{"id":2420,"date":"2024-09-06T16:10:47","date_gmt":"2024-09-06T07:10:47","guid":{"rendered":"https:\/\/secondlife.lol\/?p=2420"},"modified":"2024-09-05T16:47:22","modified_gmt":"2024-09-05T07:47:22","slug":"python-3d-svm-visualization","status":"publish","type":"post","link":"https:\/\/secondlife.lol\/zh\/python-3d-svm-visualization\/","title":{"rendered":"\u652f\u6301\u5411\u91cf\u673a\u793a\u4f8b--\u4e09\u7ef4\u53ef\u89c6\u5316"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u652f\u6301\u5411\u91cf\u673a\uff08SVM\uff09\u662f\u6700\u6d41\u884c\u7684\u6570\u636e\u5206\u7c7b\u7b97\u6cd5\u4e4b\u4e00\uff0c\u5bf9\u4e09\u7ef4\u6570\u636e\u548c\u4e8c\u7ef4\u6570\u636e\u90fd\u6709\u5f3a\u5927\u7684\u5904\u7406\u80fd\u529b\u3002\u5728\u672c\u7bc7\u652f\u6301\u5411\u91cf\u673a\u793a\u4f8b\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 <strong>Python<\/strong>\u548c <code>scikit-learn<\/code>, <code>matplotlib<\/code> \u4f7f\u7528\u56fe\u4e66\u9986 <strong>\u4e09\u7ef4\u652f\u6301\u5411\u91cf\u673a (SVM)<\/strong>\u5e76\u91cd\u70b9\u5173\u6ce8\u5982\u4f55\u5c06\u7ed3\u679c\u53ef\u89c6\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u7684\u5206\u7c7b\u8fb9\u754c\u53ef\u80fd\u66f4\u52a0\u590d\u6742\uff0c\u4f46\u53ef\u89c6\u5316\u53ef\u4ee5\u4f7f\u5176\u66f4\u5bb9\u6613\u7406\u89e3\u3002\u8ba9\u6211\u4eec\u770b\u770b\u8fd9\u4e2a\u4f8b\u5b50\uff0c\u4e86\u89e3 SVM \u5982\u4f55\u5904\u7406\u4e09\u7ef4\u6570\u636e\u3002<\/p>\n\n\n<style>.kb-image2420_676f41-75 .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-image2420_676f41-75 img.kb-img, .kb-image2420_676f41-75 .kb-img img{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);}<\/style>\n<div class=\"wp-block-kadence-image kb-image2420_676f41-75\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"600\" height=\"620\" src=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2326-600x620.jpeg\" alt=\"\uc11c\ud3ec\ud2b8 \ubca1\ud2b8 \uba38\uc2e0 \uc608\uc81c 3\ucc28\uc6d0 \ud3ec\uc2a4\ud2b8 \uadf8\ub9bc\" class=\"kb-img wp-image-2425\" srcset=\"https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2326-600x620.jpeg 600w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2326-300x310.jpeg 300w, https:\/\/secondlife.lol\/wp-content\/uploads\/2024\/09\/IMG_2326.jpeg 637w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption>(\u652f\u6301\u5411\u91cf\u673a\u8fd0\u884c\u7ed3\u679c\u793a\u4f8b - 3-D )<\/figcaption><\/figure><\/div>\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\">\u4e86\u89e3\u4e09\u7ef4\u652f\u6301\u5411\u91cf\u673a (SVM)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SVM<\/strong>\u662f\u4e00\u79cd\u7b97\u6cd5\uff0c\u5b83\u80fd\u627e\u5230\u5c06\u6570\u636e\u5206\u4e3a\u4e24\u7c7b\u7684\u6700\u4f73\u8fb9\u754c\uff08\u8d85\u5e73\u9762\uff09\u3002\u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\uff0c\u8fd9\u4e2a\u8d85\u5e73\u9762\u663e\u793a\u4e3a\u4e00\u4e2a\u5e73\u9762\uff0c\u5c06\u6570\u636e\u5212\u5206\u4e3a\u4e0d\u540c\u7684\u7c7b\u522b\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u5177\u6709\u4e09\u4e2a\u7279\u5f81\u7684\u6570\u636e\u5bf9\u4e09\u7ef4\u5206\u7c7b\u8fb9\u754c\u8fdb\u884c\u53ef\u89c6\u5316\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u9010\u6b65\u7f16\u5199 