{"id":186769,"date":"2024-05-09T15:33:33","date_gmt":"2024-05-09T07:33:33","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/186769.html"},"modified":"2024-05-09T15:33:35","modified_gmt":"2024-05-09T07:33:35","slug":"%e6%b1%82%e8%a7%a3%e6%9c%ba%e5%99%a8%e5%ad%a6%e4%b9%a0svm%e5%86%85%e6%a0%b8%ef%bc%8c%e5%85%b7%e4%bd%93%e6%80%8e%e4%b9%88%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/186769.html","title":{"rendered":"\u6c42\u89e3\u673a\u5668\u5b66\u4e60SVM\u5185\u6838\uff0c\u5177\u4f53\u600e\u4e48\u64cd\u4f5c"},"content":{"rendered":"

\"\u6c42\u89e3\u673a\u5668\u5b66\u4e60SVM\u5185\u6838\uff0c\u5177\u4f53\u600e\u4e48\u64cd\u4f5c\"<\/p>\n

\u6c42\u89e3\u673a\u5668\u5b66\u4e60<\/a>\u4e2d\u7684Support Vector Machine\uff08SVM\uff09\u5185\u6838\uff0c\u4e3b\u8981\u6d89\u53ca\u9009\u62e9\u5408\u9002\u7684\u5185\u6838\u51fd\u6570\u3001\u53c2\u6570\u8c03\u4f18\u548c\u6a21\u578b\u8bad\u7ec3\u3002\u6838\u5fc3\u64cd\u4f5c\u5305\u62ec\uff1a\u9009\u62e9\u5408\u9002\u7684SVM\u5185\u6838\u51fd\u6570\u3001\u8c03\u4f18\u5185\u6838\u53c2\u6570\u3001\u8fdb\u884c\u6a21\u578b\u8bad\u7ec3\u548c\u9a8c\u8bc1<\/strong>\u3002\u8fd9\u4e9b\u6b65\u9aa4\u662f\u5b9e\u73b0\u9ad8\u6548\u3001\u9ad8\u7cbe\u5ea6SVM\u6a21\u578b\u7684\u5173\u952e\u3002\u5176\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684SVM\u5185\u6838\u51fd\u6570<\/strong>\u662f\u6700\u521d\u4e5f\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65\uff0c\u56e0\u4e3a\u5185\u6838\u51fd\u6570\u7684\u9009\u62e9\u76f4\u63a5\u51b3\u5b9a\u4e86\u6570\u636e\u5728\u65b0\u7279\u5f81\u7a7a\u95f4\u7684\u5206\u5e03\uff0c\u8fdb\u800c\u5f71\u54cd\u5206\u7c7b\u7684\u51c6\u786e\u6027\u548c\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002\u5e38\u89c1\u7684SVM\u5185\u6838\u51fd\u6570\u5305\u62ec\u7ebf\u6027\u5185\u6838\u3001\u591a\u9879\u5f0f\u5185\u6838\u3001\u5f84\u5411\u57fa\uff08RBF\uff09\u5185\u6838\u548csigmoid\u5185\u6838\u7b49\uff0c\u4e0d\u540c\u7684\u5185\u6838\u51fd\u6570\u9002\u7528\u4e8e\u4e0d\u540c\u5206\u5e03\u7279\u6027\u7684\u6570\u636e\u96c6\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u9009\u62e9\u5408\u9002\u7684SVM\u5185\u6838\u51fd\u6570<\/h3>\n<\/p>\n

\u5728\u8fdb\u884cSVM\u6a21\u578b\u6784\u5efa\u65f6\uff0c\u9996\u5148\u9700\u8981\u6839\u636e\u6570\u636e\u96c6\u7684\u7279\u6027\u9009\u62e9\u4e00\u4e2a\u5408\u9002\u7684\u5185\u6838\u51fd\u6570\u3002\u4e0d\u540c\u7684\u5185\u6838\u51fd\u6570\u5b9a\u4e49\u4e86\u4e0d\u540c\u7684\u6570\u636e\u6620\u5c04\u7b56\u7565\uff0c\u8fd9\u5c06\u5f71\u54cd\u6a21\u578b\u7684\u8bad\u7ec3\u6548\u679c\u548c\u6cdb\u5316\u80fd\u529b\u3002<\/p>\n<\/p>\n

