{"id":4449,"date":"2024-03-14T13:06:47","date_gmt":"2024-03-14T04:06:47","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/pytorch%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%aa%e3%82%ab%e3%83%ac%e3%83%b3%e3%83%88%e3%83%8b%e3%83%a5%e3%83%bc%e3%83%a9%e3%83%ab%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%81%ae\/"},"modified":"2025-08-02T21:20:09","modified_gmt":"2025-08-02T12:20:09","slug":"pytorch%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%aa%e3%82%ab%e3%83%ac%e3%83%b3%e3%83%88%e3%83%8b%e3%83%a5%e3%83%bc%e3%83%a9%e3%83%ab%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%81%ae","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/pytorch%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8b%e3%83%aa%e3%82%ab%e3%83%ac%e3%83%b3%e3%83%88%e3%83%8b%e3%83%a5%e3%83%bc%e3%83%a9%e3%83%ab%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%81%ae\/","title":{"rendered":"PyTorch\u306b\u304a\u3051\u308b\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5b9f\u88c5\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>PyTorch\u3067\u306f\u3001\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08RNN\uff09\u306ftorch.nn.RNN\u3084torch.nn.LSTM\u306a\u3069\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3059\u3079\u3066torch.nn.Module\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u3066\u304a\u308a\u3001\u5185\u90e8\u3067RNN\u306e\u8a08\u7b97\u30d7\u30ed\u30bb\u30b9\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>PyTorch\u3067\u57fa\u672c\u7684\u306a\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> torch\r\n<span class=\"hljs-keyword\">import<\/span> torch.nn <span class=\"hljs-keyword\">as<\/span> nn\r\n\r\n<span class=\"hljs-comment\"># \u5b9a\u4e49RNN\u6a21\u578b<\/span>\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">RNN<\/span>(nn.Module):\r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">__init__<\/span>(<span class=\"hljs-params\">self, input_size, hidden_size, num_layers, output_size<\/span>):\r\n        <span class=\"hljs-built_in\">super<\/span>(RNN, self).__init__()\r\n        self.hidden_size = hidden_size\r\n        self.num_layers = num_layers\r\n        self.rnn = nn.RNN(input_size, hidden_size, num_layers, batch_first=<span class=\"hljs-literal\">True<\/span>)\r\n        self.fc = nn.Linear(hidden_size, output_size)\r\n        \r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">forward<\/span>(<span class=\"hljs-params\">self, x, h0<\/span>):\r\n        out, hn = self.rnn(x, h0)\r\n        out = self.fc(out[:, -<span class=\"hljs-number\">1<\/span>, :])  <span class=\"hljs-comment\"># \u53ea\u53d6\u6700\u540e\u4e00\u4e2a\u65f6\u95f4\u6b65\u7684\u8f93\u51fa\u4f5c\u4e3a\u9884\u6d4b\u7ed3\u679c<\/span>\r\n        <span class=\"hljs-keyword\">return<\/span> out\r\n\r\n<span class=\"hljs-comment\"># \u5b9a\u4e49\u8f93\u5165\u53c2\u6570<\/span>\r\ninput_size = <span class=\"hljs-number\">28<\/span>\r\nhidden_size = <span class=\"hljs-number\">128<\/span>\r\nnum_layers = <span class=\"hljs-number\">1<\/span>\r\noutput_size = <span class=\"hljs-number\">10<\/span>\r\n\r\n<span class=\"hljs-comment\"># \u521b\u5efa\u6a21\u578b\u5b9e\u4f8b<\/span>\r\nrnn = RNN(input_size, hidden_size, num_layers, output_size)\r\n\r\n<span class=\"hljs-comment\"># \u5b9a\u4e49\u8f93\u5165\u6570\u636e<\/span>\r\nx = torch.randn(<span class=\"hljs-number\">64<\/span>, <span class=\"hljs-number\">10<\/span>, <span class=\"hljs-number\">28<\/span>)  <span class=\"hljs-comment\"># (batch_size, sequence_length, input_size)<\/span>\r\nh0 = torch.zeros(num_layers, x.size(<span class=\"hljs-number\">0<\/span>), hidden_size)  <span class=\"hljs-comment\"># \u521d\u59cb\u9690\u85cf\u72b6\u6001<\/span>\r\n\r\n<span class=\"hljs-comment\"># \u524d\u5411\u4f20\u64ad<\/span>\r\noutput = rnn(x, h0)\r\n<span class=\"hljs-built_in\">print<\/span>(output.shape)  <span class=\"hljs-comment\"># \u8f93\u51fa\u7684\u5f62\u72b6\u4e3a(batch_size, output_size)<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u307e\u305aRNN\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u308c\u306fnn.Module\u3092\u7d99\u627f\u3057\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067RNN\u30e2\u30c7\u30eb\u306e\u5404\u30ec\u30a4\u30e4\u30fc\u3092\u521d\u671f\u5316\u3057\u307e\u3059\u3002\u6b21\u306b\u3001forward\u30e1\u30bd\u30c3\u30c9\u3067RNN\u306e\u9806\u4f1d\u64ad\u8a08\u7b97\u3092\u5b9f\u884c\u3057\u3001\u4e88\u6e2c\u7d50\u679c\u3068\u3057\u3066\u6700\u5f8c\u306e\u30bf\u30a4\u30e0\u30b9\u30c6\u30c3\u30d7\u306e\u51fa\u529b\u3092\u8fd4\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u30e2\u30c7\u30eb\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3001\u5165\u529b\u30c7\u30fc\u30bf\u3092\u5b9a\u7fa9\u3057\u3001\u9806\u4f1d\u64ad\u8a08\u7b97\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<p>PyTorch\u306b\u306f\u3001nn.LSTM\u3084nn.GRU\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u30bf\u30a4\u30d7\u306e\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u3002\u958b\u767a\u8005\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u9078\u629e\u3057\u3066\u3001\u81ea\u5206\u81ea\u8eab\u306e\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30e2\u30c7\u30eb\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PyTorch\u3067\u306f\u3001\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08RNN\uff09\u306ftorch.nn.RNN\u3084torch.nn.LSTM\u306a\u3069\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3059\u3079\u3066torch.nn.Modul [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-4449","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PyTorch\u306b\u304a\u3051\u308b\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5b9f\u88c5\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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