{"id":2409,"date":"2024-09-05T08:45:51","date_gmt":"2024-09-04T23:45:51","guid":{"rendered":"https:\/\/secondlife.lol\/?p=2409"},"modified":"2024-09-05T15:59:58","modified_gmt":"2024-09-05T06:59:58","slug":"python-svm-visualization","status":"publish","type":"post","link":"https:\/\/secondlife.lol\/ja\/python-svm-visualization\/","title":{"rendered":"\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3SVM\u306e\u4f8b\u3068\u53ef\u8996\u5316\u3059\u308b - 2\u6b21\u5143"},"content":{"rendered":"<p>\u6a5f\u68b0\u5b66\u7fd2\u306e\u5206\u985e\u554f\u984c\u306b\u304a\u3044\u3066\u3001\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3(SVM, Support Vector Machine)\u306f\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u5f37\u529b\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002 \u7279\u306b\u3001\u30c7\u30fc\u30bf\u306e\u5206\u985e\u5883\u754c(Decision Boundary)\u3092\u660e\u78ba\u306b\u63cf\u304f\u3053\u3068\u3067\u3001\u8996\u899a\u7684\u306b\u7406\u89e3\u3057\u3084\u3059\u3044\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30dd\u30b9\u30c8\u3067\u306fPython <code>scikit-learn<\/code> \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066SVM\u306e\u4f8b\u3092\u898b\u3066\u3001\u305d\u306e\u7d50\u679c\u3092 <strong>\u53ef\u8996\u5316<\/strong>SVM\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b\u3092\u7406\u89e3\u3057\u3001\u305d\u306e\u7d50\u679c\u304c\u3069\u306e\u3088\u3046\u306b\u8996\u899a\u7684\u306b\u8868\u73fe\u3055\u308c\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<style>.kb-image2409_1fb5e4-dd .kb-image-has-overlay:after{opacity:0.3;border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;}.kb-image2409_1fb5e4-dd img.kb-img, .kb-image2409_1fb5e4-dd .kb-img img{border-top:31px solid;border-right:31px solid;border-bottom:31px solid;border-left:31px solid;border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 1024px){.kb-image2409_1fb5e4-dd img.kb-img, .kb-image2409_1fb5e4-dd .kb-img img{border-top:31px solid;border-right:31px solid;border-bottom:31px solid;border-left:31px solid;}}@media all and (max-width: 767px){.kb-image2409_1fb5e4-dd img.kb-img, .kb-image2409_1fb5e4-dd .kb-img img{border-top:31px solid;border-right:31px solid;border-bottom:31px solid;border-left:31px solid;}}<\/style>\n<figure class=\"wp-block-kadence-image kb-image2409_1fb5e4-dd size-full\"><img decoding=\"async\" width=\"546\" height=\"435\" src=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2319.jpg\" alt=\"SVM \uc608\uc81c \uc378\ub124\uc77c\" class=\"kb-img wp-image-2415\" srcset=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2319.jpg 546w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2319-300x239.jpg 300w\" sizes=\"(max-width: 546px) 100vw, 546px\" \/><\/figure>\n\n\n<style>.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);border-top-left-radius:5px;border-top-right-radius:5px;border-bottom-right-radius:5px;border-bottom-left-radius:5px;box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title-wrap{color:var(--global-palette2, #2B6CB0);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{color:var(--global-palette2, #2B6CB0);font-size:28px;font-weight:regular;font-style:normal;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap .kb-table-of-content-list{color:var(--global-palette1, #3182CE);line-height:2em;font-weight:regular;font-style:normal;margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-right:0px;margin-bottom:0px;margin-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap .kb-table-of-content-list .kb-table-of-contents__entry:hover{color:var(--global-palette6, #718096);}@media all and (max-width: 1024px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);}}@media all and (max-width: 1024px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{font-size:28px;}}@media all and (max-width: 767px){.