{"id":10078,"date":"2026-10-07T16:34:50","date_gmt":"2026-10-07T07:34:50","guid":{"rendered":"https:\/\/since2020.jp\/media\/?p=10078"},"modified":"2026-10-07T16:34:50","modified_gmt":"2026-10-07T07:34:50","slug":"label-noise-model-robustness","status":"publish","type":"post","link":"https:\/\/since2020.jp\/media\/label-noise-model-robustness\/","title":{"rendered":"\u6b63\u89e3\u30e9\u30d9\u30eb\u304c\u307e\u3061\u304c\u3063\u3066\u3044\u308b\u3068\u3001\u30e2\u30c7\u30eb\u306f\u3069\u3053\u307e\u3067\u8010\u3048\u3089\u308c\u308b\u304b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p><strong>\u76ee\u7684\u3068\u80cc\u666f<\/strong><\/p>\n\n\n\n<p>\u6a5f\u68b0\u5b66\u7fd2\u3067\u306f\u300c\u6b63\u89e3\u30e9\u30d9\u30eb\u306f\u6b63\u3057\u3044\u300d\u3068\u3044\u3046\u524d\u63d0\u3067\u30e2\u30c7\u30eb\u3092\u5b66\u7fd2\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3067\u306f\u3001\u3053\u306e\u524d\u63d0\u304c\u5d29\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4eba\u304c\u624b\u4f5c\u696d\u3067\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u3066\u3044\u3066\u3001\u62c5\u5f53\u8005\u3054\u3068\u306b\u5224\u65ad\u304c\u30d6\u30ec\u308b<\/li>\n\n\n\n<li>\u30ed\u30b0\u3084\u7533\u544a\u304b\u3089\u81ea\u52d5\u3067\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u3066\u3044\u3066\u3001\u8aa4\u308a\u304c\u6df7\u3056\u308b<\/li>\n\n\n\n<li>\u5883\u754c\u7dda\u4e0a\u306e\u4e8b\u4f8b\u3067\u3001\u5c02\u9580\u5bb6\u3067\u3082\u610f\u898b\u304c\u5272\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u30e9\u30d9\u30eb\u306e\u4f55\uff05\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u3068\u3001\u7cbe\u5ea6\u306f\u5d29\u308c\u59cb\u3081\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u307e\u305f\u3001\u8a13\u7df4\u30c7\u30fc\u30bf\u3092\u4e38\u6697\u8a18\u3057\u3084\u3059\u3044\u30e2\u30c7\u30eb\u307b\u3069\u3001\u9593\u9055\u3063\u305f\u30e9\u30d9\u30eb\u306b\u5f15\u304d\u305a\u3089\u308c\u3066\u5f31\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u4f53\u611f\u3067\u306f\u306a\u304f\u6570\u5b57\u3067\u78ba\u304b\u3081\u305f\u304f\u3001\u5b9f\u9a13\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p><strong>\u8a66\u3057\u305f\u3053\u3068\u306e\u6982\u8981<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u6b63\u89e3\u30e9\u30d9\u30eb\u3092\u3001\u4e00\u5b9a\u306e\u5272\u5408\u3067\u308f\u3056\u3068\u53cd\u8ee2\u3055\u305b\u308b<\/li>\n\n\n\n<li>\u30ce\u30a4\u30ba\u7387\u306f0\u30015\u300110\u300120\u300130\u300140\uff05\u306e6\u901a\u308a<\/li>\n\n\n\n<li>\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u3001RandomForest\u3001KNN\u306e3\u30e2\u30c7\u30eb\u3067\u3001\u304d\u308c\u3044\u306a\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u7cbe\u5ea6\u3092\u6bd4\u3079\u308b<\/li>\n\n\n\n<li>\u4e71\u6570\u3092\u5909\u3048\u306620\u56de\u305a\u3064\u56de\u3057\u3001\u5e73\u5747\u3092\u3068\u308b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u74b0\u5883\u8a2d\u5b9a<\/h2>\n\n\n\n<p><strong>\u4f7f\u7528\u3057\u305f\u30c4\u30fc\u30eb\u3068\u30d0\u30fc\u30b8\u30e7\u30f3<\/strong><\/p>\n\n\n\n<p>Google