    \n
  • \n

    \u7ebf\u6027\u5185\u6838<\/strong>\u662f\u6700\u7b80\u5355\u7684\u4e00\u79cd\u5185\u6838\uff0c\u9002\u7528\u4e8e\u7ebf\u6027\u53ef\u5206\u7684\u6570\u636e\u96c6\u3002\u5b83\u7684\u8ba1\u7b97\u901f\u5ea6\u5feb\uff0c\u9002\u5408\u4e8e\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u96c6\u3002\u5f53\u6570\u636e\u96c6\u7684\u7279\u5f81\u6570\u8fdc\u5927\u4e8e\u6837\u672c\u6570\u65f6\uff0c\u7ebf\u6027\u5185\u6838\u5c24\u4e3a\u6709\u6548\u3002<\/p>\n<\/p>\n<\/li>\n

  • \n

    \u591a\u9879\u5f0f\u5185\u6838<\/strong>\u5219\u53ef\u4ee5\u5c06\u6570\u636e\u6620\u5c04\u5230\u66f4\u9ad8\u7ef4\u7684\u7a7a\u95f4\uff0c\u901a\u8fc7\u8c03\u6574\u591a\u9879\u5f0f\u7684\u5ea6\u6765\u63a7\u5236\u6620\u5c04\u7684\u590d\u6742\u5ea6\u3002\u5b83\u9002\u7528\u4e8e\u975e\u7ebf\u6027\u95ee\u9898\uff0c\u4f46\u662f\u9700\u8981\u4ed4\u7ec6\u8c03\u6574\u5ea6\u53c2\u6570\u548c\u5176\u4ed6\u53c2\u6570\uff0c\u4ee5\u907f\u514d\u8fc7\u5ea6\u62df\u5408\u3002<\/p>\n<\/p>\n<\/li>\n

  • \n

    \u5f84\u5411\u57fa\uff08RBF\uff09\u5185\u6838<\/strong>\u662f\u4e00\u79cd\u66f4\u52a0\u901a\u7528\u7684\u5185\u6838\uff0c\u9002\u7528\u4e8e\u591a\u6570\u975e\u7ebf\u6027\u95ee\u9898\u3002\u5b83\u53ef\u4ee5\u6620\u5c04\u51fa\u66f4\u52a0\u590d\u6742\u7684\u51b3\u7b56\u8fb9\u754c\uff0c\u4f46\u662f\u540c\u65f6\u4e5f\u66f4\u52a0\u5bb9\u6613\u53d7\u5230\u53c2\u6570\u5f71\u54cd\uff0c\u9700\u8981\u4ed4\u7ec6\u8c03\u6574\u3002<\/p>\n<\/p>\n<\/li>\n

  • \n

    Sigmoid\u5185\u6838<\/strong>\u867d\u7136\u8f83\u5c11\u4f7f\u7528\uff0c\u4f46\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\u53ef\u4ee5\u6a21\u62df\u795e\u7ecf\u7f51\u7edc\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n

    \u9009\u62e9\u5185\u6838\u51fd\u6570\u7684\u8fc7\u7a0b\uff0c\u901a\u5e38\u9700\u8981\u57fa\u4e8e\u5b9e\u9a8c\u6bd4\u8f83\u4e0d\u540c\u5185\u6838\u51fd\u6570\u5728\u7279\u5b9a\u6570\u636e\u96c6\u4e0a\u7684\u6027\u80fd\uff0c\u4ee5\u786e\u5b9a\u6700\u9002\u5408\u8be5\u95ee\u9898\u7684\u5185\u6838\u7c7b\u578b\u3002<\/p>\n<\/p>\n