Python \u4ee3\u7801<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u5bfc\u5165\u6240\u9700\u7684\u5e93<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u52a0\u8f7d\u751f\u6210\u4e09\u7ef4\u6570\u636e\u548c\u5b9e\u73b0 SVM \u6240\u9700\u7684\u5e93\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c06 numpy \u5bfc\u5165 np\nimport matplotlib.pyplot as plt\nfrom mpl_toolkits.mplot3d import Axes3D # \u4e09\u7ef4\u53ef\u89c6\u5316\u6a21\u5757\nfrom sklearn import datasets\nfrom sklearn.model_selection import train_test_split\nfrom sklearn.svm import SVC<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>mpl_toolkits.mplot3d.Axes3D<\/code>\u7ed8\u5236 3D \u56fe\u5f62\u9700\u8981\u8be5\u6a21\u5757\u3002<\/li>\n\n\n\n<li><code>\u4ea4\u6362\u865a\u7535\u8def<\/code>: <code>scikit-learn<\/code>\u516c\u53f8\u63d0\u4f9b\u7684\u652f\u6301\u5411\u91cf\u673a\uff08SVM\uff09\u5206\u7c7b\u5668\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u521b\u5efa\u6837\u672c\u6570\u636e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a5\u4e0b\u6765\uff0c\u751f\u6210\u4e09\u7ef4\u6570\u636e\u6765\u8bad\u7ec3 SVM\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u751f\u6210\u5177\u6709\u4e09\u4e2a\u7279\u5f81\u7684\u4e09\u7ef4\u6570\u636e\nX, y = datasets.make_classification(n_samples=100, n_features=3, n_informative=3, n_redundant=0, random_state=42)\n\n# \u5c06\u6570\u636e\u5206\u522b\u7528\u4e8e\u8bad\u7ec3\u548c\u6d4b\u8bd5\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>\uff1a\u751f\u6210 100 \u4e2a\u6837\u672c\u3002<\/li>\n\n\n\n<li><code>n_features=3<\/code>\u8bbe\u7f6e\uff1a\u5c06\u6bcf\u4e2a\u6837\u672c\u8bbe\u7f6e\u4e3a 3 \u4e2a\u7279\u5f81\u3002<\/li>\n\n\n\n<li><code>n_informative=3<\/code>\u8fd9\u4e09\u4e2a\u7279\u5f81\u90fd\u662f\u5206\u7c7b\u7684\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u521b\u5efa\u5e76\u8bad\u7ec3 SVM \u6a21\u578b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u521b\u5efa\u7684\u6570\u636e\u8bad\u7ec3 SVM \u6a21\u578b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u4e3a # 3D \u6570\u636e\u521b\u5efa SVM \u6a21\u578b\nmodel = SVC(kernel='linear')\n\n\u8bad\u7ec3 # \u6a21\u578b\nmodel.fit(X_train, y_train)<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\u5185\u6838='\u7ebf\u6027<\/code>\u4f7f\u7528\u7ebf\u6027\u6838\u67e5\u627e\u6570\u636e\u4e4b\u95f4\u7684\u5206\u7c7b\u754c\u9650\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u53ef\u89c6\u5316 SVM 3D \u7ed3\u679c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u5c06\u8bad\u7ec3\u597d\u7684 SVM \u6a21\u578b\u7ed3\u679c\u8f93\u51fa\u5230 <strong>3D \u53ef\u89c6\u5316<\/strong>\u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\uff0c\u5206\u7c7b\u8fb9\u754c\u5448\u73b0\u4e3a\u4e00\u4e2a\u5e73\u9762\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u7528\u4e8e\u53ef\u89c6\u5316\u8bad\u7ec3\u6709\u7d20\u7684 SVM \u6a21\u578b\u7684\u4e09\u7ef4\u5206\u7c7b\u8fb9\u754c\u7684\u51fd\u6570\ndef