:\/\/www.lazybirds.top\/?p=343","title":{"rendered":"d2l\u81ea\u5b66\u7b14\u8bb0 &#8211; 6.\u5377\u79ef\u795e\u7ecf\u7f51\u7edc"},"content":{"rendered":"\n<p><a href=\"https:\/\/zh.d2l.ai\/\">\u300a\u52a8\u624b\u5b66\u6df1\u5ea6\u5b66\u4e60\u300b \u2014 \u52a8\u624b\u5b66\u6df1\u5ea6\u5b66\u4e60 2.0.0-beta0 documentation (d2l.ai)<\/a><\/p>\n\n\n\n<!--more-->\n\n\n\n      <meta charset=\"utf-8\">\n      <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n      \n      <link rel=\"stylesheet\" href=\"https:\/\/www.lazybirds.top\/katex\/katex.min.css\">\n      \n      \n      \n      \n      \n      \n      \n      \n      \n      <style>\n      \/**\n * prism.js Github theme based on GitHub's theme.\n * @author Sam Clarke\n *\/\ncode[class*=\"language-\"],\npre[class*=\"language-\"] {\n  color: #333;\n  background: none;\n  font-family: Consolas, \"Liberation Mono\", Menlo, Courier, monospace;\n  text-align: left;\n  white-space: pre;\n  word-spacing: normal;\n  word-break: normal;\n  word-wrap: normal;\n  line-height: 1.4;\n\n  -moz-tab-size: 8;\n  -o-tab-size: 8;\n  tab-size: 8;\n\n  -webkit-hyphens: none;\n  -moz-hyphens: none;\n  -ms-hyphens: none;\n  hyphens: none;\n}\n\n\/* Code blocks *\/\npre[class*=\"language-\"] {\n  padding: .8em;\n  overflow: auto;\n  \/* border: 1px solid #ddd; *\/\n  border-radius: 3px;\n  \/* background: #fff; *\/\n  background: #f5f5f5;\n}\n\n\/* Inline code *\/\n:not(pre) > code[class*=\"language-\"] {\n  padding: .1em;\n  border-radius: .3em;\n  white-space: normal;\n  background: #f5f5f5;\n}\n\n.token.comment,\n.token.blockquote {\n  color: #969896;\n}\n\n.token.cdata {\n  color: #183691;\n}\n\n.token.doctype,\n.token.punctuation,\n.token.variable,\n.token.macro.property {\n  color: #333;\n}\n\n.token.operator,\n.token.important,\n.token.keyword,\n.token.rule,\n.token.builtin {\n  color: #a71d5d;\n}\n\n.token.string,\n.token.url,\n.token.regex,\n.token.attr-value {\n  color: #183691;\n}\n\n.token.property,\n.token.number,\n.token.boolean,\n.token.entity,\n.token.atrule,\n.token.constant,\n.token.symbol,\n.token.command,\n.token.code {\n  color: #0086b3;\n}\n\n.token.tag,\n.token.selector,\n.token.prolog {\n  color: #63a35c;\n}\n\n.token.function,\n.token.namespace,\n.token.pseudo-element,\n.token.class,\n.token.class-name,\n.token.pseudo-class,\n.token.id,\n.token.url-reference .token.variable,\n.token.attr-name {\n  color: #795da3;\n}\n\n.token.entity {\n  cursor: help;\n}\n\n.token.title,\n.token.title .token.punctuation {\n  font-weight: bold;\n  color: #1d3e81;\n}\n\n.token.list {\n  color: #ed6a43;\n}\n\n.token.inserted {\n  background-color: #eaffea;\n  color: #55a532;\n}\n\n.token.deleted {\n  background-color: #ffecec;\n  color: #bd2c00;\n}\n\n.token.bold {\n  font-weight: bold;\n}\n\n.token.italic {\n  font-style: italic;\n}\n\n\n\/* JSON *\/\n.language-json .token.property {\n  color: #183691;\n}\n\n.language-markup .token.tag .token.punctuation {\n  color: #333;\n}\n\n\/* CSS *\/\ncode.language-css,\n.language-css .token.function {\n  color: #0086b3;\n}\n\n\/* YAML *\/\n.language-yaml .token.atrule {\n  color: #63a35c;\n}\n\ncode.language-yaml {\n  color: #183691;\n}\n\n\/* Ruby *\/\n.language-ruby .token.function {\n  color: #333;\n}\n\n\/* Markdown *\/\n.language-markdown .token.url {\n  color: #795da3;\n}\n\n\/* Makefile *\/\n.language-makefile .token.symbol {\n  color: #795da3;\n}\n\n.language-makefile .token.variable {\n  color: #183691;\n}\n\n.language-makefile .token.builtin {\n  color: #0086b3;\n}\n\n\/* Bash *\/\n.language-bash .token.keyword {\n  color: #0086b3;\n}\n\n\/* highlight *\/\npre[data-line] {\n  position: relative;\n  padding: 1em 0 1em 3em;\n}\npre[data-line] .line-highlight-wrapper {\n  position: absolute;\n  top: 0;\n  left: 0;\n  background-color: transparent;\n  display: block;\n  width: 100%;\n}\n\npre[data-line] .line-highlight {\n  position: absolute;\n  left: 0;\n  right: 0;\n  padding: inherit 0;\n  margin-top: 1em;\n  background: hsla(24, 20%, 50%,.08);\n  background: linear-gradient(to right, hsla(24, 20%, 50%,.1) 70%, hsla(24, 20%, 50%,0));\n  pointer-events: none;\n  line-height: inherit;\n  white-space: pre;\n}\n\npre[data-line] .line-highlight:before, \npre[data-line] .line-highlight[data-end]:after {\n  content: attr(data-start);\n  position: absolute;\n  top: .4em;\n  left: .6em;\n  min-width: 1em;\n  padding: 0 .5em;\n  background-color: hsla(24, 20%, 50%,.4);\n  color: hsl(24, 20%, 95%);\n  font: bold 65%\/1.5 sans-serif;\n  text-align: center;\n  vertical-align: .3em;\n  border-radius: 999px;\n  text-shadow: none;\n  box-shadow: 0 1px white;\n}\n\npre[data-line] .line-highlight[data-end]:after {\n  content: attr(data-end);\n  top: auto;\n  bottom: .4em;\n}html body{font-family:\"Helvetica Neue\",Helvetica,\"Segoe UI\",Arial,freesans,sans-serif;font-size:16px;line-height:1.6;color:#333;background-color:#fff;overflow:initial;box-sizing:border-box;word-wrap:break-word}html body>:first-child{margin-top:0}html body h1,html body h2,html body h3,html body h4,html body h5,html body h6{line-height:1.2;margin-top:1em;margin-bottom:16px;color:#000}html body h1{font-size:2.25em;font-weight:300;padding-bottom:.3em}html body h2{font-size:1.75em;font-weight:400;padding-bottom:.3em}html body h3{font-size:1.5em;font-weight:500}html body h4{font-size:1.25em;font-weight:600}html body h5{font-size:1.1em;font-weight:600}html body h6{font-size:1em;font-weight:600}html body h1,html body h2,html body h3,html body h4,html body h5{font-weight:600}html body h5{font-size:1em}html body h6{color:#5c5c5c}html body strong{color:#000}html body del{color:#5c5c5c}html body a:not([href]){color:inherit;text-decoration:none}html body a{color:#08c;text-decoration:none}html body a:hover{color:#00a3f5;text-decoration:none}html body img{max-width:100%}html body>p{margin-top:0;margin-bottom:16px;word-wrap:break-word}html body>ul,html body>ol{margin-bottom:16px}html body ul,html body ol{padding-left:2em}html body ul.no-list,html body ol.no-list{padding:0;list-style-type:none}html body ul ul,html body ul ol,html body ol ol,html body ol ul{margin-top:0;margin-bottom:0}html body li{margin-bottom:0}html body li.task-list-item{list-style:none}html body li>p{margin-top:0;margin-bottom:0}html body .task-list-item-checkbox{margin:0 .2em .25em -1.8em;vertical-align:middle}html body .task-list-item-checkbox:hover{cursor:pointer}html body blockquote{margin:16px 0;font-size:inherit;padding:0 15px;color:#5c5c5c;background-color:#f0f0f0;border-left:4px solid #d6d6d6}html body blockquote>:first-child{margin-top:0}html body blockquote>:last-child{margin-bottom:0}html body hr{height:4px;margin:32px 0;background-color:#d6d6d6;border:0 none}html body table{margin:10px 0 15px 0;border-collapse:collapse;border-spacing:0;display:block;width:100%;overflow:auto;word-break:normal;word-break:keep-all}html body table th{font-weight:bold;color:#000}html body table td,html body table th{border:1px solid #d6d6d6;padding:6px 13px}html body dl{padding:0}html body dl dt{padding:0;margin-top:16px;font-size:1em;font-style:italic;font-weight:bold}html body dl dd{padding:0 16px;margin-bottom:16px}html body code{font-family:Menlo,Monaco,Consolas,'Courier New',monospace;font-size:.85em !important;color:#000;background-color:#f0f0f0;border-radius:3px;padding:.2em 0}html body code::before,html body code::after{letter-spacing:-0.2em;content:\"\\00a0\"}html body pre>code{padding:0;margin:0;font-size:.85em !important;word-break:normal;white-space:pre;background:transparent;border:0}html body .highlight{margin-bottom:16px}html body .highlight pre,html body pre{padding:1em;overflow:auto;font-size:.85em !important;line-height:1.45;border:#d6d6d6;border-radius:3px}html body .highlight pre{margin-bottom:0;word-break:normal}html body pre code,html body pre tt{display:inline;max-width:initial;padding:0;margin:0;overflow:initial;line-height:inherit;word-wrap:normal;background-color:transparent;border:0}html body pre code:before,html body pre tt:before,html body pre code:after,html body pre tt:after{content:normal}html body p,html body blockquote,html body ul,html body ol,html body dl,html body pre{margin-top:0;margin-bottom:16px}html body kbd{color:#000;border:1px solid #d6d6d6;border-bottom:2px solid #c7c7c7;padding:2px 4px;background-color:#f0f0f0;border-radius:3px}@media print{html body{background-color:#fff}html body h1,html body h2,html body h3,html body h4,html body h5,html body h6{color:#000;page-break-after:avoid}html body blockquote{color:#5c5c5c}html body pre{page-break-inside:avoid}html body table{display:table}html body img{display:block;max-width:100%;max-height:100%}html body pre,html body code{word-wrap:break-word;white-space:pre}}.markdown-preview{width:100%;height:100%;box-sizing:border-box}.markdown-preview .pagebreak,.markdown-preview .newpage{page-break-before:always}.markdown-preview pre.line-numbers{position:relative;padding-left:3.8em;counter-reset:linenumber}.markdown-preview pre.line-numbers>code{position:relative}.markdown-preview pre.line-numbers .line-numbers-rows{position:absolute;pointer-events:none;top:1em;font-size:100%;left:0;width:3em;letter-spacing:-1px;border-right:1px solid #999;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.markdown-preview pre.line-numbers .line-numbers-rows>span{pointer-events:none;display:block;counter-increment:linenumber}.markdown-preview pre.line-numbers .line-numbers-rows>span:before{content:counter(linenumber);color:#999;display:block;padding-right:.8em;text-align:right}.markdown-preview .mathjax-exps .MathJax_Display{text-align:center !important}.markdown-preview:not([for=\"preview\"]) .code-chunk .btn-group{display:none}.markdown-preview:not([for=\"preview\"]) .code-chunk .status{display:none}.markdown-preview:not([for=\"preview\"]) .code-chunk .output-div{margin-bottom:16px}.scrollbar-style::-webkit-scrollbar{width:8px}.scrollbar-style::-webkit-scrollbar-track{border-radius:10px;background-color:transparent}.scrollbar-style::-webkit-scrollbar-thumb{border-radius:5px;background-color:rgba(150,150,150,0.66);border:4px solid rgba(150,150,150,0.66);background-clip:content-box}html body[for=\"html-export\"]:not([data-presentation-mode]){position:relative;width:100%;height:100%;top:0;left:0;margin:0;padding:0;overflow:auto}html body[for=\"html-export\"]:not([data-presentation-mode]) .markdown-preview{position:relative;top:0}@media screen and (min-width:914px){html body[for=\"html-export\"]:not([data-presentation-mode]) .markdown-preview{padding:2em calc(50% - 457px + 2em)}}@media screen and (max-width:914px){html body[for=\"html-export\"]:not([data-presentation-mode]) .markdown-preview{padding:2em}}@media screen and (max-width:450px){html body[for=\"html-export\"]:not([data-presentation-mode]) .markdown-preview{font-size:14px !important;padding:1em}}@media print{html body[for=\"html-export\"]:not([data-presentation-mode]) #sidebar-toc-btn{display:none}}html body[for=\"html-export\"]:not([data-presentation-mode]) #sidebar-toc-btn{position:fixed;bottom:8px;left:8px;font-size:28px;cursor:pointer;color:inherit;z-index:99;width:32px;text-align:center;opacity:.4}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] #sidebar-toc-btn{opacity:1}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc{position:fixed;top:0;left:0;width:300px;height:100%;padding:32px 0 48px 0;font-size:14px;box-shadow:0 0 4px rgba(150,150,150,0.33);box-sizing:border-box;overflow:auto;background-color:inherit}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar{width:8px}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar-track{border-radius:10px;background-color:transparent}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc::-webkit-scrollbar-thumb{border-radius:5px;background-color:rgba(150,150,150,0.66);border:4px solid rgba(150,150,150,0.66);background-clip:content-box}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc a{text-decoration:none}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc ul{padding:0 1.6em;margin-top:.8em}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc li{margin-bottom:.8em}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc ul{list-style-type:none}html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{left:300px;width:calc(100% -  300px);padding:2em calc(50% - 457px -  150px);margin:0;box-sizing:border-box}@media screen and (max-width:1274px){html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{padding:2em}}@media screen and (max-width:450px){html body[for=\"html-export\"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview{width:100%}}html body[for=\"html-export\"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .markdown-preview{left:50%;transform:translateX(-50%)}html body[for=\"html-export\"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .md-sidebar-toc{display:none}\n\/* Please visit the URL below for more information: *\/\n\/*   https:\/\/shd101wyy.github.io\/markdown-preview-enhanced\/#\/customize-css *\/\n\n      <\/style>\n      \n\n      <div class=\"mume markdown-preview  \">\n      \n\n<p>Convolutional Neural Network, CNN<\/p>\n<h1 class=\"mume-header\" id=\"%E5%8D%B7%E7%A7%AF%E5%B1%82\">&#x5377;&#x79EF;&#x5C42;<\/h1>\n\n<h2 class=\"mume-header\" id=\"%E4%B8%A4%E4%B8%AA%E5%8E%9F%E5%88%99\">&#x4E24;&#x4E2A;&#x539F;&#x5219;<\/h2>\n\n<p>&#x6211;&#x4EEC;&#x4ECE;&#x591A;&#x5C42;&#x611F;&#x77E5;&#x673A;&#x5F00;&#x59CB;&#xFF0C;&#x5168;&#x8FDE;&#x63A5;&#x5C42;&#x53EF;&#x4EE5;&#x8868;&#x793A;&#x4E3A;&#xFF1A;<br>\n<span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><semantics><mtable rowspacing=\"0.25em\" columnalign=\"right left\" columnspacing=\"0em\"><mtr><mtd><mstyle scriptlevel=\"0\" displaystyle=\"true\"><mrow><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">H<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><\/mrow><\/msub><\/mrow><\/mstyle><\/mtd><mtd><mstyle