\u5047\u8bbe\u51fd\u6570\u662f\u9884\u6d4b\u8f93\u51fa\u7684\u6570\u5b66\u8868\u793a\u5f62\u5f0f\uff0c\u8868\u5f81\u4e86\u8f93\u5165\u7279\u5f81\u4e0e\u9884\u6d4b\u7ed3\u679c\u4e4b\u95f4\u7684\u5173\u7cfb<\/strong>\uff0c\u5b83\u662f\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u7684\u6838\u5fc3\uff0c\u7528\u4e8e\u6570\u636e\u7684\u63a8\u65ad\u548c\u9884\u6d4b\u3002\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7\u4f18\u5316\u7b97\u6cd5\u8c03\u6574\u5047\u8bbe\u51fd\u6570\u7684\u53c2\u6570\uff0c\u4ee5\u6700\u5c0f\u5316\u9884\u6d4b\u8bef\u5dee\uff0c\u4ece\u800c\u627e\u5230\u6700\u80fd\u4ee3\u8868\u6570\u636e\u6620\u5c04\u5173\u7cfb\u7684\u5047\u8bbe\u51fd\u6570\u3002<\/p>\n<\/p>\n\u5047\u8bbe\u51fd\u6570\u7684\u91cd\u8981\u6027\u5728\u4e8e\u5b83\u76f4\u63a5\u5f71\u54cd\u6a21\u578b\u7684\u9884\u6d4b\u6027\u80fd\u3002\u4e3a\u4e86\u6df1\u5165\u7406\u89e3\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u660e\u767d\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u57fa\u672c\u5de5\u4f5c\u539f\u7406\uff1a\u6839\u636e\u8f93\u5165\u7684\u7279\u5f81\u503c\uff08\u5982\u4e00\u7ec4\u6570\u636e\u70b9\uff09\u8fdb\u884c\u8ba1\u7b97\uff0c\u5e76\u9884\u6d4b\u51fa\u76f8\u5e94\u7684\u8f93\u51fa\u7ed3\u679c\uff08\u5982\u5206\u7c7b\u6216\u6570\u503c\u9884\u6d4b\uff09\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u5047\u8bbe\u51fd\u6570\u626e\u6f14\u4e86\u7ffb\u8bd1\u5668\u7684\u89d2\u8272\uff0c\u5b83\u89e3\u91ca\u4e86\u8f93\u5165\u548c\u8f93\u51fa\u4e4b\u95f4\u7684\u6570\u5b66\u5173\u7cfb\u3002\u4f8b\u5982\uff0c\u5728\u7ebf\u6027\u56de\u5f52\u6a21\u578b\u4e2d\uff0c\u5047\u8bbe\u51fd\u6570\u901a\u5e38\u8868\u793a\u4e3a\u4e00\u6761\u7ebf\uff08\u6216\u66f4\u9ad8\u7ef4\u5ea6\u7684\u5e73\u9762\uff09\uff0c\u4ee5\u6700\u4f73\u65b9\u5f0f\u62df\u5408\u8f93\u5165\u6570\u636e\u70b9\u548c\u9884\u6d4b\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u5047\u8bbe\u51fd\u6570\u7684\u5b9a\u4e49\u4e0e\u5f62\u5f0f<\/h2>\n<\/p>\n
\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u5047\u8bbe\u51fd\u6570\u662f\u6a21\u578b\u901a\u8fc7\u5b66\u4e60\u6570\u636e\u800c\u5f97\u5230\u7684\u7528\u4e8e\u505a\u51fa\u9884\u6d4b\u7684\u5177\u4f53\u51fd\u6570\u8868\u8fbe\u5f0f\u3002\u901a\u5e38\uff0c\u8fd9\u4e2a\u51fd\u6570\u7684\u5f62\u5f0f\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5b66\u4e60\u4efb\u52a1\uff08\u5982\u56de\u5f52\u3001\u5206\u7c7b\u7b49\uff09\u548c\u6240\u9009\u7528\u7684\u7b97\u6cd5\uff08\u5982\u7ebf\u6027\u56de\u5f52\u3001\u903b\u8f91\u56de\u5f52\u7b49\uff09\u3002<\/p>\n<\/p>\n
