{"id":3039,"date":"2024-03-13T18:09:59","date_gmt":"2024-03-13T09:09:59","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/keras%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e7%94%bb%e5%83%8f%e5%88%86%e9%a1%9e%e3%82%bf%e3%82%b9%e3%82%af%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/"},"modified":"2025-08-02T11:10:07","modified_gmt":"2025-08-02T02:10:07","slug":"keras%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e7%94%bb%e5%83%8f%e5%88%86%e9%a1%9e%e3%82%bf%e3%82%b9%e3%82%af%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/keras%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6%e7%94%bb%e5%83%8f%e5%88%86%e9%a1%9e%e3%82%bf%e3%82%b9%e3%82%af%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/","title":{"rendered":"Keras\u3092\u4f7f\u7528\u3057\u3066\u753b\u50cf\u5206\u985e\u30bf\u30b9\u30af\u3092\u884c\u3046\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Keras\u3092\u4f7f\u7528\u3057\u3066\u753b\u50cf\u5206\u985e\u30bf\u30b9\u30af\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u6e96\u5099\uff1a\u6700\u521d\u306b\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3084\u30c6\u30b9\u30c8\u306b\u4f7f\u7528\u3059\u308b\u753b\u50cf\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u6e96\u5099\u3057\u307e\u3059\u3002Keras\u306e\u7d44\u307f\u8fbc\u307f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u72ec\u81ea\u306b\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f5c\u6210\u3059\u308b\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u306e\u524d\u51e6\u7406\uff1a\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u524d\u51e6\u7406\u3092\u884c\u3044\u3001\u30b5\u30a4\u30ba\u306e\u8abf\u6574\u3001\u6a19\u6e96\u5316\u3001\u5f37\u5316\u306a\u3069\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n<li>\u30e2\u30c7\u30eb\u69cb\u7bc9\uff1aKeras\u3092\u4f7f\u7528\u3057\u3066\u7573\u307f\u8fbc\u307f\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08CNN\uff09\u30e2\u30c7\u30eb\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002 Keras\u304c\u63d0\u4f9b\u3059\u308b\u4e8b\u524d\u5b66\u7fd2\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u72ec\u81ea\u306b\u30e2\u30c7\u30eb\u69cb\u9020\u3092\u8a2d\u8a08\u3059\u308b\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30e2\u30c7\u30eb\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\uff1a\u30e2\u30c7\u30eb\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3001\u640d\u5931\u95a2\u6570\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u3001\u8a55\u4fa1\u6307\u6a19\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30e2\u30c7\u30eb\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\uff1a\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30e2\u30c7\u30eb\u3092\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3057\u307e\u3059\u3002<\/li>\n<li>\u30e2\u30c7\u30eb\u306e\u8a55\u4fa1\uff1a\u30e2\u30c7\u30eb\u3092\u30c6\u30b9\u30c8\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u8a55\u4fa1\u3059\u308b\u3002<\/li>\n<li>\u65b0\u3057\u3044\u753b\u50cf\u306b\u3064\u3044\u3066\u306e\u4e88\u6e2c\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u8a13\u7df4\u6e08\u307f\u306e\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3057\u3066\u5206\u985e\u4e88\u6e2c\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u306f\u3001Keras\u3092\u4f7f\u7528\u3057\u3066\u753b\u50cf\u5206\u985e\u30bf\u30b9\u30af\u3092\u884c\u3046\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> numpy <span class=\"hljs-keyword\">as<\/span> np\r\n<span class=\"hljs-keyword\">import<\/span> keras\r\n<span class=\"hljs-keyword\">from<\/span> keras.datasets <span class=\"hljs-keyword\">import<\/span> cifar10\r\n<span class=\"hljs-keyword\">from<\/span> keras.models <span class=\"hljs-keyword\">import<\/span> Sequential\r\n<span class=\"hljs-keyword\">from<\/span> keras.layers <span class=\"hljs-keyword\">import<\/span> Conv2D, MaxPooling2D, Flatten, Dense\r\n\r\n<span