scriptlevel=\"0\" displaystyle=\"true\"><mrow><mrow><\/mrow><mo>=<\/mo><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">U<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><\/mrow><\/msub><mo>+<\/mo><munder><mo>&#x2211;<\/mo><mi>k<\/mi><\/munder><munder><mo>&#x2211;<\/mo><mi>l<\/mi><\/munder><mo stretchy=\"false\">[<\/mo><mi>W<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo separator=\"true\">,<\/mo><mi>k<\/mi><mo separator=\"true\">,<\/mo><mi>l<\/mi><\/mrow><\/msub><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">X<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>k<\/mi><mo separator=\"true\">,<\/mo><mi>l<\/mi><\/mrow><\/msub><\/mrow><\/mstyle><\/mtd><\/mtr><mtr><mtd><mstyle scriptlevel=\"0\" displaystyle=\"true\"><mrow><\/mrow><\/mstyle><\/mtd><mtd><mstyle scriptlevel=\"0\" displaystyle=\"true\"><mrow><mrow><\/mrow><mo>=<\/mo><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">U<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><\/mrow><\/msub><mo>+<\/mo><munder><mo>&#x2211;<\/mo><mi>a<\/mi><\/munder><munder><mo>&#x2211;<\/mo><mi>b<\/mi><\/munder><mo stretchy=\"false\">[<\/mo><mi>V<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo separator=\"true\">,<\/mo><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>b<\/mi><\/mrow><\/msub><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">X<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo>+<\/mo><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo>+<\/mo><mi>b<\/mi><\/mrow><\/msub><\/mrow><\/mstyle><\/mtd><\/mtr><\/mtable><annotation encoding=\"application\/x-tex\">\\begin{aligned}\n{[\\mathbf{H}]_{i, j} } &amp;=[\\mathbf{U}]_{i, j}+\\sum_{k} \\sum_{l}[W]_{i, j, k, l}[\\mathbf{X}]_{k, l} \\\\\n&amp;=[\\mathbf{U}]_{i, j}+\\sum_{a} \\sum_{b}[V]_{i, j, a, b}[\\mathbf{X}]_{i+a, j+b}\n\\end{aligned}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:5.3042em;vertical-align:-2.4021em;\"><\/span><span class=\"mord\"><span class=\"mtable\"><span class=\"col-align-r\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:2.9021em;\"><span style=\"top:-4.9021em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"mord\"><span class=\"mord\"><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">H<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span style=\"top:-2.25em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"mord\"><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:2.4021em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"col-align-l\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:2.9021em;\"><span style=\"top:-4.9021em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"mord\"><span class=\"mord\"><\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">=<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">U<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">+<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.8479em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right:0.03148em;\">k<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3021em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.1667em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.8479em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right:0.01968em;\">l<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3021em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\" style=\"margin-right:0.13889em;\">W<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.03148em;\">k<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.01968em;\">l<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">X<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right:0.03148em;\">k<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.01968em;\">l<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span style=\"top:-2.25em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"mord\"><span class=\"mord\"><\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">=<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">U<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">+<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.9em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.25em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.1667em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.8479em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3021em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathnormal\" style=\"margin-right:0.22222em;\">V<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">X<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:2.4021em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 class=\"mume-header\" id=\"%E5%B9%B3%E7%A7%BB%E4%B8%8D%E5%8F%98%E6%80%A7translation-invariance\">&#x5E73;&#x79FB;&#x4E0D;&#x53D8;&#x6027;&#xFF08;translation