{"id":20736,"date":"2026-05-08T13:23:34","date_gmt":"2026-05-08T05:23:34","guid":{"rendered":"https:\/\/92it.top\/?p=20736"},"modified":"2026-05-08T13:23:34","modified_gmt":"2026-05-08T05:23:34","slug":"%e6%af%8f%e5%a4%a9%e5%90%83%e9%80%8f%e4%b8%80%e4%b8%aaai%e7%9f%a5%e8%af%86%e7%82%b9_%e9%99%8d%e7%bb%b4","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=20736","title":{"rendered":"\u6bcf\u5929\u5403\u900f\u4e00\u4e2aAI\u77e5\u8bc6\u70b9_\u964d\u7ef4"},"content":{"rendered":"\n

\u8f6c\u8f7d\uff1a\u5c0f\u7ea2\u4e66 AI\u4ea7\u54c1\u8d75\u54e5<\/p>\n\n\n\n

\u524d\u8a00\ud83d\udd16<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u6709\u6ca1\u6709\u89c9\u5f97\uff0c\u6211\u4eec\u751f\u6d3b\u5728\u4e00\u4e2a\u4fe1\u606f\u7206\u70b8\u7684\u65f6\u4ee3\uff1f\u624b\u673a\u91cc APP \u4e0a\u5343\u4e2a\uff0c\u8863\u67dc\u91cc\u8863\u670d\u51e0\u767e\u4ef6\uff0c\u60f3\u627e\u4e2a\u4e1c\u897f\u5f97\u7ffb\u534a\u5929\u3002<\/p>\n\n\n\n

\u5176\u5b9e\uff0cAI \u4e5f\u9762\u4e34\u7740\u540c\u6837\u7684\u70e6\u607c\uff01\u5728\u8bad\u7ec3 AI \u6a21\u578b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5582\u7ed9\u5b83\u7684\u6570\u636e\uff0c\u7279\u5f81\uff08\u4e5f\u5c31\u662f\u63cf\u8ff0\u4e00\u4e2a\u4e1c\u897f\u7684\u5c5e\u6027\uff09\u53ef\u80fd\u6709\u6210\u767e\u4e0a\u5343\u4e2a\uff0c\u8fd9\u5728\u672f\u8bed\u91cc\u5c31\u53eb\u9ad8\u7ef4\u6570\u636e<\/strong>\u3002<\/p>\n\n\n\n

\u6570\u636e\u7ef4\u5ea6\u592a\u591a\uff0c\u5c31\u50cf\u4e00\u4e2a\u5806\u6ee1\u6742\u7269\u7684\u623f\u95f4\uff0c\u4e0d\u4ec5\u4e71\uff0c\u8fd8\u627e\u4e0d\u7740\u91cd\u70b9\uff0c\u751a\u81f3\u4f1a\u8ba9 AI \u5f88\u61f5\u903c\uff01<\/p>\n\n\n\n

\u8fd9\u4e2a\u65f6\u5019\uff0cAI \u8bed\u6599\u7684\u6570\u636e\u9a9a\u64cd\u4f5c\u6765\u4e86 \u2014\u2014\u964d\u7ef4\uff08Dimensionality Reduction\uff09<\/strong>\uff0c\u5c31\u662f\u6559 AI \u5982\u4f55\u505a\u4e00\u6b21\u5f7b\u5e95\u7684\u6570\u636e\u65ad\u820d\u79bb<\/strong>\uff0c\u6254\u6389\u65e0\u7528\u7684\u4fe1\u606f\uff0c\u7559\u4e0b\u771f\u6b63\u9700\u8981\u7684\u3002\u8fd9\u4e0d\u4ec5\u80fd\u8ba9 AI \u8dd1\u5f97\u66f4\u5feb\uff0c\u800c\u4e14\u66f4\u806a\u660e\uff01<\/p>\n\n\n\n

\u5177\u4f53\u600e\u4e48\u505a\u65ad\u820d\u79bb\uff1f\u5927\u5bb6\u51c6\u5907\u597d\uff0c\u54b1\u4eec\u5c31\u53d1\u8f66\u4e86\uff01\uff01\uff01<\/p>\n\n\n\n

\u3000\u3000<\/p>\n\n\n\n

\u4e00\u3001\u5230\u5e95\u5565\u662f \u201c\u7ef4\u201d\uff1f\u4e3a\u5565\u8981 \u201c\u964d\u201d\uff1f\ud83d\udd16<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u5728\u804a\u964d\u7ef4\u4e4b\u524d\uff0c\u6211\u4eec\u5f97\u5148\u641e\u61c2\u4e24\u4e2a\u57fa\u672c\u95ee\u9898\u3002<\/p>\n\n\n\n