    \u4e8c\u3001\u8c03\u4f18\u5185\u6838\u53c2\u6570<\/h3>\n<\/p>\n

    \u627e\u5230\u5408\u9002\u7684\u5185\u6838\u51fd\u6570\u540e\uff0c\u4e0b\u4e00\u6b65\u662f\u8c03\u4f18\u5185\u6838\u53c2\u6570\u3002\u8fd9\u4e00\u6b65\u9aa4\u5bf9\u4e8eSVM\u6a21\u578b\u7684\u6027\u80fd\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u4e0d\u540c\u7684\u53c2\u6570\u8bbe\u7f6e\u4f1a\u5bfc\u81f4\u6a21\u578b\u6027\u80fd\u7684\u663e\u8457\u5dee\u5f02\u3002<\/p>\n<\/p>\n

      \n
    • \n

      \u5bf9\u4e8e\u7ebf\u6027\u5185\u6838<\/strong>\uff0c\u4e3b\u8981\u7684\u8c03\u4f18\u53c2\u6570\u662f\u6b63\u5219\u5316\u53c2\u6570C\uff0c\u5b83\u63a7\u5236\u7740\u6a21\u578b\u7684\u590d\u6742\u5ea6\u4e0e\u62df\u5408\u7a0b\u5ea6\u4e4b\u95f4\u7684\u5e73\u8861\u3002<\/p>\n<\/p>\n<\/li>\n

    • \n

      \u5bf9\u4e8e\u591a\u9879\u5f0f\u5185\u6838<\/strong>\uff0c\u9664\u4e86C\u53c2\u6570\u5916\uff0c\u8fd8\u9700\u8981\u8c03\u6574\u5ea6\u53c2\u6570\uff08degree\uff09\u3001\u7cfb\u6570gamma\u548c\u5e38\u6570\u9879coef0\u3002<\/p>\n<\/p>\n<\/li>\n

    • \n

      \u5bf9\u4e8eRBF\u5185\u6838<\/strong>\uff0c\u6700\u91cd\u8981\u7684\u53c2\u6570\u662fgamma\uff0c\u5b83\u63a7\u5236\u4e86\u5355\u4e2a\u8bad\u7ec3\u6837\u672c\u5f71\u54cd\u7684\u8303\u56f4\uff0c\u5f71\u54cd\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n

      \u53c2\u6570\u8c03\u4f18\u901a\u5e38\u91c7\u7528\u4ea4\u53c9\u9a8c\u8bc1\u7684\u65b9\u5f0f\uff0c\u4f8b\u5982\u7f51\u683c\u641c\u7d22\uff08Grid Search\uff09\u6216\u968f\u673a\u641c\u7d22\uff08Random Search\uff09\uff0c\u6765\u627e\u5230\u6700\u4f18\u7684\u53c2\u6570\u7ec4\u5408\u3002<\/p>\n<\/p>\n

      \u4e09\u3001\u8fdb\u884c\u6a21\u578b\u8bad\u7ec3\u548c\u9a8c\u8bc1<\/h3>\n<\/p>\n

      \u53c2\u6570\u786e\u5b9a\u540e\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884c\u6a21\u578b\u7684\u8bad\u7ec3\u4e86\u3002\u8bad\u7ec3SVM\u6a21\u578b\u4e3b\u8981\u662f\u89e3\u51b3\u4f18\u5316\u95ee\u9898\uff0c\u627e\u5230\u6700\u4f73\u7684\u51b3\u7b56\u8fb9\u754c\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u9700\u8981\u4f7f\u7528\u5230\u6c42\u89e3\u5668\uff08\u5982SMO\u7b97\u6cd5\uff09\uff0c\u5b83\u53ef\u4ee5\u9ad8\u6548\u5730\u5904\u7406\u5927\u578b\u4f18\u5316\u95ee\u9898\u3002<\/p>\n<\/p>\n

      \u5728\u6a21\u578b\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u9664\u4e86\u76d1\u63a7\u8bad\u7ec3\u7cbe\u5ea6\uff0c\u66f4\u91cd\u8981\u7684\u662f\u901a\u8fc7\u9a8c\u8bc1\u96c6\u6765\u76d1\u63a7\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002\u53ea\u6709\u9a8c\u8bc1\u96c6\u4e0a\u7684\u6027\u80fd\u6ee1\u610f\uff0c\u6a21\u578b\u624d\u7b97\u662f\u771f\u6b63\u6709\u6548\u3002<\/p>\n<\/p>\n