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-content-wrap{border-top:3px solid var(--global-palette2, #2B6CB0);border-right:3px solid var(--global-palette2, #2B6CB0);border-bottom:3px solid var(--global-palette2, #2B6CB0);border-left:3px solid var(--global-palette2, #2B6CB0);}.kb-table-of-content-nav.kb-table-of-content-id83_5f28a6-34 .kb-table-of-contents-title{font-size:28px;}}<\/style>\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3(SVM)\u3092\u7406\u89e3\u3059\u308b<\/h2>\n\n\n\n<p><strong>SVM<\/strong>\u306f\u3001\u4e0e\u3048\u3089\u308c\u305f\u30c7\u30fc\u30bf\u3092\u4e8c\u3064\u306e\u30af\u30e9\u30b9\u306b\u5206\u96e2\u3067\u304d\u308b\u6700\u9069\u306a\u5883\u754c(\u30cf\u30a4\u30d1\u30fc\u30d7\u30ec\u30fc\u30f3\u3001Hyperplane)\u3092\u898b\u3064\u3051\u308b\u6559\u5e2b\u3042\u308a\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002 \u3053\u306e\u3068\u304d\u3001\u5206\u985e\u5883\u754c\u304b\u3089\u6700\u3082\u8fd1\u3044\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8(\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30c8\u30eb)\u3068\u306e\u8ddd\u96e2\u3092\u6700\u5927\u5316\u3057\u3066\u6700\u9069\u306a\u5206\u985e\u5668\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304cSVM\u306e\u6838\u5fc3\u3067\u3059\u3002<\/p>\n\n\n\n<p>SVM\u306f\u7279\u306b\u9ad8\u6b21\u5143\u3067\u52d5\u4f5c\u3059\u308b\u3068\u304d\u306b\u52b9\u679c\u7684\u3067\u3001\u30ab\u30fc\u30cd\u30eb\u95a2\u6570(kernel)\u3092\u5229\u7528\u3057\u3066\u975e\u7dda\u5f62\u30c7\u30fc\u30bf\u3082\u5206\u985e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u56de\u306e\u4f8b\u3067\u306f\u30012\u6b21\u5143\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u3001SVM\u304c\u30c7\u30fc\u30bf\u3092\u5206\u985e\u3059\u308b\u5883\u754c\u3092\u8996\u899a\u5316\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Python\u30b3\u30fc\u30c9\u306e\u6bb5\u968e\u7684\u306a\u8aac\u660e<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30a4\u30f3\u30dd\u30fc\u30c8<\/h3>\n\n\n\n<p>\u307e\u305a\u3001SVM\u3092\u5b9f\u88c5\u3057\u3001\u7d50\u679c\u3092\u53ef\u8996\u5316\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\nimport matplotlib.pyplot as plt\nfrom sklearn import datasets\nsklearn.model_selection \u304b\u3089 train_test_split \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\nsklearn.svm \u304b\u3089 SVC \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>numpy<\/code>: \u914d\u5217\u3068\u6570\u5b66\u8a08\u7b97\u306e\u305f\u3081\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/li>\n\n\n\n<li><code>matplotlib.pyplot<\/code>: \u30b0\u30e9\u30d5\u3068\u53ef\u8996\u5316\u306e\u305f\u3081\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/li>\n\n\n\n<li><code>sklearn.datasets<\/code>: \u7c21\u5358\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u3001\u4eca\u56de\u306e\u4f8b\u3067\u306f <code>make_classification<\/code> \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>train_test_split<\/code>\u3092\u6307\u5b9a\u3057\u307e\u3059\uff1a\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u7528\u3068\u30c6\u30b9\u30c8\u7528\u306b\u5206\u96e2\u3059\u308b\u95a2\u6570\u3067\u3059\u3002<\/li>\n\n\n\n<li><code>SVC<\/code>: \u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3(SVM)\u5206\u985e\u5668\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.