\ud83d\udd391. \u7ef4\u5ea6\uff08Dimension\uff09\u5230\u5e95\u662f\u4e2a\u5565\uff1f<\/strong><\/p>\n\n\n\n

\u522b\u88ab\u5413\u5230\u3002\u5728\u673a\u5668\u5b66\u4e60\u91cc\uff0c\u4e00\u4e2a\u7ef4\u5ea6\u5c31\u662f\u4e00\u4e2a\u7279\u5f81\uff08Feature\uff09<\/strong>\u3002<\/p>\n\n\n\n

\u4e3e\u4e2a\u6817\u5b50\ud83e\udeb6\uff1a<\/p>\n\n\n\n

\u6211\u4eec\u60f3\u9884\u6d4b\u4e00\u5957\u623f\u5b50\u7684\u4ef7\u683c\u3002\u6211\u4eec\u4f1a\u6536\u96c6\u54ea\u4e9b\u4fe1\u606f\u5462\uff1f<\/p>\n\n\n\n

\u7279\u5f81 1\uff1a\u9762\u79ef\uff08\u5e73\u65b9\u7c73\uff09\n\u7279\u5f81 2\uff1a\u623f\u95f4\u6570\uff08\u4e2a\uff09\n\u7279\u5f81 3\uff1a\u697c\u5c42\n\u7279\u5f81 4\uff1a\u79bb\u5730\u94c1\u7ad9\u8ddd\u79bb\uff08\u7c73\uff09\n\u7279\u5f81 5\uff1a\u623f\u9f84\uff08\u5e74\uff09\n\u2026\u2026\n\u7279\u5f81 100\uff1a\u5c0f\u533a\u7eff\u5316\u7387\uff08%\uff09<\/pre>\n\n\n\n
\u8fd9\u91cc\uff0c\u6bcf\u4e00\u4e2a\u7279\u5f81\uff08\u9762\u79ef\u3001\u623f\u9f84\u2026\u2026\uff09\u5c31\u662f\u4e00\u4e2a\u7ef4\u5ea6\u3002\u5982\u679c\u6211\u4eec\u6536\u96c6\u4e86 100 \u4e2a\u7279\u5f81\uff0c\u90a3\u6211\u4eec\u7684\u6570\u636e\u5c31\u662f 100 \u7ef4\u7684\u3002\u662f\u4e0d\u662f\u77ac\u95f4\u5c31\u7406\u89e3\u4e86\uff1f<\/p>\n\n\n\n
\ud83d\udca1 \u7ef4\u5ea6\u5c31\u662f\u63cf\u8ff0\u4e00\u4e2a\u4e8b\u7269\u7684\u4e0d\u540c\u89d2\u5ea6\u3002<\/p>\n\n\n\n
\u3000\u3000<\/p>\n\n\n\n
\ud83d\udd392. \u4e3a\u5565\u975e\u8981\u964d\u7ef4\uff1f\u7ef4\u5ea6\u9ad8\u4e0d\u597d\u5417\uff1f\uff08\u7ef4\u5ea6\u707e\u96be\uff09<\/strong><\/p>\n\n\n\n
\u4f60\u53ef\u80fd\u4f1a\u60f3\uff0c\u63cf\u8ff0\u4e00\u4e2a\u4e1c\u897f\u7684\u7279\u5f81\u8d8a\u591a\uff0c\u4fe1\u606f\u4e0d\u5c31\u8d8a\u5168\u5417\uff1fAI \u4e0d\u5c31\u5b66\u5f97\u8d8a\u597d\u5417\uff1f<\/p>\n\n\n\n
\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u662f\u8fd9\u6837\u3002\u4f46\u5f53\u7ef4\u5ea6\u9ad8\u5230\u4e00\u5b9a\u7a0b\u5ea6\u540e\uff0c\u5c31\u4f1a\u5f15\u53d1\u4e00\u573a\u7ef4\u5ea6\u707e\u96be\uff08Curse of Dimensionality\uff09<\/strong>\u3002<\/p>\n\n\n\n
\u8fd9\u53c8\u662f\u4e2a\u542c\u8d77\u6765\u5f88\u53ef\u6015\u7684\u8bcd\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u7528\u4e00\u4e2a\u6bd4\u55bb<\/strong>\u6765\u7406\u89e3\u5b83\uff1a<\/p>\n\n\n\n
\u60f3\u8c61\u4e00\u4e0b\uff0c\u4f60\u5728\u4e00\u6761\u4e00\u7ef4\u7684\u7ebf\u4e0a\u627e\u670b\u53cb\uff0c\u5f88\u7b80\u5355\uff0c\u5c31\u5728\u4f60\u524d\u540e\u3002