\u7ebf\u6027\u56de\u5f52\u4e2d\u7684\u5047\u8bbe\u51fd\u6570<\/h3>\n<\/p>\n
\u5728\u7ebf\u6027\u56de\u5f52\u95ee\u9898\u4e2d\uff0c\u5047\u8bbe\u51fd\u6570\u901a\u5e38\u8868\u793a\u4e3a\u4e00\u6761\u7ebf\u6027\u65b9\u7a0b\uff0c\u5f62\u5f0f\u4e3a (h_\\theta(x) = \\theta_0 + \\theta_1 x_1 + \\cdots + \\theta_n x_n)\uff0c\u5176\u4e2d (x_1, \\cdots, x_n) \u662f\u8f93\u5165\u7279\u5f81\uff0c(\\theta_0, \\theta_1, \\cdots, \\theta_n) \u662f\u6a21\u578b\u53c2\u6570\uff0c\u5176\u76ee\u6807\u662f\u627e\u5230\u6700\u4f73\u7684\u53c2\u6570\u503c\u4ee5\u6700\u5c0f\u5316\u9884\u6d4b\u8bef\u5dee\u3002<\/p>\n<\/p>\n
\u903b\u8f91\u56de\u5f52\u4e2d\u7684\u5047\u8bbe\u51fd\u6570<\/h3>\n<\/p>\n
\u903b\u8f91\u56de\u5f52\u7528\u4e8e\u5904\u7406\u5206\u7c7b\u95ee\u9898\uff0c\u5c24\u5176\u662f\u4e8c\u5206\u7c7b\u95ee\u9898\u3002\u5176\u5047\u8bbe\u51fd\u6570\u7684\u5f62\u5f0f\u901a\u5e38\u662f\u4e00\u4e2aSigmoid\u51fd\u6570\uff0c\u8868\u8fbe\u5f0f\u4e3a (h_\\theta(x) = \\frac{1}{1+e^{-\\theta^T x}})\u3002\u8be5\u51fd\u6570\u7684\u8f93\u51fa\u503c\u4f4d\u4e8e0\u548c1\u4e4b\u95f4\uff0c\u8868\u793a\u6837\u672c\u5c5e\u4e8e\u67d0\u4e00\u7c7b\u7684\u6982\u7387\u3002\u4e0e\u7ebf\u6027\u56de\u5f52\u7c7b\u4f3c\uff0c\u903b\u8f91\u56de\u5f52\u4e5f\u662f\u901a\u8fc7\u8c03\u6574\u53c2\u6570 (\\theta) \u6765\u6700\u5c0f\u5316\u8bef\u5dee\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5047\u8bbe\u51fd\u6570\u7684\u4f18\u5316<\/h2>\n<\/p>\n
\u4e3a\u4e86\u63d0\u9ad8\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u9884\u6d4b\u51c6\u786e\u6027\uff0c\u5fc5\u987b\u5bf9\u5047\u8bbe\u51fd\u6570\u8fdb\u884c\u4f18\u5316\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u6d89\u53ca\u9009\u62e9\u5408\u9002\u7684\u6210\u672c\u51fd\u6570\u5e76\u4f7f\u7528\u7b97\u6cd5\uff08\u5982\u68af\u5ea6\u4e0b\u964d\uff09\u9010\u6b65\u8c03\u6574\u5047\u8bbe\u51fd\u6570\u7684\u53c2\u6570\uff0c\u4ee5\u627e\u5230\u6210\u672c\u51fd\u6570\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<\/p>\n
\u6210\u672c\u51fd\u6570\u7684\u4f5c\u7528<\/h3>\n<\/p>\n
\u6210\u672c\u51fd\u6570\uff08\u6216\u635f\u5931\u51fd\u6570\uff09\u91cf\u5316\u4e86\u5047\u8bbe\u51fd\u6570\u7684\u9884\u6d4b\u503c\u4e0e\u5b9e\u9645\u503c\u4e4b\u95f4\u7684\u5dee\u5f02\u3002\u5728\u7ebf\u6027\u56de\u5f52\u4e2d\uff0c\u5e38\u7528\u7684\u6210\u672c\u51fd\u6570\u662f\u5747\u65b9\u8bef\u5dee\uff0c\u5b83\u8ba1\u7b97\u4e86\u6240\u6709\u9884\u6d4b\u503c\u4e0e\u5b9e\u9645\u503c\u5dee\u5f02\u7684\u5e73\u65b9\u548c\u7684\u5e73\u5747\u503c\u3002\u6210\u672c\u51fd\u6570\u7684\u76ee\u6807\u662f\u901a\u8fc7\u4f18\u5316\u8fc7\u7a0b\u627e\u5230\u6700\u5c0f\u5316\u6210\u672c\u7684\u53c2\u6570\u503c\u3002<\/p>\n<\/p>\n