      \u56db\u3001\u7efc\u5408\u5e94\u7528\u548c\u8fdb\u9636<\/h3>\n<\/p>\n

      \u5c06\u4e0a\u8ff0\u6b65\u9aa4\u7efc\u5408\u8d77\u6765\uff0c\u6784\u5efa\u4e00\u4e2a\u9ad8\u6548\u7387\u3001\u9ad8\u7cbe\u5ea6\u7684SVM\u6a21\u578b\uff0c\u5c31\u9700\u8981\u5728\u5b9e\u9a8c\u4e2d\u4e0d\u65ad\u5c1d\u8bd5\u3001\u8c03\u6574\u3002\u540c\u65f6\uff0c\u5bf9\u4e8e\u8fdb\u9636\u7528\u6237\uff0c\u5728\u7406\u89e3\u4e86\u57fa\u7840\u77e5\u8bc6\u540e\uff0c\u8fd8\u53ef\u4ee5\u63a2\u7d22SVM\u5728\u5404\u79cd\u590d\u6742\u573a\u666f\u4e0b\u7684\u5e94\u7528\uff0c\u5982\u591a\u7c7b\u5206\u7c7b\u3001\u81ea\u7136\u8bed\u8a00\u5904\u7406\u3001\u56fe\u50cf\u8bc6\u522b\u7b49\u3002<\/p>\n<\/p>\n

      \u6b64\u5916\uff0c\u6df1\u5165\u7406\u89e3\u6a21\u578b\u539f\u7406\u3001\u5b66\u4e60\u9ad8\u7ea7\u4f18\u5316\u6280\u672f\u548c\u5e76\u884c\u8ba1\u7b97\u7b49\uff0c\u4e5f\u662f\u63d0\u5347\u6a21\u578b\u6027\u80fd\u548c\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u96c6\u7684\u5173\u952e\u3002<\/p>\n<\/p>\n

      \u901a\u8fc7\u5bf9\u8fd9\u4e9b\u6838\u5fc3\u6982\u5ff5\u7684\u6df1\u5165\u638c\u63e1\u548c\u5b9e\u8df5\u5e94\u7528\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5728\u5404\u79cd\u673a\u5668\u5b66\u4e60\u4efb\u52a1\u4e2d\u5e94\u7528SVM\uff0c\u4ece\u800c\u6784\u5efa\u51fa\u6027\u80fd\u4f18\u79c0\u7684\u9884\u6d4b\u6a21\u578b\u3002<\/p>\n<\/p>\n

      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

      Q: SVM\u5185\u6838\u6709\u54ea\u4e9b\u79cd\u7c7b\uff1f\u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u5185\u6838\uff1f<\/strong><\/p>\n

      A: SVM\u5185\u6838\u4e3b\u8981\u5305\u62ec\u7ebf\u6027\u6838\u3001\u591a\u9879\u5f0f\u6838\u3001\u5f84\u5411\u57fa\u51fd\u6570(RBF)\u6838\u548csigmoid\u6838\u3002\u9009\u62e9\u5408\u9002\u7684\u5185\u6838\u5e94\u6839\u636e\u6570\u636e\u7684\u7279\u5f81\u548c\u95ee\u9898\u7684\u9700\u6c42\u8fdb\u884c\u5224\u65ad\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6570\u636e\u662f\u7ebf\u6027\u53ef\u5206\u7684\uff0c\u53ef\u4ee5\u9009\u62e9\u7ebf\u6027\u6838\uff1b\u5982\u679c\u6570\u636e\u7684\u7279\u5f81\u975e\u7ebf\u6027\uff0c\u53ef\u4ee5\u9009\u62e9\u591a\u9879\u5f0f\u6838\u6216RBF\u6838\u8fdb\u884c\u66f4\u597d\u7684\u62df\u5408\uff1b\u800csigmoid\u6838\u5219\u9002\u7528\u4e8e\u7279\u6b8a\u7684\u975e\u7ebf\u6027\u95ee\u9898\u3002<\/p>\n