\u73b0\u5728\uff0c\u4f60\u5728\u4e00\u4e2a\u4e8c\u7ef4\u7684\u5e7f\u573a\u4e0a\u627e\u670b\u53cb\uff0c\u8303\u56f4\u53d8\u5927\u4e86\uff0c\u96be\u5ea6\u589e\u52a0\u4e86\u70b9\u3002
\u7136\u540e\uff0c\u4f60\u5728\u4e00\u4e2a\u4e09\u7ef4\u7684\u5927\u697c\u91cc\u627e\u670b\u53cb\uff0c\u4f60\u4e0d\u4ec5\u8981\u8003\u8651\u524d\u540e\u5de6\u53f3\uff0c\u8fd8\u8981\u8003\u8651\u697c\u4e0a\u697c\u4e0b\uff0c\u96be\u5ea6\u5267\u589e\u3002
\u518d\u60f3\u8c61\u4e00\u4e0b\uff0c\u5728\u4e00\u4e2a 1000 \u7ef4\u7684\u8d85\u7a7a\u95f4\u91cc\u5462\uff1f<\/pre>\n\n\n\n
\u5728\u9ad8\u7ef4\u7a7a\u95f4\u91cc\uff0c\u6240\u6709\u7684\u6570\u636e\u70b9\u90fd\u50cf\u662f\u5b87\u5b99\u91cc\u5b64\u72ec\u7684\u661f\u661f\uff0c\u5f7c\u6b64\u4e4b\u95f4\u7684\u8ddd\u79bb\u90fd\u53d8\u5f97\u975e\u5e38\u9065\u8fdc\uff0c\u800c\u4e14\u90fd\u5dee\u4e0d\u591a\u8fdc\u3002<\/p>\n\n\n
\n
\"\"<\/figure><\/div>\n\n\n
\u3000\u3000<\/p>\n\n\n\n
\u4e8c\u3001\u964d\u7ef4\u7684\u4e24\u5927\u6d41\u6d3e\ud83d\udd16<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u77e5\u9053\u4e86\u4e3a\u4ec0\u4e48\u8981\u964d\u7ef4\uff0c\u90a3\u5177\u4f53\u600e\u4e48\u64cd\u4f5c\u5462\uff1f\u4e3b\u8981\u6709\u4e24\u79cd\u601d\u8def\uff0c\u5c31\u50cf\u6574\u7406\u623f\u95f4\u7684\u4e24\u79cd\u65b9\u6cd5\u3002<\/p>\n\n\n\n
\ud83d\udd39\u6d41\u6d3e\u4e00\uff1a\u7279\u5f81\u9009\u62e9\uff08Feature Selection\uff09\u2014\u2014 \u505a\u51cf\u6cd5<\/strong><\/p>\n\n\n\n
\u8fd9\u662f\u6700\u76f4\u89c2\u7684\u65b9\u6cd5\u3002\u5c31\u50cf\u4f60\u6574\u7406\u8863\u67dc\uff0c\u53d1\u73b0\u6709 200 \u4ef6\u8863\u670d\uff0c\u4f46\u5e38\u7a7f\u7684\u5c31\u90a3 20 \u4ef6\u3002\u7279\u5f81\u9009\u62e9\u5c31\u662f\u76f4\u63a5\u4ece\u539f\u6765\u7684 200 \u4e2a\u7279\u5f81\u91cc\uff0c\u6311\u51fa\u6700\u91cd\u8981\u7684 20 \u4e2a\uff0c\u5269\u4e0b\u7684 180 \u4e2a\u76f4\u63a5\u6254\u6389\u3002<\/p>\n\n\n\n
\u4f18\u70b9\uff1a<\/strong> \u7b80\u5355\u7c97\u66b4\uff0c\u4fdd\u7559\u4e86\u539f\u59cb\u7279\u5f81\u7684\u7269\u7406\u610f\u4e49\u3002\u6bd4\u5982\u4f60\u6700\u540e\u7559\u4e0b\u4e86 \u201c\u9762\u79ef\u201d \u548c \u201c\u623f\u9f84\u201d\uff0c\u4f60\u5f88\u6e05\u695a\u5b83\u4eec\u4ee3\u8868\u4ec0\u4e48\u3002<\/p>\n\n\n\n
\u7f3a\u70b9\uff1a<\/strong> \u53ef\u80fd\u4f1a\u6254\u6389\u4e00\u4e9b\u770b\u4f3c\u65e0\u7528\u4f46\u7ec4\u5408\u8d77\u6765\u6709\u7528\u7684\u4fe1\u606f\uff0c\u6709\u70b9\u4e00\u5200\u5207\u3002<\/p>\n\n\n\n
\u600e\u4e48\u6254\u5462\uff1f\u4e5f\u6709\u51e0\u79cd\u7b56\u7565\uff1a<\/p>\n\n\n\n
    \n