\u30b5\u30f3\u30d7\u30eb\u30c7\u30fc\u30bf\u4f5c\u6210<\/h3>\n\n\n\n<p>\u7c21\u5358\u306a2\u6b21\u5143\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u3066SVM\u3067\u5b66\u7fd2\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u7c21\u5358\u306a2D\u30c7\u30fc\u30bf\u751f\u6210\nX, y = datasets.make_classification(n_samples=100, n_features=2, n_informative=2, n_redundant=0, random_state=42)\n\n#\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u5b66\u7fd2\u7528\u3068\u30c6\u30b9\u30c8\u7528\u306b\u5206\u96e2\u3057\u307e\u3059\u3002\nX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=42)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>n_samples=100<\/code>: 100\u500b\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>n_features=2<\/code>\u306e2\u6b21\u5143\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u307e\u3059\uff1a2\u3064\u306e\u7279\u5fb4\u3092\u6301\u30642\u6b21\u5143\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>n_informative=2<\/code>: \u3069\u3061\u3089\u306e\u7279\u5fb4\u3082\u5206\u985e\u306b\u5f79\u7acb\u3064\u60c5\u5831\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.SVM\u30e2\u30c7\u30eb\u306e\u751f\u6210\u3068\u5b66\u7fd2<\/h3>\n\n\n\n<p>\u751f\u6210\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u7528\u3068\u30c6\u30b9\u30c8\u7528\u306b\u5206\u96e2\u3057\u305f\u5f8c\u3001SVM\u30e2\u30c7\u30eb\u3092\u5b66\u7fd2\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># SVM\u30e2\u30c7\u30eb\u751f\u6210\nmodel = SVC(kernel='linear')\n\n# \u30e2\u30c7\u30eb\u5b66\u7fd2\nmodel.fit(X_train, y_train)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>kernel='linear'<\/code>: \u7dda\u5f62\u30ab\u30fc\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30012\u3064\u306e\u30af\u30e9\u30b9\u3092\u5206\u96e2\u3059\u308b\u76f4\u7dda\u3092\u898b\u3064\u3051\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">SVM\u7d50\u679c\u306e\u53ef\u8996\u5316<\/h2>\n\n\n\n<p>\u6b21\u306b\u3001\u5b66\u7fd2\u3055\u308c\u305fSVM\u30e2\u30c7\u30eb\u306e\u5206\u985e\u5883\u754c\u3068\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u8996\u899a\u5316\u3057\u307e\u3059\u3002\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3<strong> \u53ef\u8996\u5316<\/strong>\u306f\u3001SVM\u30e2\u30c7\u30eb\u304c\u3069\u306e\u3088\u3046\u306b\u30c7\u30fc\u30bf\u3092\u5206\u985e\u3059\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u5b66\u7fd2\u30c7\u30fc\u30bf\u3068\u5206\u985e\u5883\u754c\u3092\u53ef\u8996\u5316\u3059\u308b\u95a2\u6570\ndef plot_decision_boundary(X, y, model)\uff1a\n    # \u5883\u754c\u3092\u53ef\u8996\u5316\u3059\u308b\u305f\u3081\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u751f\u6210\u3059\u308b\u95a2\u6570\n    x_min, x_max = X[:, 0].min() - 1, X[:, 0].max() + 1\n    y_min, y_max = X[:, 1].min() - 1, X[:, 1].max() + 1\n    xx, yy = np.meshgrid(np.arange(x_min, x_max, 0.01)\u3001\n                         np.arange(y_min, y_max, 0.01))\n\n    #\u30e2\u30c7\u30eb\u3092\u4f7f\u3063\u3066\u5404\u5ea7\u6a19\u3067\u306e\u4e88\u6e2c\u5024\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\n    Z = model.predict(np.c_[xx.ravel(), yy.ravel()])\n    Z = Z.reshape(xx.shape)\n\n    # \u5883\u754c\u306e\u53ef\u8996\u5316\n    plt.contourf(xx, yy, Z, alpha=0.8)\n\n    # \u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u306e\u53ef\u8996\u5316\n    plt.scatter(X[:, 0], X[:, 1], c=y, edgecolors='k', marker='o', s=50)\n    plt.xlim(xx.min(), xx.max())\n    plt.ylim(yy.min(), yy.max())\n    plt.title(\"SVM Decision Boundary\")\n    plt.show()\n\n# \u5b66\u7fd2\u3055\u308c\u305f\u30e2\u30c7\u30eb\u3068\u4e00\u7dd2\u306b\u5883\u754c\u3092\u53ef\u8996\u5316\u3057\u307e\u3059\u3002\nplot_decision_boundary(X_test, y_test, model)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>np.meshgrid<\/code>: \u5883\u754c\u3092\u8996\u899a\u5316\u3059\u308b\u305f\u3081\u306e\u30b0\u30ea\u30c3\u30c9\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>model.predict<\/code>\u751f\u6210\u3055\u308c\u305f\u30b0\u30ea\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u3001\u30e2\u30c7\u30eb\u304c\u4e88\u6e2c\u3057\u305f\u5024\u306b\u57fa\u3065\u3044\u3066\u5883\u754c\u3092\u63cf\u753b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.contourf<\/code>\u4e88\u6e2c\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u5206\u985e\u5883\u754c\u3092\u53ef\u8996\u5316\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><code>plt.scatter<\/code>: \u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u3092\u8996\u899a\u5316\u3057\u3066\u3001\u30e2\u30c7\u30eb\u304c\u6b63\u3057\u304f\u5206\u985e\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001SVM\u304c\u5b66\u7fd2\u3057\u305f\u7d50\u679c\u3001\u30c7\u30fc\u30bf\u306e\u5206\u985e\u5883\u754c\u304c\u8868\u793a\u3055\u308c\u3001\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u304c\u305d\u306e\u5883\u754c\u5185\u306b\u6b63\u3057\u304f\u5206\u985e\u3055\u308c\u305f\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3\u53ef\u8996\u5316\u4f8b\u65bd\u8a2d\u540d<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5206\u985e\u5883\u754c\u304c2\u3064\u306e\u30af\u30e9\u30b9\u3092\u5206\u96e2\u3059\u308b\u7dda\u5f62\u5883\u754c\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u5404\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u305d\u306e\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u8272\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30e2\u30c7\u30eb\u304c\u5b66\u7fd2\u3057\u305f\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30c8\u30eb\u3082\u3001\u53ef\u8996\u5316\u3067\u5883\u754c\u306b\u8fd1\u3044\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b8c\u5168\u306a\u7d71\u5408\u30b3\u30fc\u30c9<\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3(SVM)\u30e2\u30c7\u30eb\u306e\u5168\u4f53\u30b3\u30fc\u30c9\u3067\u3059\u3002\u6bb5\u968e\u5225\u306b\u5fc5\u8981\u306a\u90e8\u5206\u306b\u6ce8\u91c8\u3092\u8ffd\u52a0\u3057\u3066\u8aac\u660e\u3057\u305f\u306e\u3067\u53c2\u8003\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy as np\nimport matplotlib.pyplot as plt\nfrom sklearn import datasets\nsklearn.model_selection \u304b\u3089 train_test_split \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\nsklearn.svm \u304b\u3089 SVC \u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002\n\n# 1.\u30c7\u30fc\u30bf\u751f\u6210\n# 2\u3064\u306e\u7279\u5fb4\u3092\u6301\u3064\u30b5\u30f3\u30d7\u30eb100\u500b\u3092\u751f\u6210\u3001\u30af\u30e9\u30b9\u9593\u5206\u5e03\u304c\u3088\u304f\u5206\u96e2\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\nX, y = datasets.make_classification(n_samples=100, n_features=2, n_informative=2\u3001\n                                    n_redundant=0, random_state=42)\n\n# 2.