invariance&#xFF09;<\/h3>\n\n<p>&#x4E0D;&#x7BA1;&#x68C0;&#x6D4B;&#x5BF9;&#x8C61;&#x51FA;&#x73B0;&#x5728;&#x54EA;&#xFF0C;&#x795E;&#x7ECF;&#x7F51;&#x7EDC;&#x7684;&#x524D;&#x51E0;&#x5C42;&#x5E94;&#x5BF9;&#x76F8;&#x540C;&#x56FE;&#x50CF;&#x533A;&#x57DF;&#x5177;&#x6709;&#x76F8;&#x4F3C;&#x53CD;&#x5E94;&#x3002;<\/p>\n<p>&#x56E0;&#x6B64;&#xFF0C;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>V<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">V<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:0.6833em;\"><\/span><span class=\"mord mathnormal\" style=\"margin-right:0.22222em;\">V<\/span><\/span><\/span><\/span>&#x548C;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi mathvariant=\"bold\">U<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">\\mathbf{U}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:0.6861em;\"><\/span><span class=\"mord mathbf\">U<\/span><\/span><\/span><\/span>&#x4E0D;&#x4F9D;&#x8D56;&#x4E8E;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mo stretchy=\"false\">(<\/mo><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo stretchy=\"false\">)<\/mo><\/mrow><annotation encoding=\"application\/x-tex\">(i,j)<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1em;vertical-align:-0.25em;\"><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">i<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right:0.1667em;\"><\/span><span class=\"mord mathnormal\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span>&#x7684;&#x53D6;&#x503C;&#x3002;<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><semantics><mrow><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">H<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><\/mrow><\/msub><mo>=<\/mo><mi>u<\/mi><mo>+<\/mo><munder><mo>&#x2211;<\/mo><mi>a<\/mi><\/munder><munder><mo>&#x2211;<\/mo><mi>b<\/mi><\/munder><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">V<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>b<\/mi><\/mrow><\/msub><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">X<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo>+<\/mo><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo>+<\/mo><mi>b<\/mi><\/mrow><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">[\\mathbf{H}]_{i, j}=u+\\sum_{a} \\sum_{b}[\\mathbf{V}]_{a, b}[\\mathbf{X}]_{i+a, j+b}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1.0361em;vertical-align:-0.2861em;\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">H<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">=<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6667em;vertical-align:-0.0833em;\"><\/span><span class=\"mord mathnormal\">u<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">+<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:2.3521em;vertical-align:-1.3021em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.9em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.25em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.1667em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.05em;\"><span style=\"top:-1.8479em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3021em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\" style=\"margin-right:0.01597em;\">V<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">X<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h3 class=\"mume-header\" id=\"%E5%B1%80%E9%83%A8%E6%80%A7locality\">&#x5C40;&#x90E8;&#x6027;&#xFF08;locality&#xFF09;<\/h3>\n\n<p>&#x795E;&#x7ECF;&#x7F51;&#x7EDC;&#x7684;&#x524D;&#x51E0;&#x5C42;&#x5E94;&#x53EA;&#x63A2;&#x7D22;&#x8F93;&#x5165;&#x56FE;&#x50CF;&#x4E2D;&#x7684;&#x5C40;&#x90E8;&#x533A;&#x57DF;&#xFF0C;&#x4E0D;&#x5FC5;&#x8FC7;&#x5EA6;&#x5728;&#x610F;&#x56FE;&#x50CF;&#x4E2D;&#x76F8;&#x9694;&#x8F83;&#x8FDC;&#x533A;&#x57DF;&#x3002;<\/p>\n<p>&#x56E0;&#x6B64;&#xFF0C;&#x5F53;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi mathvariant=\"normal\">&#x2223;<\/mi><mi>a<\/mi><mi mathvariant=\"normal\">&#x2223;<\/mi><mo>&gt;<\/mo><mi mathvariant=\"normal\">&#x394;<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">|a|&gt;\\Delta<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1em;vertical-align:-0.25em;\"><\/span><span class=\"mord\">&#x2223;<\/span><span class=\"mord mathnormal\">a<\/span><span class=\"mord\">&#x2223;<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">&gt;<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6833em;\"><\/span><span class=\"mord\">&#x394;<\/span><\/span><\/span><\/span>&#x6216;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi mathvariant=\"normal\">&#x2223;<\/mi><mi>b<\/mi><mi mathvariant=\"normal\">&#x2223;<\/mi><mo>&gt;<\/mo><mi