  • \u8fc7\u6ee4\u6cd5\uff08Filter\uff09<\/strong>\uff1a\u5148\u7528\u7edf\u8ba1\u5b66\u65b9\u6cd5\u7ed9\u6bcf\u4e2a\u7279\u5f81\u6253\u5206\uff08\u6bd4\u5982\u770b\u5b83\u548c\u623f\u4ef7\u7684\u76f8\u5173\u6027\uff09\uff0c\u7136\u540e\u8bbe\u5b9a\u4e00\u4e2a\u5206\u6570\u7ebf\uff0c\u4f4e\u4e8e\u5206\u6570\u7ebf\u7684\u5168\u90e8\u6dd8\u6c70\u3002\u5c31\u50cf\u6d77\u9009\uff0c\u4e0d\u5408\u683c\u7684\u76f4\u63a5 pass\u3002<\/li>\n\n\n\n
  • \u5305\u88f9\u6cd5\uff08Wrapper\uff09<\/strong>\uff1a\u628a\u7279\u5f81\u9009\u62e9\u7684\u8fc7\u7a0b\u548c\u6a21\u578b\u8bad\u7ec3\u5305\u88f9\u5728\u4e00\u8d77\u3002\u4e0d\u65ad\u5730\u5c1d\u8bd5\u4e0d\u540c\u7684\u7279\u5f81\u7ec4\u5408\uff0c\u770b\u54ea\u79cd\u7ec4\u5408\u80fd\u8ba9\u6a21\u578b\u6548\u679c\u6700\u597d\u3002\u8fd9\u5f88\u6709\u6548\uff0c\u4f46\u8ba1\u7b97\u91cf\u5de8\u5927\uff0c\u6709\u70b9\u50cf\u662f\u5728\u641e\u9898\u6d77\u6218\u672f\u3002<\/li>\n\n\n\n
  • \u5d4c\u5165\u6cd5\uff08Embedded\uff09<\/strong>\uff1a\u8ba9\u6a21\u578b\u5728\u8bad\u7ec3\u7684\u65f6\u5019\uff0c\u81ea\u5df1\u5b66\u4f1a\u54ea\u4e9b\u7279\u5f81\u91cd\u8981\uff0c\u54ea\u4e9b\u4e0d\u91cd\u8981\uff0c\u987a\u4fbf\u5c31\u628a\u7279\u5f81\u7ed9\u9009\u4e86\u3002\u6bd4\u5982\u4e00\u4e9b\u9ad8\u7ea7\u7b97\u6cd5\uff08Lasso \u56de\u5f52\u3001\u51b3\u7b56\u6811\uff09\u5929\u751f\u5c31\u5e26\u8fd9\u4e2a\u529f\u80fd\uff0c\u975e\u5e38\u667a\u80fd\u3002<\/li>\n<\/ul>\n\n\n
    \n
    \"\"<\/figure><\/div>\n\n\n
    \u3000\u3000<\/p>\n\n\n\n
    \ud83d\udd39\u6d41\u6d3e\u4e8c\uff1a\u7279\u5f81\u63d0\u53d6\uff08Feature Extraction\uff09\u2014\u2014 \u505a\u5f52\u7eb3<\/strong><\/p>\n\n\n\n
    \u8fd9\u662f\u66f4\u5e38\u7528\u4e5f\u66f4\u9ad8\u7ea7\u7684\u65b9\u6cd5\u3002\u5b83\u4e0d\u662f\u7b80\u5355\u5730\u6254\u6389\u7279\u5f81\uff0c\u800c\u662f\u628a\u539f\u6709\u7684\u591a\u4e2a\u7279\u5f81\uff0c\u91cd\u65b0\u7ec4\u5408\u3001\u6d53\u7f29\uff0c\u521b\u9020\u51fa\u5168\u65b0\u7684\u3001\u6570\u91cf\u66f4\u5c11\u7684\u7279\u5f81<\/strong>\u3002<\/p>\n\n\n\n
    \u8fd9\u4e2a\u8fc7\u7a0b\u6709\u70b9\u50cf\u69a8\u679c\u6c41\u3002<\/p>\n\n\n\n
      \n
    • \u539f\u6765\u7684\u7279\u5f81<\/strong>\uff1a\u662f\u4e00\u6574\u4e2a\u6a59\u5b50\uff0c\u91cc\u9762\u6709\u679c\u8089\u3001\u679c\u76ae\u3001\u7ecf\u7edc\u3001\u6c34\u5206\u7b49\u7b49\uff08\u6210\u767e\u4e0a\u5343\u4e2a\u7ef4\u5ea6\uff09\u3002<\/li>\n\n\n\n
    • \u7279\u5f81\u63d0\u53d6<\/strong>\uff1a\u5c31\u662f\u7528\u69a8\u6c41\u673a\uff08\u964d\u7ef4\u7b97\u6cd5\uff09\u628a\u8fd9\u4e2a\u6a59\u5b50\u8fdb\u884c\u5904\u7406\u3002<\/li>\n\n\n\n