class=\"hljs-comment\"># \u51c6\u5907\u6570\u636e\u96c6<\/span>\r\n(x_train, y_train), (x_test, y_test) = cifar10.load_data()\r\n\r\n<span class=\"hljs-comment\"># \u6570\u636e\u9884\u5904\u7406<\/span>\r\nx_train = x_train.astype(<span class=\"hljs-string\">'float32'<\/span>) \/ <span class=\"hljs-number\">255<\/span>\r\nx_test = x_test.astype(<span class=\"hljs-string\">'float32'<\/span>) \/ <span class=\"hljs-number\">255<\/span>\r\ny_train = keras.utils.to_categorical(y_train, <span class=\"hljs-number\">10<\/span>)\r\ny_test = keras.utils.to_categorical(y_test, <span class=\"hljs-number\">10<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u6784\u5efa\u6a21\u578b<\/span>\r\nmodel = Sequential()\r\nmodel.add(Conv2D(<span class=\"hljs-number\">32<\/span>, (<span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">3<\/span>), activation=<span class=\"hljs-string\">'relu'<\/span>, input_shape=(<span class=\"hljs-number\">32<\/span>, <span class=\"hljs-number\">32<\/span>, <span class=\"hljs-number\">3<\/span>)))\r\nmodel.add(MaxPooling2D((<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">2<\/span>)))\r\nmodel.add(Conv2D(<span class=\"hljs-number\">64<\/span>, (<span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">3<\/span>), activation=<span class=\"hljs-string\">'relu'<\/span>))\r\nmodel.add(MaxPooling2D((<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">2<\/span>)))\r\nmodel.add(Conv2D(<span class=\"hljs-number\">64<\/span>, (<span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">3<\/span>), activation=<span class=\"hljs-string\">'relu'<\/span>))\r\nmodel.add(Flatten())\r\nmodel.add(Dense(<span class=\"hljs-number\">64<\/span>, activation=<span class=\"hljs-string\">'relu'<\/span>))\r\nmodel.add(Dense(<span class=\"hljs-number\">10<\/span>, activation=<span class=\"hljs-string\">'softmax'<\/span>))\r\n\r\n<span class=\"hljs-comment\"># \u7f16\u8bd1\u6a21\u578b<\/span>\r\nmodel.<span class=\"hljs-built_in\">compile<\/span>(optimizer=<span class=\"hljs-string\">'adam'<\/span>, loss=<span class=\"hljs-string\">'categorical_crossentropy'<\/span>, metrics=[<span class=\"hljs-string\">'accuracy'<\/span>])\r\n\r\n<span class=\"hljs-comment\"># \u8bad\u7ec3\u6a21\u578b<\/span>\r\nmodel.fit(x_train, y_train, epochs=<span class=\"hljs-number\">10<\/span>, batch_size=<span class=\"hljs-number\">64<\/span>, validation_data=(x_test, y_test))\r\n\r\n<span class=\"hljs-comment\"># \u8bc4\u4f30\u6a21\u578b<\/span>\r\nloss, accuracy = model.evaluate(x_test, y_test)\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">'Test accuracy:'<\/span>, accuracy)\r\n\r\n<span class=\"hljs-comment\"># \u8fdb\u884c\u9884\u6d4b<\/span>\r\npredictions = model.predict(x_test)\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3089\u306e\u624b\u9806\u306b\u5f93\u3063\u3066\u3001Keras\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306a\u753b\u50cf\u5206\u985e\u30e2\u30c7\u30eb\u3092\u69cb\u7bc9\u3057\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u5206\u985e\u4e88\u6e2c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30bf\u30b9\u30af\u306e\u8907\u96d1\u3055\u3084\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u3001\u30e2\u30c7\u30eb\u3092\u3055\u3089\u306b\u6700\u9069\u5316\u304a\u3088\u3073\u8abf\u6574\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Keras\u3092\u4f7f\u7528\u3057\u3066\u753b\u50cf\u5206\u985e\u30bf\u30b9\u30af\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u6e96\u5099\uff1a\u6700\u521d\u306b\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3084\u30c6\u30b9\u30c8\u306b\u4f7f\u7528\u3059\u308b\u753b\u50cf\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u6e96\u5099\u3057\u307e\u3059\u3002Keras\u306e\u7d44\u307f\u8fbc\u307f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u72ec\u81ea [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-3039","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\/ 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