\u30c7\u30fc\u30bf\u5206\u5272\n#\u5b66\u7fd2\u752870%\u3001\u30c6\u30b9\u30c8\u752830%\u306b\u30c7\u30fc\u30bf\u3092\u5206\u3051\u308b\nX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=42)\n\n# 3.SVM\u30e2\u30c7\u30eb\u306e\u751f\u6210\n#\u7dda\u5f62\u30ab\u30fc\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u305fSVM\u30e2\u30c7\u30eb\u751f\u6210\nmodel = SVC(kernel='linear')\n\n# 4.\u30e2\u30c7\u30eb\u5b66\u7fd2\n#\u306e\u5b66\u7fd2\u30c7\u30fc\u30bf\u3092\u5229\u7528\u3057\u3066SVM\u30e2\u30c7\u30eb\u3092\u5b66\u7fd2\u3057\u307e\u3059\u3002\nmodel.fit(X_train, y_train)\n\n# 5.\u53ef\u8996\u5316\u95a2\u6570\u306e\u5b9a\u7fa9\n# \u5b66\u7fd2\u3055\u308c\u305f\u30e2\u30c7\u30eb\u306e\u5206\u985e\u5883\u754c\u3068\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u3092\u8996\u899a\u5316\u3059\u308b\u95a2\u6570\u3067\u3059\u3002\ndef plot_decision_boundary(X, y, model)\uff1a\n    # 5.1 \u5883\u754c\u53ef\u8996\u5316\u306e\u305f\u3081\u306e\u30b0\u30ea\u30c3\u30c9\u8a2d\u5b9a\n    x_min, x_max = X[:, 0].min() - 1, X[:, 0].max() + 1\n    y_min, y_max = X[:, 1].min() - 1, X[:, 1].max() + 1\n    xx, yy = np.meshgrid(np.arange(x_min, x_max, 0.01)\u3001\n                         np.arange(y_min, y_max, 0.01))\n\n    # 5.2 \u30b0\u30ea\u30c3\u30c9\u306e\u5404\u70b9\u304b\u3089\u30e2\u30c7\u30eb\u304c\u4e88\u6e2c\u3057\u305f\u5024\u3092\u8a08\u7b97\u3059\u308b\n    Z = model.predict(np.c_[xx.ravel(), yy.ravel()])\n    Z = Z.reshape(xx.shape)\n\n    # 5.3 \u4e88\u6e2c\u3057\u305f\u5024\u306b\u3088\u308b\u5206\u985e\u5883\u754c\u306e\u63cf\u753b\n    plt.contourf(xx, yy, Z, alpha=0.8)\n\n    # 5.4 \u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u3092\u53ef\u8996\u5316\u3059\u308b\n    plt.scatter(X[:, 0], X[:, 1], c=y, edgecolors='k', marker='o', s=50)\n    plt.xlim(xx.min(), xx.max())\n    plt.ylim(yy.min(), yy.max())\n    plt.title(\"SVM Decision Boundary\")\n    plt.show()\n\n# 6.\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u5206\u985e\u5883\u754c\u306e\u53ef\u8996\u5316\nplot_decision_boundary(X_test, y_test, model)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b3\u30fc\u30c9\u8aac\u660e<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u751f\u6210<\/strong>: <code>datasets.make_classification<\/code> \u95a2\u6570\u30672\u6b21\u5143\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u3001SVM\u3067\u7c21\u5358\u306b\u8996\u899a\u5316\u3067\u304d\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u5206\u5272<\/strong>: <code>train_test_split<\/code>\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u7528(70%)\u3068\u30c6\u30b9\u30c8\u7528(30%)\u306b\u5206\u3051\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>SVM\u30e2\u30c7\u30eb\u751f\u6210<\/strong>: <code>SVC<\/code> \u30af\u30e9\u30b9\u306e <code>kernel='linear'<\/code>\u3092\u4f7f\u7528\u3057\u3066\u7dda\u5f62\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3\u30e2\u30c7\u30eb\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30e2\u30c7\u30eb\u5b66\u7fd2<\/strong>: <code>\u30d5\u30a3\u30c3\u30c8<\/code> \u30e1\u30bd\u30c3\u30c9\u3067\u5b66\u7fd2\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u3044\u3066\u30e2\u30c7\u30eb\u3092\u5b66\u7fd2\u3055\u305b\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u53ef\u8996\u5316\u6a5f\u80fd<\/strong>: \u751f\u6210\u3055\u308c\u305f\u30e2\u30c7\u30eb\u306e\u5206\u985e\u5883\u754c\u3092\u63cf\u304f\u305f\u3081\u306e\u95a2\u6570\u3067\u3001\u30b0\u30ea\u30c3\u30c9\u3092\u751f\u6210\u3057\u3001\u5404\u30dd\u30a4\u30f3\u30c8\u3067\u306e\u4e88\u6e2c\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u5206\u985e\u5883\u754c\u3092\u8996\u899a\u5316\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u7d50\u679c\u306e\u53ef\u8996\u5316<\/strong>\u3092\u8868\u793a\u3057\u307e\u3059\uff1a\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e2\u30c7\u30eb\u304c\u5b66\u7fd2\u3057\u305f\u5206\u985e\u5883\u754c\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/h2>\n\n\n\n<p><strong>Q1.\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3\uff08SVM\uff09\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><br>A1.SVM\u306f\u3001\u4e0e\u3048\u3089\u308c\u305f\u30c7\u30fc\u30bf\u30922\u3064\u306e\u30af\u30e9\u30b9\u306b\u5206\u96e2\u3059\u308b\u6700\u9069\u306a\u5883\u754c\u3092\u898b\u3064\u3051\u308b\u5206\u985e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30c8\u30eb\u306f\u3001\u3053\u306e\u5883\u754c\u3092\u5b9a\u7fa9\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u30c7\u30fc\u30bf\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>Q2. <code>\u30ab\u30fc\u30cd\u30eb<\/code>\u3063\u3066\u306a\u3093\u3067\u3059\u304b\uff1f<\/strong><br>A2. <code>\u30ab\u30fc\u30cd\u30eb<\/code>\u306f\u30c7\u30fc\u30bf\u3092\u5909\u63db\u3057\u3066\u975e\u7dda\u5f62\u95a2\u4fc2\u3092\u6301\u3064\u30c7\u30fc\u30bf\u3092\u7dda\u5f62\u7684\u306b\u5206\u96e2\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u95a2\u6570\u3067\u3059\u3002\u7dda\u5f62\u30ab\u30fc\u30cd\u30eb\u3001\u591a\u9805\u5f0f\u30ab\u30fc\u30cd\u30eb\u3001RBF\u30ab\u30fc\u30cd\u30eb\u306a\u3069\u69d8\u3005\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>Q3.\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3\u306e\u53ef\u8996\u5316\u306f2\u6b21\u5143\u30c7\u30fc\u30bf\u306e\u307f\u53ef\u80fd\u3067\u3059\u304b\uff1f<\/strong><br>A3.\u8996\u899a\u5316\u306f2\u6b21\u5143\u307e\u305f\u306f3\u6b21\u5143\u30c7\u30fc\u30bf\u3067\u306f\u76f4\u611f\u7684\u306b\u53ef\u80fd\u3067\u3059\u304c\u3001\u3088\u308a\u9ad8\u3044\u6b21\u5143\u306e\u30c7\u30fc\u30bf\u306f\u8996\u899a\u7684\u306b\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u56f0\u96e3\u3067\u3059\u3002 \u3057\u304b\u3057\u3001SVM\u306f\u9ad8\u6b21\u5143\u30c7\u30fc\u30bf\u306b\u3082\u9069\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>Q4.SVM\u306e\u9577\u6240\u3068\u77ed\u6240\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><br>A4.\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u306f\u3001\u9ad8\u6b21\u5143\u30c7\u30fc\u30bf\u3067\u306e\u6027\u80fd\u304c\u9ad8\u304f\u3001\u904e\u9069\u5408\u306b\u5f37\u3044\u3067\u3059\u3002\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u306f\u3001\u30c7\u30fc\u30bf\u304c\u591a\u3044\u5834\u5408\u3001\u5b66\u7fd2\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3\u306e\u53ef\u8996\u5316\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001Python\u306e <code>scikit-learn<\/code>\u3092\u4f7f\u7528\u3057\u3066 <strong>\u30b5\u30dd\u30fc\u30c8\u30d9\u30af\u30bf\u30fc\u30de\u30b7\u30f3(SVM)<\/strong>\u3092\u5b9f\u88c5\u3057\u3066\u3001\u305d\u306e\u7d50\u679c\u3092\u53ef\u8996\u5316\u3059\u308b\u904e\u7a0b\u3092\u898b\u307e\u3057\u305f\u3002 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