    • \u65b0\u7684\u7279\u5f81<\/strong>\uff1a\u5f97\u5230\u7684\u4e00\u676f\u6a59\u6c41\u3002\u8fd9\u676f\u6a59\u6c41\u5305\u542b\u4e86\u539f\u6765\u6a59\u5b50\u7684\u5927\u90e8\u5206\u7cbe\u534e\uff08\u5473\u9053\u3001\u8425\u517b\uff09\uff0c\u4f46\u5b83\u5df2\u7ecf\u4e0d\u518d\u662f\u6a59\u5b50\u4e86\uff0c\u5b83\u662f\u4e00\u4e2a\u5168\u65b0\u7684\u4e1c\u897f\u3002\u6211\u4eec\u53ef\u80fd\u53ea\u9700\u8981 1 \u676f\u6a59\u6c41\uff081 \u4e2a\u65b0\u7ef4\u5ea6\uff09\u5c31\u80fd\u4ee3\u8868\u539f\u6765\u4e00\u4e2a\u6a59\u5b50\uff08\u6210\u767e\u4e0a\u5343\u4e2a\u65e7\u7ef4\u5ea6\uff09\u7684\u6838\u5fc3\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n\n
      \u4f18\u70b9\uff1a<\/strong> \u80fd\u591f\u4fdd\u7559\u5927\u90e8\u5206\u539f\u59cb\u4fe1\u606f\uff0c\u901a\u5e38\u964d\u7ef4\u6548\u679c\u6bd4\u7279\u5f81\u9009\u62e9\u8981\u597d\u3002<\/p>\n\n\n\n
      \u7f3a\u70b9\uff1a<\/strong> \u65b0\u521b\u9020\u51fa\u6765\u7684\u7279\u5f81\uff0c\u5931\u53bb\u4e86\u539f\u6709\u7684\u7269\u7406\u610f\u4e49\u3002\u90a3\u676f\u6a59\u6c41\u7279\u5f81\uff0c\u4f60\u6ca1\u6cd5\u8bf4\u5b83\u5177\u4f53\u4ee3\u8868 \u201c\u9762\u79ef\u201d \u8fd8\u662f \u201c\u623f\u9f84\u201d\uff0c\u5b83\u662f\u4e00\u4e2a\u7efc\u5408\u4f53\uff0c\u89e3\u91ca\u8d77\u6765\u6bd4\u8f83\u56f0\u96be\u3002<\/p>\n\n\n\n
      \u5728\u7279\u5f81\u63d0\u53d6\u8fd9\u4e2a\u9886\u57df\u91cc\uff0c\u6709\u4e00\u4e2a\u540d\u9707\u6c5f\u6e56\u7684\u6b66\u6797\u76df\u4e3b\uff0c\u5b83\u5c31\u662f PCA<\/strong>\u3002<\/p>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n
      \u3000\u3000<\/p>\n\n\n\n
      \u4e09\u3001PCA\uff08\u4e3b\u6210\u5206\u5206\u6790\uff09\ud83d\udd16<\/strong><\/p>\n\n\n\n
      \n\n\n\n
      PCA\uff08Principal Component Analysis\uff0c\u4e3b\u6210\u5206\u5206\u6790\uff09<\/strong>\uff0c\u662f\u7279\u5f81\u63d0\u53d6\u91cc\u6700\u5e38\u7528\u3001\u6700\u7ecf\u5178\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
      PCA \u7684\u6838\u5fc3\u601d\u60f3\uff1a<\/strong> \u5c31\u50cf\u7ed9\u4e00\u4e2a\u4e09\u7ef4\u7269\u4f53\u62cd\u4e00\u5f20\u4e8c\u7ef4\u7167\u7247\u3002<\/p>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n
      \u8fd9\u4e2a\u82b1\u74f6\u662f\u4e09\u7ef4\u7684\uff0c\u4fe1\u606f\u5f88\u590d\u6742\u3002\u6211\u4eec\u60f3\u7528\u4e00\u5f20\u4e8c\u7ef4\u7684\u7167\u7247\u6765\u6700\u5927\u7a0b\u5ea6\u5730\u5c55\u793a\u5b83\u7684\u6837\u5b50\u3002\u4f60\u4f1a\u600e\u4e48\u62cd\uff1f\u4f60\u80af\u5b9a\u4e0d\u4f1a\u4ece\u82b1\u74f6\u7684\u6b63\u4e0a\u65b9\u6216\u8005\u6b63\u4e0b\u65b9\u62cd\uff0c\u90a3\u6837\u53ea\u80fd\u62cd\u5230\u4e00\u4e2a\u5706\u5f62\u6216\u4e00\u4e2a\u73af\u5f62\uff0c\u4e22\u5931\u4e86\u592a\u591a\u4fe1\u606f\u3002\u4f60\u4e00\u5b9a\u4f1a\u627e\u4e00\u4e2a\u6700\u80fd\u4f53\u73b0\u82b1\u74f6\u8f6e\u5ed3\u3001\u7eb9\u7406\u548c\u5f62\u72b6\u7684\u89d2\u5ea6\u53bb\u62cd\u3002<\/p>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n