Colab\u4e0a\u3067\u3001Python\u3068scikit-learn\u3060\u3051\u3067\u52d5\u304b\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u306fscikit-learn\u4ed8\u5c5e\u306ebreast_cancer(569\u4ef6\u300130\u7279\u5fb4\u91cf\u306e\u4e8c\u5024\u5206\u985e)\u3067\u3001\u8ffd\u52a0\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306f\u8981\u308a\u307e\u305b\u3093\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u6b21\u306e\u30b3\u30fc\u30c9\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import sklearn, numpy, pandas\nprint(sklearn.__version__, numpy.__version__, pandas.__version__)<\/code><\/pre>\n\n\n\n<p><strong>\u521d\u671f\u8a2d\u5b9a\u3068\u6e96\u5099<\/strong><\/p>\n\n\n\n<p>\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u307f\u30ce\u30a4\u30ba\u7387\u3068\u7e70\u308a\u8fd4\u3057\u56de\u6570\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\nimport pandas as pd\nimport matplotlib.pyplot as plt\nfrom sklearn.datasets import load_breast_cancer\nfrom sklearn.model_selection import train_test_split\nfrom sklearn.ensemble import RandomForestClassifier\nfrom sklearn.linear_model import LogisticRegression\nfrom sklearn.neighbors import KNeighborsClassifier\nfrom sklearn.pipeline import make_pipeline\nfrom sklearn.preprocessing import StandardScaler\n\nNOISE_RATES = &#091;0, 0.05, 0.10, 0.20, 0.30, 0.40]\nN_SEEDS = 20<\/code><\/pre>\n\n\n\n<p><strong>\u5b9f\u9a13\u306e\u8a2d\u8a08\u3067\u6c7a\u3081\u305f\u3053\u3068<\/strong><\/p>\n\n\n\n<p>\u30b3\u30fc\u30c9\u306b\u5165\u308b\u524d\u306b\u3001\u7d50\u679c\u306e\u8aad\u307f\u65b9\u306b\u95a2\u308f\u308b\u8a2d\u8a08\u30923\u3064\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ce\u30a4\u30ba\u306f\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u30e9\u30d9\u30eb\u3060\u3051\u5165\u308c\u308b\u3002<br>\u2192\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u307e\u3067\u9593\u9055\u3048\u308b\u3068\u3001\u300c\u30e2\u30c7\u30eb\u304c\u5916\u3057\u305f\u300d\u306e\u304b\u300c\u6b63\u89e3\u306e\u65b9\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u306e\u304b\u300d\u306e\u533a\u5225\u304c\u3067\u304d\u306a\u304f\u306a\u308b\u305f\u3081\u3067\u3059\u3002\u77e5\u308a\u305f\u3044\u306e\u306f\u3001\u6c5a\u308c\u305f\u30e9\u30d9\u30eb\u3067\u5b66\u7fd2\u3057\u305f\u30e2\u30c7\u30eb\u304c\u3001\u672c\u5f53\u306e\u6b63\u89e3\u306b\u3069\u308c\u3060\u3051\u8fd1\u3044\u304b\u3067\u3059\u3002<\/li>\n\n\n\n<li>20\u56de\u7e70\u308a\u8fd4\u3057\u3066\u5e73\u5747\u3092\u3068\u308b\u3002<br>\u2192\u30c7\u30fc\u30bf\u304c569\u4ef6\u3068\u5c0f\u3055\u304f\u3001\u30c6\u30b9\u30c8\u306b\u5165\u308b171\u4ef6\u306e\u9854\u3076\u308c\u3067\u7cbe\u5ea6\u304c1\u30dd\u30a4\u30f3\u30c8\u7a0b\u5ea6\u30d6\u30ec\u307e\u3059\u30021\u56de\u3060\u3051\u306e\u7d50\u679c\u3060\u3068\u3001\u30e2\u30c7\u30eb\u306e\u9593\u306e\u5dee\u304c\u5076\u7136\u304b\u3069\u3046\u304b\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u30ce\u30a4\u30ba\u306f\u5b8c\u5168\u306b\u30e9\u30f3\u30c0\u30e0\u306b\u3059\u308b\u3002<br>\u2192\u3069\u306e\u884c\u304c\u9593\u9055\u3046\u304b\u306b\u504f\u308a\u304c\u306a\u3044\u3001\u6700\u3082\u5358\u7d14\u306a\u6761\u4ef6\u306b\u3057\u307e\u3057\u305f\u3002\u504f\u308a\u306e\u3042\u308b\u30ce\u30a4\u30ba