{"id":4432,"date":"2024-03-14T13:04:25","date_gmt":"2024-03-14T04:04:25","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/pytorch%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%99%82%e9%96%93%e3%81%ae%e4%ba%88%e6%b8%ac%e3%82%84%e3%82%b7%e3%83%bc%e3%82%b1%e3%83%b3%e3%82%b9%e3%81%ae%e7%94%9f%e6%88%90%e3%82%92\/"},"modified":"2025-08-02T21:12:59","modified_gmt":"2025-08-02T12:12:59","slug":"pytorch%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%99%82%e9%96%93%e3%81%ae%e4%ba%88%e6%b8%ac%e3%82%84%e3%82%b7%e3%83%bc%e3%82%b1%e3%83%b3%e3%82%b9%e3%81%ae%e7%94%9f%e6%88%90%e3%82%92","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/pytorch%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e3%80%81%e6%99%82%e9%96%93%e3%81%ae%e4%ba%88%e6%b8%ac%e3%82%84%e3%82%b7%e3%83%bc%e3%82%b1%e3%83%b3%e3%82%b9%e3%81%ae%e7%94%9f%e6%88%90%e3%82%92\/","title":{"rendered":"PyTorch\u3092\u4f7f\u7528\u3057\u3066\u3001\u6642\u9593\u306e\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u751f\u6210\u3092\u884c\u3046\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\u3002"},"content":{"rendered":"<p>PyTorch\u3092\u4f7f\u7528\u3057\u3066\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u751f\u6210\u3092\u884c\u3046\u5834\u5408\u3001\u901a\u5e38\u306f\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08RNN\uff09\u3084\u9577\u30fb\u77ed\u671f\u8a18\u61b6\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08LSTM\uff09\u30e2\u30c7\u30eb\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306fPyTorch\u3092\u4f7f\u7528\u3057\u3066\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u751f\u6210\u3092\u884c\u3046\u57fa\u672c\u7684\u306a\u4f8b\u3067\u3059\u3002<\/p>\n<ol>\n<li>PyTorch\u3068\u95a2\u9023\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b:<\/li>\n<\/ol>\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<span class=\"hljs-keyword\">import<\/span> torch.optim <span class=\"hljs-keyword\">as<\/span> optim\r\n<span class=\"hljs-keyword\">import<\/span> numpy <span class=\"hljs-keyword\">as<\/span> np\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u3092\u6e96\u5099\u3059\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\"># \u51c6\u5907\u8f93\u5165\u5e8f\u5217<\/span>\r\ninput_sequence = np.array([<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>, <span class=\"hljs-number\">6<\/span>, <span class=\"hljs-number\">7<\/span>, <span class=\"hljs-number\">8<\/span>, <span class=\"hljs-number\">9<\/span>, <span class=\"hljs-number\">10<\/span>])\r\n<span class=\"hljs-comment\"># \u51c6\u5907\u8f93\u51fa\u5e8f\u5217<\/span>\r\noutput_sequence = np.array([<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">6<\/span>, <span class=\"hljs-number\">8<\/span>, <span class=\"hljs-number\">10<\/span>, <span class=\"hljs-number\">12<\/span>, <span class=\"hljs-number\">14<\/span>, <span class=\"hljs-number\">16<\/span>, <span class=\"hljs-number\">18<\/span>, <span class=\"hljs-number\">20<\/span>])\r\n\r\n<span class=\"hljs-comment\"># \u8f6c\u6362\u6570\u636e\u4e3aPyTorch\u5f20\u91cf<\/span>\r\ninput_sequence = torch.from_numpy(input_sequence).<span class=\"hljs-built_in\">float<\/span>()\r\noutput_sequence = torch.from_numpy(output_sequence).<span class=\"hljs-built_in\">float<\/span>()\r\n<\/code><\/pre>\n<ol>\n<li>RNN\u30e2\u30c7\u30eb\u3092\u5b9a\u7fa9\u3059\u308b:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><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, 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.rnn = nn.RNN(input_size, hidden_size, 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<\/span>):\r\n        out, _ = self.rnn(x.unsqueeze(<span class=\"hljs-number\">0<\/span>).unsqueeze(<span class=\"hljs-number\">2<\/span>))\r\n        out = self.fc(out)\r\n        <span class=\"hljs-keyword\">return<\/span> out\r\n<\/code><\/pre>\n<ol>\n<li>\u30e2\u30c7\u30eb\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3001\u640d\u5931\u95a2\u6570\u306e\u5b9a\u7fa9\u3001\u304a\u3088\u3073\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306e\u8a2d\u5b9a\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\"># \u5b9a\u4e49\u6a21\u578b<\/span>\r\nmodel = RNN(<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">128<\/span>, <span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-comment\"># \u5b9a\u4e49\u635f\u5931\u51fd\u6570<\/span>\r\ncriterion = nn.MSELoss()\r\n<span class=\"hljs-comment\"># \u5b9a\u4e49\u4f18\u5316\u5668<\/span>\r\noptimizer = optim.Adam(model.parameters(), lr=<span class=\"hljs-number\">0.001<\/span>)\r\n<\/code><\/pre>\n<ol>\n<li>\u30e2\u30c7\u30eb\u306e\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\"># \u8bad\u7ec3\u6a21\u578b<\/span>\r\nnum_epochs = <span class=\"hljs-number\">1000<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> epoch <span class=\"hljs-keyword\">in<\/span> <span class=\"hljs-built_in\">range<\/span>(num_epochs):\r\n    optimizer.zero_grad()\r\n    output = model(input_sequence)\r\n    loss = criterion(output.squeeze(), output_sequence.unsqueeze(<span class=\"hljs-number\">0<\/span>))\r\n    loss.backward()\r\n    optimizer.step()\r\n    \r\n    <span class=\"hljs-keyword\">if<\/span> epoch % <span class=\"hljs-number\">100<\/span> == <span class=\"hljs-number\">0<\/span>:\r\n        <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">f'Epoch <span class=\"hljs-subst\">{epoch+<span class=\"hljs-number\">1<\/span>}<\/span>, Loss: <span class=\"hljs-subst\">{loss.item()}<\/span>'<\/span>)\r\n<\/code><\/pre>\n<ol>\n<li>\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u751f\u6210\u3092\u884c\u3046\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\"># \u8fdb\u884c\u65f6\u5e8f\u9884\u6d4b<\/span>\r\ninput_sequence_test = torch.tensor([<span class=\"hljs-number\">11<\/span>]).<span class=\"hljs-built_in\">float<\/span>()\r\npredicted_output = model(input_sequence_test)\r\n\r\n<span class=\"hljs-comment\"># \u8fdb\u884c\u5e8f\u5217\u751f\u6210<\/span>\r\ngenerated_sequence = []\r\ninput_sequence_gen = torch.tensor([<span class=\"hljs-number\">11<\/span>]).<span class=\"hljs-built_in\">float<\/span>()\r\n<span class=\"hljs-keyword\">for<\/span> i <span class=\"hljs-keyword\">in<\/span> <span class=\"hljs-built_in\">range<\/span>(<span class=\"hljs-number\">10<\/span>):\r\n    output = model(input_sequence_gen)\r\n    generated_sequence.append(output.item())\r\n    input_sequence_gen = output.detach()\r\n\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"Predicted output: \"<\/span>, predicted_output.item())\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"Generated sequence: \"<\/span>, generated_sequence)\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u306e\u4f8b\u306f\u3001PyTorch\u3092\u4f7f\u7528\u3057\u3066\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u751f\u6210\u3092\u884c\u3046\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u554f\u984c\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3084\u6700\u9069\u5316\u304c\u5fc5\u8981\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PyTorch\u3092\u4f7f\u7528\u3057\u3066\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u751f\u6210\u3092\u884c\u3046\u5834\u5408\u3001\u901a\u5e38\u306f\u30ea\u30ab\u30ec\u30f3\u30c8\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08RNN\uff09\u3084\u9577\u30fb\u77ed\u671f\u8a18\u61b6\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08LSTM\uff09\u30e2\u30c7\u30eb\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306fPyTorch\u3092\u4f7f\u7528\u3057\u3066\u6642\u7cfb\u5217\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-4432","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\u3092\u4f7f\u7528\u3057\u3066\u3001\u6642\u9593\u306e\u4e88\u6e2c\u3084\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u751f\u6210\u3092\u884c\u3046\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\u3002 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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