mathvariant=\"normal\">&#x394;<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">|b|&gt;\\Delta<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1em;vertical-align:-0.25em;\"><\/span><span class=\"mord\">&#x2223;<\/span><span class=\"mord mathnormal\">b<\/span><span class=\"mord\">&#x2223;<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">&gt;<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6833em;\"><\/span><span class=\"mord\">&#x394;<\/span><\/span><\/span><\/span>&#x65F6;&#xFF0C;&#x53EF;&#x4EE4;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">V<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>b<\/mi><\/mrow><\/msub><mo>=<\/mo><mn>0<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">[\\mathbf{V}]_{a, b}=0<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1.0361em;vertical-align:-0.2861em;\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\" style=\"margin-right:0.01597em;\">V<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">=<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6444em;\"><\/span><span class=\"mord\">0<\/span><\/span><\/span><\/span>&#x3002;<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"block\"><semantics><mrow><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">H<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mi>j<\/mi><\/mrow><\/msub><mo>=<\/mo><mi>u<\/mi><mo>+<\/mo><munderover><mo>&#x2211;<\/mo><mrow><mi>a<\/mi><mo>=<\/mo><mo>&#x2212;<\/mo><mi mathvariant=\"normal\">&#x394;<\/mi><\/mrow><mi mathvariant=\"normal\">&#x394;<\/mi><\/munderover><munderover><mo>&#x2211;<\/mo><mrow><mi>b<\/mi><mo>=<\/mo><mo>&#x2212;<\/mo><mi mathvariant=\"normal\">&#x394;<\/mi><\/mrow><mi mathvariant=\"normal\">&#x394;<\/mi><\/munderover><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">V<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>b<\/mi><\/mrow><\/msub><mo stretchy=\"false\">[<\/mo><mi mathvariant=\"bold\">X<\/mi><msub><mo stretchy=\"false\">]<\/mo><mrow><mi>i<\/mi><mo>+<\/mo><mi>a<\/mi><mo separator=\"true\">,<\/mo><mi>j<\/mi><mo>+<\/mo><mi>b<\/mi><mo>&#x22C5;<\/mo><\/mrow><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">[\\mathbf{H}]_{i j}=u+\\sum_{a=-\\Delta}^{\\Delta} \\sum_{b=-\\Delta}^{\\Delta}[\\mathbf{V}]_{a, b}[\\mathbf{X}]_{i+a, j+b \\cdot}<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:1.0361em;vertical-align:-0.2861em;\"><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">H<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">ij<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><span class=\"mrel\">=<\/span><span class=\"mspace\" style=\"margin-right:0.2778em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6667em;vertical-align:-0.0833em;\"><\/span><span class=\"mord mathnormal\">u<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">+<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:3.1888em;vertical-align:-1.3604em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.8283em;\"><span style=\"top:-1.8557em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mrel mtight\">=<\/span><span class=\"mord mtight\">&#x2212;<\/span><span class=\"mord mtight\">&#x394;<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><span style=\"top:-4.3em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">&#x394;<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3527em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right:0.1667em;\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.8283em;\"><span style=\"top:-1.8479em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">b<\/span><span class=\"mrel mtight\">=<\/span><span class=\"mord mtight\">&#x2212;<\/span><span class=\"mord mtight\">&#x394;<\/span><\/span><\/span><\/span><span style=\"top:-3.05em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span><span class=\"mop op-symbol large-op\">&#x2211;<\/span><\/span><\/span><span style=\"top:-4.3em;margin-left:0em;\"><span class=\"pstrut\" style=\"height:3.05em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">&#x394;<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:1.3604em;\"><span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\" style=\"margin-right:0.01597em;\">V<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\">b<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">[<\/span><span class=\"mord mathbf\">X<\/span><span class=\"mclose\"><span class=\"mclose\">]<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3361em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mpunct mtight\">,<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right:0.05724em;\">j<\/span><span class=\"mbin mtight\">+<\/span><span class=\"mord mathnormal mtight\">b<\/span><span class=\"mord mtight\">&#x22C5;<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.2861em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>&#x6B64;&#x5373;&#x4E00;&#x4E2A;&#x5377;&#x79EF;&#x5C42;&#x3002;<\/p>\n<h2 class=\"mume-header\" id=\"%E5%A1%AB%E5%85%85\">&#x586B;&#x5145;<\/h2>\n\n<pre data-role=\"codeBlock\" data-info=\"python\" class=\"language-python\">conv2d <span class=\"token operator\">=<\/span> nn<span class=\"token punctuation\">.