\u68af\u5ea6\u4e0b\u964d\u7b97\u6cd5<\/h3>\n<\/p>\n
\u68af\u5ea6\u4e0b\u964d\u662f\u6700\u5e38\u7528\u4e8e\u5047\u8bbe\u51fd\u6570\u4f18\u5316\u7684\u7b97\u6cd5\u4e4b\u4e00\u3002\u5b83\u662f\u4e00\u79cd\u8fed\u4ee3\u65b9\u6cd5\uff0c\u901a\u8fc7\u8ba1\u7b97\u6210\u672c\u51fd\u6570\u76f8\u5bf9\u4e8e\u53c2\u6570\u7684\u68af\u5ea6\u5e76\u4e0d\u65ad\u66f4\u65b0\u53c2\u6570\u503c\u6765\u6700\u5c0f\u5316\u6210\u672c\u51fd\u6570\u3002\u4f9d\u636e\u95ee\u9898\u7684\u89c4\u6a21\u548c\u7279\u6027\uff0c\u53ef\u4ee5\u9009\u62e9\u6279\u91cf\u68af\u5ea6\u4e0b\u964d\u3001\u968f\u673a\u68af\u5ea6\u4e0b\u964d\u6216\u5c0f\u6279\u91cf\u68af\u5ea6\u4e0b\u964d\u7248\u672c\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u6a21\u578b\u8bc4\u4f30\u4e0e\u8c03\u6574<\/h2>\n<\/p>\n
\u627e\u5230\u5408\u9002\u7684\u5047\u8bbe\u51fd\u6570\u540e\uff0c\u9700\u8981\u901a\u8fc7\u6a21\u578b\u8bc4\u4f30\u6765\u9a8c\u8bc1\u5176\u9884\u6d4b\u6027\u80fd\u3002\u5e38\u7528\u7684\u8bc4\u4f30\u6307\u6807\u5305\u62ec\u51c6\u786e\u7387\u3001\u53ec\u56de\u7387\u3001F1\u5206\u6570\u7b49\u3002\u6839\u636e\u8bc4\u4f30\u7ed3\u679c\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u4e00\u6b65\u8c03\u6574\u5047\u8bbe\u51fd\u6570\u6216\u6a21\u578b\u53c2\u6570\u3002<\/p>\n<\/p>\n
\u4ea4\u53c9\u9a8c\u8bc1<\/h3>\n<\/p>\n
\u4e3a\u4e86\u66f4\u51c6\u786e\u5730\u8bc4\u4f30\u6a21\u578b\u6027\u80fd\uff0c\u901a\u5e38\u91c7\u7528\u4ea4\u53c9\u9a8c\u8bc1\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u6cd5\u5c06\u6570\u636e\u5206\u4e3a\u591a\u4e2a\u5b50\u96c6\uff0c\u8f6e\u6d41\u4f7f\u7528\u5176\u4e2d\u4e00\u4e2a\u5b50\u96c6\u4f5c\u4e3a\u6d4b\u8bd5\u96c6\uff0c\u5176\u4ed6\u4f5c\u4e3a\u8bad\u7ec3\u96c6\uff0c\u4ece\u800c\u83b7\u5f97\u66f4\u4e3a\u7a33\u5065\u7684\u6027\u80fd\u4f30\u8ba1\u3002<\/p>\n<\/p>\n
\u8d85\u53c2\u6570\u8c03\u6574<\/h3>\n<\/p>\n
\u9664\u4e86\u901a\u8fc7\u4f18\u5316\u7b97\u6cd5\u8c03\u6574\u5047\u8bbe\u51fd\u6570\u53c2\u6570\uff0c\u8fd8\u9700\u8981\u5bf9\u6a21\u578b\u7684\u8d85\u53c2\u6570\u8fdb\u884c\u8c03\u6574\u3002\u8d85\u53c2\u6570\u662f\u5728\u6a21\u578b\u8bad\u7ec3\u524d\u8bbe\u7f6e\u7684\u53c2\u6570\uff0c\u5982\u5b66\u4e60\u7387\u3001\u6b63\u5219\u5316\u7cfb\u6570\u7b49\u3002\u901a\u8fc7\u7f51\u683c\u641c\u7d22\u3001\u968f\u673a\u641c\u7d22\u6216\u8d1d\u53f6\u65af\u4f18\u5316\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u627e\u5230\u6700\u4f18\u7684\u8d85\u53c2\u6570\u8bbe\u7f6e\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u6a21\u578b\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u56db\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