      PCA \u5e72\u7684\u5c31\u662f\u8fd9\u4e2a\u4e8b\uff01\u5b83\u8981\u4e3a\u4f60\u7684\u9ad8\u7ef4\u6570\u636e\uff0c\u627e\u5230\u90a3\u4e2a\u6700\u4f73\u62cd\u6444\u89d2\u5ea6\u3002\u8fd9\u4e2a\u6700\u4f73\u89d2\u5ea6\uff0c\u5728 PCA \u91cc\u88ab\u79f0\u4e3a\u4e3b\u6210\u5206\uff08Principal Component\uff09<\/strong>\u3002<\/p>\n\n\n\n
      PCA \u7684\u5de5\u4f5c\u903b\u8f91\uff08\u5927\u767d\u8bdd\u7248\uff09\uff1a<\/strong><\/p>\n\n\n\n
      \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u5806\u4e8c\u7ef4\u6570\u636e\u70b9\uff0c\u50cf\u6563\u843d\u5728\u4e00\u5f20\u7eb8\u4e0a\u7684\u829d\u9ebb\u3002\u6211\u4eec\u60f3\u628a\u5b83\u964d\u5230\u4e00\u7ef4\u3002<\/p>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n
      1.\u7b2c\u4e00\u6b65\uff1a\u627e\u5230\u6700\u4e3b\u8981\u7684\u77db\u76fe \u2014\u2014 \u7b2c\u4e00\u4e3b\u6210\u5206\uff08PC1\uff09<\/strong><\/p>\n\n\n\n
        \n
      • PCA \u4f1a\u626b\u89c6\u8fd9\u5806\u6570\u636e\uff0c\u7136\u540e\u95ee\u81ea\u5df1\uff1a\u201c\u54ea\u4e2a\u65b9\u5411\u4e0a\uff0c\u8fd9\u4e9b\u6570\u636e\u70b9\u5206\u5e03\u5f97\u6700\u5f00\u3001\u6700\u6563\uff1f\u201d\uff0c\u4e5f\u5c31\u662f\u65b9\u5dee\u6700\u5927\u7684\u65b9\u5411<\/strong>\u3002<\/li>\n\n\n\n
      • \u4e3a\u4ec0\u4e48\u627e\u65b9\u5dee\u6700\u5927\u7684\u65b9\u5411\uff1f\u56e0\u4e3a\u65b9\u5dee\u8d8a\u5927\uff0c\u4ee3\u8868\u8fd9\u4e2a\u65b9\u5411\u4e0a\u5305\u542b\u7684\u4fe1\u606f\u91cf\u8d8a\u4e30\u5bcc<\/strong>\u3002\u5982\u679c\u6240\u6709\u6570\u636e\u70b9\u5728\u4e00\u4e2a\u65b9\u5411\u4e0a\u90fd\u6324\u5728\u4e00\u8d77\uff0c\u8bf4\u660e\u8fd9\u4e2a\u65b9\u5411\u6ca1\u5565\u533a\u5206\u5ea6\uff0c\u4fe1\u606f\u91cf\u5f88\u5c0f\u3002<\/li>\n\n\n\n
      • PCA \u627e\u5230\u7684\u8fd9\u4e2a\u80fd\u8ba9\u6570\u636e \u201c\u4f38\u5c55\u201d \u5f97\u6700\u5f00\u7684\u65b9\u5411\uff0c\u5c31\u662f\u7b2c\u4e00\u4e3b\u6210\u5206\uff08PC1\uff09<\/strong>\u3002\u5b83\u5c31\u50cf\u662f\u6545\u4e8b\u7684\u4e3b\u7ebf\u5267\u60c5\uff0c\u5305\u542b\u4e86\u6700\u591a\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n\n\n
        \n
        \"\"<\/figure><\/div>\n\n\n
        2.\u7b2c\u4e8c\u6b65\uff1a\u627e\u5230\u6b21\u8981\u7684\u77db\u76fe \u2014\u2014 \u7b2c\u4e8c\u4e3b\u6210\u5206\uff08PC2\uff09<\/strong><\/p>\n\n\n\n
          \n