<\/span>Conv2d<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> kernel_size<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> bias<span class=\"token operator\">=<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span>\n<\/pre><p>&#x5377;&#x79EF;&#x6838;&#x7684;&#x9AD8;&#x5EA6;&#x548C;&#x5BBD;&#x5EA6;&#x901A;&#x5E38;&#x4E3A;&#x5947;&#x6570;&#x3002;&#x9009;&#x62E9;&#x5947;&#x6570;&#x7684;&#x597D;&#x5904;&#x662F;&#xFF0C;&#x5F53;&#x9700;&#x8981;&#x4FDD;&#x6301;&#x7A7A;&#x95F4;&#x7EF4;&#x5EA6;&#x65F6;&#xFF0C;&#x9876;&#x90E8;&#x548C;&#x5E95;&#x90E8;&#xFF08;&#x5DE6;&#x4FA7;&#x548C;&#x53F3;&#x4FA7;&#xFF09;&#x586B;&#x5145;&#x7684;&#x884C;&#x6570;&#xFF08;&#x5217;&#x6570;&#xFF09;&#x76F8;&#x7B49;&#x3002;<\/p>\n<h2 class=\"mume-header\" id=\"%E6%AD%A5%E5%B9%85\">&#x6B65;&#x5E45;<\/h2>\n\n<pre data-role=\"codeBlock\" data-info=\"python\" class=\"language-python\">conv2d <span class=\"token operator\">=<\/span> nn<span class=\"token punctuation\">.<\/span>Conv2d<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> kernel_size<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> stride<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n<\/pre><h1 class=\"mume-header\" id=\"%E5%A4%9A%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA%E9%80%9A%E9%81%93\">&#x591A;&#x8F93;&#x5165;&#x8F93;&#x51FA;&#x901A;&#x9053;<\/h1>\n\n<h2 class=\"mume-header\" id=\"%E5%A4%9A%E8%BE%93%E5%85%A5%E9%80%9A%E9%81%93\">&#x591A;&#x8F93;&#x5165;&#x901A;&#x9053;<\/h2>\n\n<p>&#x5BF9;&#x6BCF;&#x4E2A;&#x901A;&#x9053;&#x8F93;&#x5165;&#x7684;&#x4E8C;&#x7EF4;&#x5F20;&#x91CF;&#x548C;&#x5377;&#x79EF;&#x6838;&#x7684;&#x4E8C;&#x7EF4;&#x5F20;&#x91CF;&#x8FDB;&#x884C;&#x4E92;&#x76F8;&#x5173;&#x8FD0;&#x7B97;&#xFF0C;&#x518D;&#x5BF9;&#x901A;&#x9053;&#x6C42;&#x548C;&#xFF08;&#x5C06;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msub><mi>c<\/mi><mi>i<\/mi><\/msub><\/mrow><annotation encoding=\"application\/x-tex\">c_i<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:0.5806em;vertical-align:-0.15em;\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">c<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.3117em;\"><span style=\"top:-2.55em;margin-left:0em;margin-right:0.05em;\"><span class=\"pstrut\" style=\"height:2.7em;\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">&#x200B;<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height:0.15em;\"><span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>&#x7684;&#x7ED3;&#x679C;&#x76F8;&#x52A0;&#xFF09;&#x5F97;&#x5230;&#x4E8C;&#x7EF4;&#x5F20;&#x91CF;&#x3002;<\/p>\n<h2 class=\"mume-header\" id=\"%E5%A4%9A%E8%BE%93%E5%87%BA%E9%80%9A%E9%81%93\">&#x591A;&#x8F93;&#x51FA;&#x901A;&#x9053;<\/h2>\n\n<p>&#x7528;&#x5230;&#x4E86;<code>torch.stack<\/code>&#x51FD;&#x6570;<\/p>\n<p><span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>1<\/mn><mo>&#xD7;<\/mo><mn>1<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">1\\times1<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:0.7278em;vertical-align:-0.0833em;\"><\/span><span class=\"mord\">1<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">&#xD7;<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6444em;\"><\/span><span class=\"mord\">1<\/span><\/span><\/span><\/span>&#x5377;&#x79EF;&#x5C42;&#x901A;&#x5E38;&#x7528;&#x4E8E;&#x8C03;&#x6574;&#x7F51;&#x7EDC;&#x7684;&#x901A;&#x9053;&#x6570;&#x91CF;&#x548C;&#x63A7;&#x5236;&#x6A21;&#x578B;&#x590D;&#x6742;&#x6027;&#x3002;<\/p>\n<h1 class=\"mume-header\" id=\"%E6%B1%87%E8%81%9A%E5%B1%82\">&#x6C47;&#x805A;&#x5C42;<\/h1>\n\n<ul>\n<li>&#x6700;&#x5927;&#x6C47;&#x805A;&#x5C42;&#xFF08;maximum pooling&#xFF09;<\/li>\n<li>&#x5E73;&#x5747;&#x6C47;&#x805A;&#x5C42;&#xFF08;average pooling&#xFF09;<br>\n&#x2014;&#x2014;&#x53D6;&#x51B3;&#x4E8E;&#x5177;&#x4F53;&#x6C60;&#x5316;&#x8FD0;&#x7B97;&#x662F;&#x53D6;&#x6C47;&#x805A;&#x7A97;&#x53E3;&#x4E2D;&#x6240;&#x6709;&#x5143;&#x7D20;&#x7684;&#x6700;&#x5927;&#x503C;&#x8FD8;&#x662F;&#x5E73;&#x5747;&#x503C;<\/li>\n<\/ul>\n<h2 class=\"mume-header\" id=\"%E7%9B%AE%E7%9A%84\">&#x76EE;&#x7684;<\/h2>\n\n<ul>\n<li><strong>&#x964D;&#x4F4E;&#x5377;&#x79EF;&#x5C42;&#x5BF9;&#x4F4D;&#x7F6E;&#x7684;&#x654F;&#x611F;&#x6027;<\/strong><\/li>\n<li><strong>&#x964D;&#x4F4E;&#x5BF9;&#x7A7A;&#x95F4;&#x964D;&#x91C7;&#x6837;&#x8868;&#x793A;&#x7684;&#x654F;&#x611F;&#x6027;<\/strong><\/li>\n<li>&#x4F8B;&#x5982;&#x4F7F;&#x7528;<span