plot_3d_decision_boundary(X, y, model)\uff1a\nfig = plt.figure(figsize=(10, 8))\nax = fig.add_subplot(111, projection='3d')\n\n\u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u7ed8\u5236 # \u6570\u636e\u70b9\nax.scatter(X[:, 0], X[:, 1], X[:, 2], c=y, cmap='coolwarm', s=60, edgecolours='k')\n\n\u8bbe\u7f6e # \u8fb9\u754c\u53ef\u89c6\u5316\u7f51\u683c\nxlim = (X[:, 0].min(), X[:, 0].max())\nylim = (X[:, 1].min(), X[:, 1].max())\nzlim = (X[:, 2].min(), X[:, 2].max())\n\nxx, yy = np.meshgrid(np.linspace(xlim[0], xlim[1], 30)\u3001<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b8c\u6574\u7684\u96c6\u6210\u4ee3\u7801<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e09\u7ef4\u652f\u6301\u5411\u91cf\u673a (SVM) \u6a21\u578b\u7684\u5b8c\u6574\u4ee3\u7801\uff0c\u5e76\u9644\u6709\u6ce8\u91ca\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5c06 numpy \u5bfc\u5165 np\nimport matplotlib.pyplot as plt\nfrom mpl_toolkits.mplot3d import Axes3D # \u7528\u4e8e\u7ed8\u5236\u4e09\u7ef4\u56fe\u5f62\u7684\u6a21\u5757\nfrom sklearn import datasets\nfrom sklearn.model_selection import train_test_split\nfrom sklearn.svm import SVC\n\n# 1. \u751f\u6210\u4e09\u7ef4\u6570\u636e\n# \u751f\u6210 100 \u4e2a\u5177\u6709 3 \u4e2a\u7279\u5f81\u7684\u6837\u672c\u3002\n# n_informative=3\uff1a\u53ea\u4f7f\u7528 3 \u4e2a\u91cd\u8981\u7279\u5f81\uff0cn_redundant=0\uff1a\u65e0\u5197\u4f59\u7279\u5f81\nX, y = datasets.make_classification(n_samples=100, n_features=3, n_informative=3\u3001\n                                    n_redundant=0, random_state=42)\n\n# 2.\u5c06\u6570\u636e\u96c6\u5206\u4e3a\u8bad\u7ec3\u96c6\u548c\u6d4b\u8bd5\u96c6\n# \u4f7f\u7528 701 TP3T \u6570\u636e\u8fdb\u884c\u8bad\u7ec3\uff0c\u4f7f\u7528 301 TP3T \u6570\u636e\u8fdb\u884c\u6d4b\u8bd5\u3002\nX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.3, random_state=42)\n\n# 3. \u751f\u6210 SVM \u6a21\u578b\n\u4f7f\u7528 # \u7ebf\u6027\u5185\u6838\u521b\u5efa SVM \u6a21\u578b\u3002\nmodel = SVC(kernel='linear')\n\n# 4. \u8bad\u7ec3\u6a21\u578b\n\u4f7f\u7528 # \u8bad\u7ec3\u6570\u636e\u8bad\u7ec3 SVM \u6a21\u578b\u3002\nmodel.fit(X_train, y_train)\n\n# 5.\u5b9a\u4e49\u4e09\u7ef4\u53ef\u89c6\u5316\u51fd\u6570\ndef plot_3d_decision_boundary(X, y, model)\uff1a\n    # \u4e3a\u4e09\u7ef4\u56fe\u5f62\u751f\u6210\u4e00\u4e2a\u7ed8\u56fe\n    fig = plt.figure(figsize=(10, 8))\n    ax = fig.add_subplot(111, projection='3d')\n\n    # 5.1 \u53ef\u89c6\u5316\u6570\u636e\u70b9\n    # \u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u663e\u793a\u6570\u636e\uff0c\u5e76\u6839\u636e\u6bcf\u4e2a\u7c7b\u522b\u8fdb\u884c\u989c\u8272\u7f16\u7801\u3002\n    ax.scatter(X[:, 0], X[:, 1], X[:, 2], c=y, cmap='coolwarm', s=60, edgecolours='k')\n\n    # 5.2 \u4e3a\u8fb9\u754c\u53ef\u89c6\u5316\u8bbe\u7f6e\u7f51\u683c\n    xlim = (X[:, 0].min(), X[:, 0].max())\n    ylim = (X[:, 1].min(), X[:, 1].max())\n    zlim = (X[:, 2].min(), X[:, 2].max())\n\n    xx, yy = np.meshgrid(np.linspace(xlim[0], xlim[1], 30), np.linspace(ylim[0], ylim[1], 30))\n\n    # 5.3 \u8ba1\u7b97\u51b3\u7b56\u8fb9\u754c\u5e73\u9762\n    \u4f7f\u7528 # \u7ebf\u6027 SVM \u7684\u6743\u91cd\u548c\u622a\u8ddd\u5b9a\u4e49\u8fb9\u754c\u5e73\u9762\u3002\n    # \u6a21\u578b\u7684 coef_ \u4ee3\u8868\u6676\u4f53\u8fb9\u754c\u5e73\u9762\u7684\u659c\u7387\u3002\n    Z = \uff08-model.coef_[0][0] * xx - model.coef_[0][1] * yy - model.intercept_\uff09\/model.coef_[0][2\uff3d\n\n    # 5.4 \u53ef\u89c6\u5316\u6676\u4f53\u8fb9\u754c\u5e73\u9762\n    ax.plot_surface(xx, yy, Z, color='green', alpha=0.3)\n\n    # 5.5 \u8bbe\u7f6e\u8f74\u6807\u7b7e\n    ax.set_xlabel(\"Feature 1\")\n    ax.set_ylabel(\"Feature 2\")\n    ax.set_zlabel(\"Feature 3\")\n    ax.set_title(\"SVM 3D \u5224\u5b9a\u8fb9\u754c\")\n\n    # 5.6 \u663e\u793a\u56fe\u8868\n    plt.show()\n\n# 6.\u4f7f\u7528\u6d4b\u8bd5\u6570\u636e\u76f4\u89c2\u663e\u793a SVM \u51b3\u7b56\u8fb9\u754c\nplot_3d_decision_boundary(X_test, y_test, model)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ee3\u7801\u8bf4\u660e\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u751f\u6210\u6570\u636e<\/strong>: <code>\u5206\u7c7b<\/code> \u51fd\u6570\u751f\u6210\u4e09\u7ef4\u6570\u636e\uff0c\u4ee5\u4fbf\u7528 SVM \u8fdb\u884c\u8bad\u7ec3\u3002 <code>n_features=3<\/code>\u521b\u5efa\u4e09\u7ef4\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u6570\u636e\u5206\u533a<\/strong>: <code>\u8bad\u7ec3\u6d4b\u8bd5\u62c6\u5206<\/code>\u5c06\u8bad\u7ec3\u548c\u6d4b\u8bd5\u6570\u636e\u5206\u5f00\u3002<\/li>\n\n\n\n<li><strong>\u521b\u5efa\u548c\u8bad\u7ec3 SVM \u6a21\u578b<\/strong>: <code>\u4ea4\u6362\u865a\u7535\u8def<\/code> \u7c7b\uff0c\u4f7f\u7528\u7ebf\u6027\u6838\u521b\u5efa SVM \u6a21\u578b\uff0c\u5e76\u5728\u8bad\u7ec3\u6570\u636e\u4e0a\u5bf9\u6a21\u578b\u8fdb\u884c\u8bad\u7ec3\u3002<\/li>\n\n\n\n<li><strong>3D \u53ef\u89c6\u5316<\/strong>: <code>mpl_toolkits.mplot3d.Axes3D<\/code> \u6a21\u5757\u6765\u5b9e\u73b0\u4e09\u7ef4\u53ef\u89c6\u5316\uff0c\u5e76\u5c06 SVM \u8bad\u7ec3\u51fa\u7684\u5206\u7c7b\u8fb9\u754c\u5e73\u9762\u53ef\u89c6\u5316\u3002 <code>ax.plot_surface<\/code> \u7528\u51fd\u6570\u53ef\u89c6\u5316 SVM \u7684\u51b3\u7b56\u8fb9\u754c\u5e73\u9762\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u95ee\u9898\uff08FAQ\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\u9898 1\uff1a SVM \u7684\u51b3\u7b56\u8fb9\u754c\u5728\u4e09\u7ef4\u6570\u636e\u4e2d\u662f\u5982\u4f55\u663e\u793a\u7684\uff1f<\/strong><br>A1. \u5728\u4e09\u7ef4\u6570\u636e\u4e2d\uff0cSVM \u7684\u51b3\u7b56\u8fb9\u754c\u662f\u4e00\u4e2a\u5e73\u9762\u3002\u8be5\u5e73\u9762\u5c06\u4e24\u4e2a\u7c7b\u522b\u5206\u5f00\uff0cSVM \u901a\u8fc7\u6700\u5927\u5316\u8be5\u5e73\u9762\u4e0e\u6700\u8fd1\u6570\u636e\u70b9\uff08\u652f\u6301\u5411\u91cf\uff09\u7684\u8ddd\u79bb\u6765\u5b66\u4e60\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\u9898 2 \u4ec0\u4e48\u662f\u5185\u6838\u51fd\u6570\uff1f<\/strong><br>A2. \u6838\u51fd\u6570\u662f\u5e2e\u52a9 SVM \u5c06\u6570\u636e\u8f6c\u6362\u5230\u66f4\u9ad8\u7ef4\u5ea6\u7a7a\u95f4\u7684\u51fd\u6570\uff0c\u8fd9\u6837 SVM \u5c31\u53ef\u4ee5\u7ebf\u6027\u5206\u79bb\u975e\u7ebf\u6027\u6570\u636e\u3002 \u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u7ebf\u6027\u6838 (<code>\u7ebf\u5f62<\/code>)\uff0c\u4f46\u8fd8\u6709\u8bb8\u591a\u5176\u4ed6\u5185\u6838\u53ef\u7528\uff0c\u5305\u62ec RBF \u5185\u6838\u3001\u591a\u9879\u5f0f\u5185\u6838\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q3. <code>coef_<\/code>\u548c <code>\u62e6\u622a_<\/code>\u662f\uff1f<\/strong><br>A3. <code>coef_<\/code>\u662f SVM \u4e2d\u4ee3\u8868\u51b3\u7b56\u8fb9\u754c\u659c\u7387\u7684\u503c\u3001 <code>\u62e6\u622a_<\/code>\u8868\u793a\u6676\u4f53\u8fb9\u754c\u7684\u622a\u8ddd\u3002\u901a\u8fc7\u8fd9\u4e24\u4e2a\u503c\u53ef\u4ee5\u5b9a\u4e49\u5206\u7c7b\u8fb9\u754c\uff08\u5e73\u9762\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\u9898 4\uff1a \u9664\u4e86\u4e09\u7ef4\u6570\u636e\uff0c\u6211\u8fd8\u80fd\u5c06\u66f4\u9ad8\u7ef4\u5ea6\u7684\u6570\u636e\u53ef\u89c6\u5316\u5417\uff1f<\/strong><br>\u60a8\u6700\u591a\u53ef\u4ee5\u5c06\u4e09\u4e2a\u7ef4\u5ea6\u7684\u6570\u636e\u53ef\u89c6\u5316\uff0c\u4f46\u4e0d\u80fd\u8d85\u8fc7\u56db\u4e2a\u7ef4\u5ea6\u3002 \u4e0d\u8fc7\uff0cSVM \u5728\u5904\u7406\u9ad8\u7ef4\u6570\u636e\u65f6\u975e\u5e38\u5f3a\u5927\u3002\u5728\u5904\u7406\u9ad8\u7ef4\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u964d\u7ef4\u6280\u672f\uff08\u5982 PCA\uff09\u5c06\u5176\u53ef\u89c6\u5316\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95ee\u9898 5\uff1a SVM \u80fd\u5426\u7528\u4e8e\u5bf9\u975e\u7ebf\u6027\u6570\u636e\u8fdb\u884c\u5206\u7c7b\uff1f<\/strong><br>\u7b54 5\uff1a \u662f\u7684\uff0cSVM \u53ef\u4ee5\u4f7f\u7528\u975e\u7ebf\u6027\u6838\uff08\u5982 RBF \u6838\u6216\u591a\u9879\u5f0f\u6838\uff09\u5bf9\u975e\u7ebf\u6027\u6570\u636e\u8fdb\u884c\u5206\u7c7b\u3002\u5373\u4f7f\u662f\u590d\u6742\u7684\u6570\u636e\u5206\u5e03\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u6838\u65b9\u6cd5\u8fdb\u884c\u6709\u6548\u5206\u7c7b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u4f7f\u7528 Python \u5b9e\u73b0\u4e09\u7ef4\u652f\u6301\u5411\u91cf\u673a (SVM) \u5e76\u5c06\u7ed3\u679c\u53ef\u89c6\u5316\u3002 \u53ef\u89c6\u5316\u7684\u7ed3\u679c\u8ba9\u6211\u4eec\u76f4\u89c2\u5730\u4e86\u89e3\u4e86 SVM \u5982\u4f55\u8bbe\u7f6e\u5206\u7c7b\u8fb9\u754c\u5e76\u4ece\u4e09\u7ef4\u6570\u636e\u4e2d\u5b66\u4e60\u3002<br>\u5c06 SVM \u5e94\u7528\u4e8e\u771f\u5b9e\u4e16\u754c\u7684\u6570\u636e\uff0c\u5e76\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u7684\u6838\u51fd\u6570\u6216\u9ad8\u7ef4\u6570\u636e\u8fdb\u4e00\u6b65\u63a2\u7d22 SVM \u7684\u5a01\u529b\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u4e3a\u6570\u636e\u5206\u7c7b\u4e2d\u6700\u5e38\u7528\u7684\u7b97\u6cd5\u4e4b\u4e00\uff0c\u652f\u6301\u5411\u91cf\u673a\uff08Support...<\/p>","protected":false},"author":3,"featured_media":2421,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[7],"tags":[208,212,210,206],"class_list":["post-2420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-coding","tag-sklearn-","tag-svm-3d-","tag-210","tag-206"],"taxonomy_info":{"category":[{"value":7,"label":"\uc778\uacf5\uc9c0\ub2a5(AI)"}],"post_tag":[{"value":208,"label":"Sklearn 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