\u5047\u8bbe\u51fd\u6570\u662f\u7406\u89e3\u548c\u6784\u5efa\u673a\u5668\u5b66\u4e60\u6a21\u578b\u7684\u5173\u952e\u6982\u5ff5\u3002\u5b83\u4e0d\u4ec5\u5b9a\u4e49\u4e86\u6a21\u578b\u7684\u6570\u5b66\u5f62\u5f0f\uff0c\u4e5f\u662f\u4f18\u5316\u8fc7\u7a0b\u4e2d\u7684\u4e3b\u8981\u5bf9\u8c61\u3002\u901a\u8fc7\u5bf9\u5047\u8bbe\u51fd\u6570\u53ca\u5176\u53c2\u6570\u7684\u7cbe\u5fc3\u8bbe\u8ba1\u548c\u4f18\u5316\uff0c\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u6a21\u578b\u7684\u9884\u6d4b\u51c6\u786e\u6027\u548c\u6cdb\u5316\u80fd\u529b\u3002\u56e0\u6b64\uff0c\u6df1\u5165\u7406\u89e3\u5047\u8bbe\u51fd\u6570\u7684\u5b9a\u4e49\u3001\u5f62\u5f0f\u548c\u4f18\u5316\u65b9\u6cd5\u5bf9\u673a\u5668\u5b66\u4e60\u5b9e\u8df5\u8005\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n1. \u673a\u5668\u5b66\u4e60\u4e2d\uff0chypothesis\u662f\u6307\u4ec0\u4e48\uff1f<\/strong><\/p>\n\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0chypothesis\u6307\u7684\u662f\u4e00\u4e2a\u5047\u8bbe\uff0c\u5b83\u662f\u5bf9\u6570\u636e\u7684\u4e00\u79cd\u63a8\u6d4b\u6216\u731c\u6d4b\uff0c\u5b83\u8bd5\u56fe\u63cf\u8ff0\u6570\u636e\u96c6\u4e2d\u7684\u7279\u5f81\u548c\u6a21\u5f0f\u3002\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u7684\u7b97\u6cd5\u548c\u6a21\u578b\uff0c\u6211\u4eec\u53ef\u4ee5\u6784\u5efa\u4e0d\u540c\u7684hypothesis\uff0c\u8fd9\u4e9bhypothesis\u53ef\u4ee5\u7528\u6765\u8fdb\u884c\u6570\u636e\u9884\u6d4b\u548c\u51b3\u7b56\u3002<\/p>\n
2. \u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u5982\u4f55\u6784\u5efa\u4e00\u4e2ahypothesis\uff1f<\/strong><\/p>\n\u6784\u5efa\u4e00\u4e2ahypothesis\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u5148\u9009\u62e9\u4e00\u4e2a\u9002\u5408\u7684\u6a21\u578b\u548c\u7b97\u6cd5\u3002\u7136\u540e\uff0c\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u6a21\u578b\u7684\u53c2\u6570\u548c\u7279\u5f81\uff0c\u8fd9\u4e9b\u53c2\u6570\u548c\u7279\u5f81\u5c06\u5f71\u54cdhypothesis\u7684\u751f\u6210\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8bad\u7ec3\u6570\u636e\u6765\u201c\u8bad\u7ec3\u201d\u6a21\u578b\uff0c\u5373\u901a\u8fc7\u8c03\u6574\u53c2\u6570\u548c\u7279\u5f