      Q: \u4f7f\u7528SVM\u5185\u6838\u65f6\uff0c\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u8c03\u4f18\uff1f<\/strong><\/p>\n

      A: \u5728\u4f7f\u7528SVM\u5185\u6838\u65f6\uff0c\u5e38\u5e38\u9700\u8981\u8c03\u4f18\u53c2\u6570\u3002\u5bf9\u4e8e\u4e0d\u540c\u7684\u5185\u6838\u7c7b\u578b\uff0c\u53c2\u6570\u7684\u8c03\u4f18\u65b9\u5f0f\u4e5f\u4e0d\u540c\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u591a\u9879\u5f0f\u6838\u548cRBF\u6838\uff0c\u9700\u8981\u8c03\u6574\u7684\u53c2\u6570\u5305\u62ec\u6838\u51fd\u6570\u7684\u5ea6\uff08degree\uff09\u548c\u60e9\u7f5a\u53c2\u6570\uff08C\uff09\uff0c\u800c\u5bf9\u4e8esigmoid\u6838\uff0c\u9700\u8981\u8c03\u6574\u7684\u53c2\u6570\u8fd8\u5305\u62ec\u6838\u51fd\u6570\u7684\u659c\u7387\uff08gamma\uff09\u548c\u60e9\u7f5a\u53c2\u6570\uff08C\uff09\u3002\u5e38\u7528\u7684\u8c03\u4f18\u65b9\u6cd5\u5305\u62ec\u7f51\u683c\u641c\u7d22\u548c\u4ea4\u53c9\u9a8c\u8bc1\u3002<\/p>\n

      Q: SVM\u5185\u6838\u5bf9\u4e8e\u9ad8\u7ef4\u6570\u636e\u6709\u4ec0\u4e48\u4f18\u52bf\uff1f\u5982\u4f55\u5904\u7406\u9ad8\u7ef4\u6570\u636e\u7684\u7279\u5f81\u9009\u62e9\u95ee\u9898\uff1f<\/strong><\/p>\n

      A: SVM\u5185\u6838\u5bf9\u4e8e\u9ad8\u7ef4\u6570\u636e\u5177\u6709\u8f83\u597d\u7684\u9002\u5e94\u6027\u3002\u5728\u5904\u7406\u9ad8\u7ef4\u6570\u636e\u65f6\uff0c\u7279\u5f81\u9009\u62e9\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u95ee\u9898\u3002\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u7279\u5f81\u9009\u62e9\u7b97\u6cd5\uff0c\u5982\u76f8\u5173\u6027\u5206\u6790\u3001\u5361\u65b9\u68c0\u9a8c\u3001\u4fe1\u606f\u589e\u76ca\u7b49\uff0c\u7b5b\u9009\u51fa\u5bf9\u76ee\u6807\u53d8\u91cf\u5177\u6709\u91cd\u8981\u5f71\u54cd\u7684\u7279\u5f81\u3002\u53e6\u5916\uff0c\u5982\u679c\u7279\u5f81\u7ef4\u5ea6\u8fc7\u9ad8\uff0c\u8fd8\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u4e3b\u6210\u5206\u5206\u6790(PCA)\u6216\u7ebf\u6027\u5224\u522b\u5206\u6790(LDA)\u7b49\u964d\u7ef4\u65b9\u6cd5\uff0c\u5c06\u9ad8\u7ef4\u7279\u5f81\u8f6c\u6362\u4e3a\u4f4e\u7ef4\u7279\u5f81\uff0c\u4ee5\u63d0\u9ad8\u6a21\u578b\u7684\u6cdb\u5316\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u6c42\u89e3\u673a\u5668\u5b66\u4e60\u4e2d\u7684Support Vector Machine\uff08SVM\uff09\u5185\u6838\uff0c\u4e3b\u8981\u6d89\u53ca\u9009\u62e9\u5408\u9002\u7684\u5185\u6838\u51fd\u6570\u3001\u53c2\u6570\u8c03 […]","protected":false},"author":3,"featured_media":186770,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/186769"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=186769"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/186769\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/186770"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=186769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=186769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=186769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}