        • \u627e\u5230\u4e86\u4e3b\u7ebf\u5267\u60c5\u8fd8\u4e0d\u591f\uff0c\u6211\u4eec\u8fd8\u60f3\u627e\u70b9\u652f\u7ebf\u5267\u60c5\u3002<\/li>\n\n\n\n
        • PCA \u4f1a\u63a5\u7740\u5bfb\u627e\u4e0b\u4e00\u4e2a\u65b9\u5411\u3002\u8fd9\u4e2a\u65b9\u5411\u6709\u4e24\u4e2a\u8981\u6c42\uff1a\n
            \n
          • \u5fc5\u987b\u548c\u521a\u624d\u7684 PC1 \u4e92\u76f8\u5782\u76f4\uff08\u6570\u5b66\u4e0a\u53eb\u6b63\u4ea4\uff09<\/strong>\u3002\u4e3a\u5565\u8981\u5782\u76f4\uff1f\u56e0\u4e3a\u8fd9\u6837\u624d\u80fd\u4fdd\u8bc1\u65b0\u7684\u4fe1\u606f\u548c\u65e7\u7684\u4fe1\u606f\u4e0d\u91cd\u590d\u3001\u4e0d\u76f8\u5173\u3002<\/li>\n\n\n\n
          • \u5728\u6240\u6709\u4e0e PC1 \u5782\u76f4\u7684\u65b9\u5411\u91cc\uff0c\u627e\u5230\u90a3\u4e2a\u80fd\u8ba9\u6570\u636e\u6b21\u4e00\u7ea7 \u201c\u4f38\u5c55\u201d \u7684\u65b9\u5411\uff0c\u4e5f\u5c31\u662f\u65b9\u5dee\u7b2c\u4e8c\u5927\u7684\u65b9\u5411<\/strong>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • \u8fd9\u4e2a\u65b9\u5411\uff0c\u5c31\u662f\u7b2c\u4e8c\u4e3b\u6210\u5206\uff08PC2\uff09<\/strong>\u3002<\/li>\n<\/ul>\n\n\n
            \n
            \"\"<\/figure><\/div>\n\n\n
            3.\u7b2c\u4e09\u6b65\uff1a\u4ee5\u6b64\u7c7b\u63a8\uff0c\u76f4\u5230\u627e\u5230\u6240\u6709\u4e3b\u6210\u5206\u3002<\/strong><\/p>\n\n\n\n
              \n
            • \u5982\u679c\u6570\u636e\u662f N \u7ef4\u7684\uff0cPCA \u5c31\u80fd\u627e\u5230 N \u4e2a\u4e92\u76f8\u5782\u76f4\u7684\u4e3b\u6210\u5206\uff08PC1, PC2, …, PCN\uff09\uff0c\u5b83\u4eec\u7684\u65b9\u5dee\u662f\u4f9d\u6b21\u9012\u51cf\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
              4.\u7b2c\u56db\u6b65\uff1a\u505a\u51fa\u9009\u62e9\uff0c\u5b8c\u6210\u964d\u7ef4\u3002<\/strong><\/p>\n\n\n\n
                \n
              • \u73b0\u5728\uff0c\u6211\u4eec\u6709\u4e86\u4e00\u5957\u5168\u65b0\u7684\u5750\u6807\u7cfb\uff08\u7531 PC1, PC2\u2026\u2026 \u7ec4\u6210\uff09\u3002<\/li>\n\n\n\n
              • \u6211\u4eec\u4f1a\u53d1\u73b0\uff0c\u7edd\u5927\u90e8\u5206\u4fe1\u606f\uff08\u6bd4\u5982 95% \u7684\u65b9\u5dee\uff09\u90fd\u96c6\u4e2d\u5728\u524d\u51e0\u4e2a\u4e3b\u6210\u5206\u4e0a\uff08\u6bd4\u5982 PC1 \u548c PC2\uff09\u3002\u540e\u9762\u7684\u90a3\u4e9b\u4e3b\u6210\u5206\uff08PC3, PC4\u2026\u2026\uff09\u5305\u542b\u7684\u65b9\u5dee\u5f88\u5c0f\uff0c\u57fa\u672c\u5c31\u662f\u566a\u97f3\u4e86\u3002<\/li>\n\n\n\n
              • \u4e8e\u662f\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4fdd\u7559\u524d K \u4e2a\u6700\u91cd\u8981\u7684\u4e3b\u6210\u5206<\/strong>\uff0c\u6254\u6389\u540e\u9762\u7684\u3002<\/li>\n\n\n\n