81\u7684\u6570\u503c\uff0c\u4e0d\u65ad\u4f18\u5316\u6a21\u578b\uff0c\u4f7f\u5176\u80fd\u591f\u66f4\u597d\u5730\u62df\u5408\u8bad\u7ec3\u6570\u636e\u3002\u6700\u7ec8\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6a21\u578b\u6765\u9884\u6d4b\u65b0\u7684\u672a\u77e5\u6570\u636e\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u5206\u7c7b\u3001\u56de\u5f52\u6216\u8005\u5176\u4ed6\u4efb\u52a1\u3002<\/p>\n
3. \u4e3a\u4ec0\u4e48\u6784\u5efa\u4e00\u4e2a\u51c6\u786e\u7684hypothesis\u5728\u673a\u5668\u5b66\u4e60\u4e2d\u5f88\u91cd\u8981\uff1f<\/strong><\/p>\n\u6784\u5efa\u4e00\u4e2a\u51c6\u786e\u7684hypothesis\u5728\u673a\u5668\u5b66\u4e60\u4e2d\u975e\u5e38\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5f71\u54cd\u5230\u6211\u4eec\u5bf9\u6570\u636e\u7684\u7406\u89e3\u548c\u9884\u6d4b\u7684\u51c6\u786e\u5ea6\u3002\u4e00\u4e2a\u51c6\u786e\u7684hypothesis\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u89e3\u91ca\u6570\u636e\u7684\u6a21\u5f0f\u548c\u7279\u5f81\uff0c\u5e76\u4e14\u80fd\u591f\u5728\u65b0\u7684\u672a\u77e5\u6570\u636e\u4e0a\u8fdb\u884c\u51c6\u786e\u7684\u9884\u6d4b\u3002\u800c\u5982\u679chypothesis\u4e0d\u51c6\u786e\uff0c\u90a3\u4e48\u6211\u4eec\u7684\u9884\u6d4b\u7ed3\u679c\u53ef\u80fd\u4f1a\u51fa\u73b0\u504f\u5dee\uff0c\u5e76\u4e14\u65e0\u6cd5\u5f97\u5230\u51c6\u786e\u7684\u7ed3\u8bba\u3002\u56e0\u6b64\uff0c\u6784\u5efa\u4e00\u4e2a\u51c6\u786e\u7684hypothesis\u662f\u673a\u5668\u5b66\u4e60\u4e2d\u7684\u91cd\u8981\u73af\u8282\uff0c\u4e5f\u662f\u53d6\u5f97\u597d\u7684\u6a21\u578b\u6027\u80fd\u7684\u5173\u952e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u673a\u5668\u5b66\u4e60\u4e2d\uff0c\u5047\u8bbe\uff08Hypothesis\uff09\u662f\u4e00\u4e2a\u6a21\u578b\u5bf9\u4e8e\u7ed9\u5b9a\u6570\u636e\u6240\u505a\u51fa\u7684\u9884\u6d4b\u51fd\u6570\u3002\u5047\u8bbe\u51fd\u6570\u662f\u9884\u6d4b\u8f93\u51fa\u7684\u6570\u5b66\u8868\u793a […]","protected":false},"author":3,"featured_media":187667,"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\/187662"}],"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=187662"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/187662\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/187667"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=187662"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=187662"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=187662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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