\u306f\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306f\u6271\u3044\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u88c5\u624b\u9806<\/h2>\n\n\n\n<p><strong>\u30b9\u30c6\u30c3\u30d7\uff11\uff1a\u30e9\u30d9\u30eb\u3092\u53cd\u8ee2\u3055\u305b\u308b\u95a2\u6570<\/strong><\/p>\n\n\n\n<p>\u4e8c\u5024\u30e9\u30d9\u30eb\u306a\u306e\u3067\u3001\u9078\u3093\u3060\u884c\u306e0\u30681\u3092\u5165\u308c\u66ff\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>def flip_labels(y, rate, rng):\n    y_noisy = y.copy()\n    n_flip = int(round(len(y) * rate))\n    idx = rng.choice(len(y), size=n_flip, replace=False)\n    y_noisy&#091;idx] = 1 - y_noisy&#091;idx]\n    return y_noisy<\/code><\/pre>\n\n\n\n<p><strong>\u30b9\u30c6\u30c3\u30d7\uff12\uff1a\u30e2\u30c7\u30eb\u306e\u6e96\u5099<\/strong><\/p>\n\n\n\n<p>\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u3068KNN\u306f\u3001\u7279\u5fb4\u91cf\u306e\u30b9\u30b1\u30fc\u30eb\u306b\u5f71\u97ff\u3055\u308c\u308b\u305f\u3081\u3001\u6a19\u6e96\u5316\u3092\u631f\u307f\u307e\u3059\u3002RandomForest\u306f\u3001\u30b9\u30b1\u30fc\u30eb\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u306e\u3067\u6a19\u6e96\u5316\u306a\u3057\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>def make_models():\n    return {\n        \"LogisticRegression\": make_pipeline(StandardScaler(), LogisticRegression(max_iter=2000)),\n        \"RandomForest\": RandomForestClassifier(n_estimators=200, random_state=0, n_jobs=-1),\n        \"KNN (k=5)\": make_pipeline(StandardScaler(), KNeighborsClassifier(n_neighbors=5)),\n    }<\/code><\/pre>\n\n\n\n<p><strong>\u30b9\u30c6\u30c3\u30d7\uff13\uff1a\u5b9f\u9a13\u306e\u30eb\u30fc\u30d7<\/strong><\/p>\n\n\n\n<p>\u30ce\u30a4\u30ba\u7387\u3001\u30e2\u30c7\u30eb\u3001\u4e71\u6570\u306e\u7d44\u307f\u5408\u308f\u305b\u3054\u3068\u306b\u3001\u6b21\u306e3\u3064\u3092\u8a18\u9332\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>test_acc\uff1a\u304d\u308c\u3044\u306a\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u306e\u7cbe\u5ea6<\/li>\n\n\n\n<li>train_acc_noisy\uff1a\u30ce\u30a4\u30ba\u5165\u308a\u306e\u8a13\u7df4\u30e9\u30d9\u30eb\u306b\u5bfe\u3059\u308b\u8a13\u7df4\u7cbe\u5ea6<\/li>\n\n\n\n<li>train_acc_true\uff1a\u672c\u6765\u306e\u6b63\u3057\u3044\u8a13\u7df4\u30e9\u30d9\u30eb\u306b\u5bfe\u3059\u308b\u8a13\u7df4\u7cbe\u5ea6<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>X, y = load_breast_cancer(return_X_y=True)\nrecords = &#091;]\n\nfor seed in range(N_SEEDS):\n    rng = np.random.default_rng(seed)\n    Xtr, Xte, ytr, yte = train_test_split(\n        X, y, test_size=0.3, random_state=seed, stratify=y\n    )\n    for rate in NOISE_RATES:\n        ytr_noisy = flip_labels(ytr, rate, rng)\n        for name, model in make_models().items():\n            model.fit(Xtr, ytr_noisy)\n            records.append({\n                \"noise\": rate, \"model\": name,\n                \"test_acc\": model.score(Xte, yte),\n                \"train_acc_noisy\": model.score(Xtr, ytr_noisy),\n                \"train_acc_true\": model.score(Xtr, ytr),\n            })\n\ndf = pd.DataFrame(records)<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d50\u679c<\/h2>\n\n\n\n<p><strong>10%\u307e\u3067\u306f\u3069\u306e\u30e2\u30c7\u30eb\u3082\u307b\u307c\u8010\u3048\u308b<\/strong><\/p>\n\n\n\n<p>\u30c6\u30b9\u30c8\u7cbe\u5ea6(20\u56de\u306e\u5e73\u5747)\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u30ce\u30a4\u30ba\u7387<\/td><td>Logistic Regression<\/td><td>Random Forest<\/td><td>KNN (k=5)<\/td><\/tr><tr><td>0%<\/td><td>97.4%<\/td><td>96.0%<\/td><td>96.5%<\/td><\/tr><tr><td>5%<\/td><td>96.0%<\/td><td>96.0%<\/td><td>96.1%<\/td><\/tr><tr><td>10%<\/td><td>94.7%<\/td><td>95.2%<\/td><td>95.2%<\/td><\/tr><tr><td>20%<\/td><td>92.8%<\/td><td>93.9%<\/td><td>90.4%<\/td><\/tr><tr><td>30%<\/td><td>89.0%<\/td><td>88.9%<\/td><td>79.8%<\/td><\/tr><tr><td>40%<\/td><td>75.9%<\/td><td>74.8%<\/td><td>64.5%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy-1024x640.png\" alt=\"\" class=\"wp-image-10079\" srcset=\"https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy-1024x640.png 1024w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy-300x188.png 300w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy-768x480.png 768w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy-1536x960.png 1536w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig1_test_accuracy.png 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u30ce\u30a4\u30ba0%\u304b\u308910%\u307e\u3067\u306e\u4f4e\u4e0b\u306f\u3001\u3069\u306e\u30e2\u30c7\u30eb\u30821~3\u30dd\u30a4\u30f3\u30c8\u7a0b\u5ea6\u3067\u3057\u305f\u300210\u4ef6\u306b1\u4ef6\u306e\u30e9\u30d9\u30eb\u304c\u9593\u9055\u3063\u3066\u3044\u3066\u3082\u3001\u7cbe\u5ea6\u306f\u6570\u30dd\u30a4\u30f3\u30c8\u3057\u304b\u4e0b\u304c\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u7bc4\u56f2\u306e\u30ce\u30a4\u30ba\u306a\u3089\u3001\u30e9\u30d9\u30eb\u306e\u4fee\u6b63\u306b\u5927\u304d\u306a\u624b\u9593\u3092\u304b\u3051\u308b\u524d\u306b\u3002\u4ed6\u306e\u6539\u5584\u3092\u512a\u5148\u3057\u3066\u3082\u826f\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8868\u306f\u3001\u30e2\u30c7\u30eb\u3054\u3068\u306b0%\u306e\u6642\u70b9\u306e\u7cbe\u5ea6\u304c\u9055\u3046\u70b9\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u30020%\u3067\u306f\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u304c\u6700\u3082\u9ad8\u3044\u305f\u3081\u3001\u300c\u4e0b\u304c\u308a\u5e45\u300d\u3067\u6bd4\u3079\u308b\u3068\u3001\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u304c\u4e0d\u5229\u306b\u898b\u3048\u307e\u3059\u3002\u4ee5\u964d\u306f\u3001\u7cbe\u5ea6\u306e\u7d76\u5bfe\u5024\u3068\u4e0b\u304c\u308a\u5e45\u306e\u4e21\u65b9\u3092\u898b\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u8010\u3048\u305f\u4f8b\uff1a20\uff05\u3067\u3082\u3001RandomForest\u306f\u7d042\u30dd\u30a4\u30f3\u30c8\u306e\u4f4e\u4e0b<\/strong><\/p>\n\n\n\n<p>\u30ce\u30a4\u30ba20%\u3067\u3001RandomForest\u306e\u4f4e\u4e0b\u306f\u7d042\u30dd\u30a4\u30f3\u30c8\u3067\u3057\u305f\u3002\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u306f\u7d045\u30dd\u30a4\u30f3\u30c8\u3001KNN\u306f\u7d046\u30dd\u30a4\u30f3\u30c8\u307e\u3067\u4e0b\u304c\u3063\u3066\u3044\u307e\u3059\u30025\u4ef6\u306b1\u4ef6\u306e\u30e9\u30d9\u30eb\u304c\u9593\u9055\u3063\u3066\u3044