class=\"katex\"><span class=\"katex-mathml\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mn>2<\/mn><mo>&#xD7;<\/mo><mn>2<\/mn><\/mrow><annotation encoding=\"application\/x-tex\">2\\times 2<\/annotation><\/semantics><\/math><\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"strut\" style=\"height:0.7278em;vertical-align:-0.0833em;\"><\/span><span class=\"mord\">2<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><span class=\"mbin\">&#xD7;<\/span><span class=\"mspace\" style=\"margin-right:0.2222em;\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height:0.6444em;\"><\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span>&#x6700;&#x5927;&#x6C47;&#x805A;&#x5C42;&#xFF0C;&#x5373;&#x4F7F;&#x5728;&#x9AD8;&#x5EA6;&#x6216;&#x5BBD;&#x5EA6;&#x4E0A;&#x79FB;&#x52A8;&#x4E00;&#x4E2A;&#x5143;&#x7D20;&#xFF0C;&#x5377;&#x79EF;&#x5C42;&#x4ECD;&#x7136;&#x53EF;&#x4EE5;&#x8BC6;&#x522B;&#x5230;&#x6A21;&#x5F0F;&#x3002;<\/li>\n<\/ul>\n<h2 class=\"mume-header\" id=\"%E5%AE%9E%E7%8E%B0\">&#x5B9E;&#x73B0;<\/h2>\n\n<pre data-role=\"codeBlock\" data-info=\"python\" class=\"language-python\">pool2d <span class=\"token operator\">=<\/span> nn<span class=\"token punctuation\">.<\/span>MaxPool2d<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> stride<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n<\/pre><h1 class=\"mume-header\" id=\"lenet\">LeNet<\/h1>\n\n<h2 class=\"mume-header\" id=\"%E7%BB%84%E6%88%90\">&#x7EC4;&#x6210;<\/h2>\n\n<ul>\n<li>&#x5377;&#x79EF;&#x7F16;&#x7801;&#x5668;&#xFF1A;&#x4E24;&#x4E2A;&#x5377;&#x79EF;&#x5C42;<\/li>\n<li>&#x5168;&#x8FDE;&#x63A5;&#x5C42;&#x5BC6;&#x96C6;&#x5757;&#xFF1A;&#x4E09;&#x4E2A;&#x5168;&#x8FDE;&#x63A5;&#x5C42;<\/li>\n<\/ul>\n<pre data-role=\"codeBlock\" data-info=\"python\" class=\"language-python\"><span class=\"token comment\"># LeNet-5<\/span>\nnet <span class=\"token operator\">=<\/span> nn<span class=\"token punctuation\">.<\/span>Sequential<span class=\"token punctuation\">(<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Conv2d<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> kernel_size<span class=\"token operator\">=<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> padding<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Sigmoid<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>AvgPool2d<span class=\"token punctuation\">(<\/span>kernel_size<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> stride<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Conv2d<span class=\"token punctuation\">(<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span> kernel_size<span class=\"token operator\">=<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Sigmoid<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>AvgPool2d<span class=\"token punctuation\">(<\/span>kernel_size<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> stride<span class=\"token operator\">=<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Flatten<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Linear<span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">5<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">120<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Sigmoid<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Linear<span class=\"token punctuation\">(<\/span><span class=\"token number\">120<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">84<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Sigmoid<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span>\n    nn<span class=\"token punctuation\">.<\/span>Linear<span class=\"token punctuation\">(<\/span><span class=\"token number\">84<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">)<\/span>\n<\/pre>\n      <\/div>\n      \n      \n    \n    \n  \n","protected":false},"excerpt":{"rendered":"<p>\u300a\u52a8\u624b\u5b66\u6df1\u5ea6\u5b66\u4e60\u300b \u2014 \u52a8\u624b\u5b66\u6df1\u5ea6\u5b66\u4e60 2.0.0-beta0 documentation (d2l.ai)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[31,20],"tags":[32,33,26,25],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts\/343"}],"collection":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=343"}],"version-history":[{"count":1,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts\/343\/revisions"}],"predecessor-version":[{"id":344,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts\/343\/revisions\/344"}],"wp:attachment":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}