\u3066\u3082\u3001RandomForest\u306f\u307b\u3068\u3093\u3069\u5d29\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><strong>\u5d29\u308c\u305f\u4f8b\uff1a30%\u3067KNN\u304c\u7d0480%\u307e\u3067\u843d\u3061\u308b<\/strong><\/p>\n\n\n\n<p>\u30ce\u30a4\u30ba30%\u3067\u3001KNN\u306f\u7d0480%\u307e\u3067\u843d\u3061\u307e\u3057\u305f\u3002\u4ed6\u306e2\u3064\u306f\u7d0489\uff05\u3067\u3001\u5dee\u304c\u300110\u30dd\u30a4\u30f3\u30c8\u8fd1\u304f\u306b\u958b\u3044\u3066\u3044\u307e\u3059\u300240%\u3067\u306f\u3001\u3069\u306e\u30e2\u30c7\u30eb\u3067\u3082\u5927\u304d\u304f\u843d\u3061\u307e\u3057\u305f\u3002\u30e9\u30d9\u30eb\u306e4\u5272\u304c\u9593\u9055\u3063\u3066\u3044\u308b\u72b6\u614b\u306f\u307b\u307c\u5f53\u3066\u305a\u3063\u307d\u3046\u306b\u8fd1\u3044\u9818\u57df\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4e38\u6697\u8a18\u3057\u3066\u3044\u308b\u306e\u306b\u306a\u305c\u8010\u3048\u308b\u306e\u304b<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test-1024x640.png\" alt=\"\" class=\"wp-image-10080\" srcset=\"https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test-1024x640.png 1024w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test-300x188.png 300w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test-768x480.png 768w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test-1536x960.png 1536w, https:\/\/since2020.jp\/media\/wp-content\/uploads\/2026\/10\/fig2_train_vs_test.png 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u56f32\u306e\u5b9f\u8df5\u306f\u3001\u30ce\u30a4\u30ba\u5165\u308a\u306e\u8a13\u7df4\u30e9\u30d9\u30eb\u306b\u5bfe\u3059\u308b\u8a13\u7df4\u7cbe\u5ea6\u3067\u3059\u3002RandomForest\u306f\u3069\u306e\u30ce\u30a4\u30ba\u7387\u3067\u3082\u8a13\u7df4\u7cbe\u5ea6\u304c100%\u306e\u307e\u307e\u52d5\u304d\u307e\u305b\u3093\u3002\u9593\u9055\u3063\u305f\u30e9\u30d9\u30eb\u307e\u3067\u899a\u3048\u3053\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u8a13\u7df4\u7cbe\u5ea6\u306e\u898b\u65b9\u30921\u3064\u6574\u7406\u3057\u307e\u3059\u3002\u30e2\u30c7\u30eb\u304c\u300c\u672c\u5f53\u306e\u30d1\u30bf\u30fc\u30f3\u300d\u3060\u3051\u3092\u5b66\u3093\u3067\u3044\u3066\u3001\u9593\u9055\u3044\u3092\u899a\u3048\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u30ce\u30a4\u30ba\u5165\u308a\u306e\u30e9\u30d9\u30eb\u306b\u5bfe\u3059\u308b\u8a13\u7df4\u7cbe\u5ea6\u306f\u3001\u304a\u304a\u3088\u305d\u300c100%-\u30ce\u30a4\u30ba\u7387\u300d\u306b\u306a\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u9a13\u7d50\u679c\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u30e2\u30c7\u30eb(\u30ce\u30a4\u30ba20%)<\/td><td>\u30ce\u30a4\u30ba\u5165\u308a\u30e9\u30d9\u30eb\u3067\u306e\u8a13\u7df4\u7cbe\u5ea6<\/td><td>\u6b63\u3057\u3044\u30e9\u30d9\u30eb\u3067\u306e\u8a13\u7df4\u7cbe\u5ea6<\/td><td>\u30c6\u30b9\u30c8\u7cbe\u5ea6<\/td><\/tr><tr><td>LogisticRegression<\/td><td>77.7%<\/td><td>93.5%<\/td><td>92.8%<\/td><\/tr><tr><td>RandomForest<\/td><td>100.0%<\/td><td>79.9%<\/td><td>93.9%<\/td><\/tr><tr><td>KNN(k=5)<\/td><td>80.2%<\/td><td>91.9%<\/td><td>90.4%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u3068KNN\u306f\u3001\u30ce\u30a4\u30ba\u5165\u308a\u30e9\u30d9\u30eb\u3067\u306e\u8a13\u7df4\u7cbe\u5ea6\u304c\u7d0480%\u3067\u3001\u300c100%-\u30ce\u30a4\u30ba\u7387\u300d\u3068\u307b\u307c\u4e00\u81f4\u3057\u307e\u3059\u3002\u9593\u9055\u3044\u3092\u3042\u307e\u308a\u899a\u3048\u3089\u308c\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/li>\n\n\n\n<li>RandomForest\u306f100%\u3067\u3059\u3002\u9593\u9055\u3044\u307e\u3067\u899a\u3048\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u3092\u88cf\u4ed8\u3051\u308b\u306e\u304c\u3001\u6b63\u3057\u3044\u30e9\u30d9\u30eb\u3067\u63a1\u70b9\u3057\u76f4\u3057\u305f\u7d0480%\u3068\u3044\u3046\u6570\u5b57\u3067\u3059\u3002\u899a\u3048\u3053\u3093\u3060\u9593\u9055\u3044\u306e\u3076\u3093\u3060\u3051\u3001\u672c\u6765\u306e\u6b63\u89e3\u304b\u3089\u5916\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u305d\u308c\u3067\u3082\u3001RandomForest\u306e\u30c6\u30b9\u30c8\u7cbe\u5ea6\u306f93.9%\u3068\u3001\u30ce\u30a4\u30ba20%\u3067\u306f\u30013\u30e2\u30c7\u30eb\u306e\u4e2d\u3067\u6700\u3082\u9ad8\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u4e38\u6697\u8a18\u3057\u3066\u3044\u308b\u306e\u306b\u3001\u306a\u305c\u5d29\u308c\u306a\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<p><strong>\u6728\u306e\u672c\u6570\u3092\u5909\u3048\u3066\u307f\u308b<\/strong><\/p>\n\n\n\n<p>RandomForest\u306f\u6c7a\u5b9a\u6728\u306e\u591a\u6570\u6c7a\u3067\u3059\u30021\u672c\u305a\u3064\u306e\u6728\u306f\u9593\u9055\u3044\u3092\u899a\u3048\u3066\u5916\u3057\u307e\u3059\u304c\u3001\u899a\u3048\u308b\u9593\u9055\u3044\u306f\u6728\u3054\u3068\u306b\u9055\u3046\u306e\u3067\u3001\u591a\u6570\u6c7a\u3067\u6253\u3061\u6d88\u3057\u5408\u3046\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u8003\u3048\u307e\u3057\u305f\u3002\u30ce\u30a4\u30ba20%\u3067\u304d\u306e\u672c\u6570\u3060\u3051\u3092\u5909\u3048\u3066\u78ba\u304b\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u30e2\u30c7\u30eb(\u30ce\u30a4\u30ba20%)<\/td><td>\u30c6\u30b9\u30c8\u7cbe\u5ea6<\/td><\/tr><tr><td>\u6c7a\u5b9a\u6728<\/td><td>74.7%<\/td><\/tr><tr><td>RandomForest 10\u672c<\/td><td>87.3%<\/td><\/tr><tr><td>RandomForest 50\u672c<\/td><td>92.3%<\/td><\/tr><tr><td>RandomForest 200\u672c<\/td><td>93.6%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u6c7a\u5b9a\u67281\u672c\u306f\u3001\u30ce\u30a4\u30ba\u306a\u3057\u306e93.0%\u304b\u3089\u7d0418\u30dd\u30a4\u30f3\u30c8\u5d29\u308c\u307e\u3057\u305f\u304c\u3001\u6c17\u3092\u5897\u3084\u3059\u307b\u3069\u7cbe\u5ea6\u304c\u623b\u308a\u307e\u3057\u305f\u3002\u300c\u4e38\u6697\u8a18\u3057\u3066\u3044\u308b\u306e\u306b\u5d29\u308c\u306a\u3044\u300d\u306e\u306f\u3001\u6728\u306e\u6570\u304c\u591a\u3044\u304b\u3089\u3060\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u4e38\u6697\u8a18\u304c\u7121\u5bb3\u306a\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8449\u306b\u6700\u4f4e5\u4ef6\u8981\u6c42\u3057\u3066\u4e38\u6697\u8a18\u3092\u6291\u3048\u305fRandomForest(min_samples_leaf=5)\u306f\u3001\u30c6\u30b9\u30c8\u7cbe\u5ea6\u304c\u300194.6%\u3068\u3001\u3055\u3089\u306b1\u30dd\u30a4\u30f3\u30c8\u9ad8\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h2 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