              • \u6700\u540e\uff0c\u628a\u539f\u59cb\u6570\u636e\u6295\u5f71\u5230\u8fd9 K \u4e2a\u4e3b\u6210\u5206\u6784\u6210\u7684 \u201c\u65b0\u5750\u6807\u7cfb\u201d \u4e0a\uff0c\u5c31\u5f97\u5230\u4e86\u964d\u7ef4\u540e\u7684\u65b0\u6570\u636e\uff01<\/li>\n<\/ul>\n\n\n\n
                  <\/ol>\n\n\n\n
                  \u6bd4\u5982\uff0c\u628a 100 \u7ef4\u7684\u6570\u636e\u7528 PCA \u964d\u5230 2 \u7ef4\uff0c\u6211\u4eec\u5c31\u662f\u4fdd\u7559\u4e86\u4fe1\u606f\u91cf\u6700\u5927\u7684 PC1 \u548c PC2\uff0c\u7136\u540e\u628a\u6240\u6709\u6570\u636e\u70b9\u90fd \u201c\u62cd\u201d \u5230\u8fd9\u4e2a\u7531 PC1 \u548c PC2 \u6784\u6210\u7684\u4e8c\u7ef4\u5e73\u9762\u4e0a\uff0c\u5f97\u5230\u4e00\u5957\u5168\u65b0\u7684\u4e8c\u7ef4\u5750\u6807\u3002<\/p>\n\n\n\n
                  \ud83d\udca1 \u6574\u4e2a\u8fc7\u7a0b\uff0c\u5c31\u50cf\u628a\u4e00\u4e2a\u7acb\u4f53\u7684\u7269\u4f53\uff0c\u62cd\u6210\u4e86\u4e00\u5f20\u4fe1\u606f\u91cf\u6700\u5927\u7684\u4e8c\u7ef4\u7167\u7247\u3002\u867d\u7136\u7ef4\u5ea6\u964d\u4f4e\u4e86\uff0c\u4f46\u7269\u4f53\u7684\u6838\u5fc3\u6837\u8c8c\u88ab\u4fdd\u7559\u4e86\u4e0b\u6765\u3002<\/p>\n\n\n\n
                  \u3000\u3000<\/p>\n\n\n\n
                  \u56db\u3001\u6765\u6765\u6765\uff0c\u603b\u7ed3\u4e00\u4e0b\u5427\uff01\ud83d\udd16<\/strong><\/p>\n\n\n\n
                  \n\n\n\n
                  1.\u201c\u7ef4\u201d \u662f\u4ec0\u4e48\uff1f<\/strong> \u5728 AI \u91cc\uff0c\u7ef4\u5ea6 = \u7279\u5f81<\/strong>\u3002100 \u4e2a\u7279\u5f81\u5c31\u662f 100 \u7ef4\u3002<\/p>\n\n\n\n
                  2.\u4e3a\u4ec0\u4e48\u8981 \u201c\u964d\u7ef4\u201d\uff1f<\/strong> \u56e0\u4e3a\u9ad8\u7ef4\u6570\u636e\u4f1a\u5bfc\u81f4\u7ef4\u5ea6\u707e\u96be<\/strong>\uff0c\u8ba9 AI \u8ba1\u7b97\u6162\u3001\u5bb9\u6613\u7b28\uff08\u8fc7\u62df\u5408\uff09\u3002\u964d\u7ef4\u662f\u4e3a\u4e86\u63d0\u901f\u3001\u589e\u6548\u3001\u9632\u53d8\u7b28\u3002<\/p>\n\n\n\n
                  3.\u964d\u7ef4\u4e24\u5927\u6d41\u6d3e\uff1a<\/strong><\/p>\n\n\n\n
                    \n
                  • \u7279\u5f81\u9009\u62e9<\/strong>\uff1a\u50cf\u6574\u7406\u8863\u67dc\uff0c\u76f4\u63a5\u6254\u6389<\/strong>\u4e0d\u91cd\u8981\u7684\u7279\u5f81\u3002\u4f18\u70b9\u662f\u7b80\u5355\u3001\u53ef\u89e3\u91ca<\/strong>\u3002<\/li>\n\n\n\n
                  • \u7279\u5f81\u63d0\u53d6<\/strong>\uff1a\u50cf\u69a8\u679c\u6c41\uff0c\u628a\u65e7\u7279\u5f81\u878d\u5408<\/strong>\u6210\u4fe1\u606f\u91cf\u5927\u7684\u65b0\u7279\u5f81\u3002\u4f18\u70b9\u662f\u6548\u679c\u597d<\/strong>\uff0c\u4f46\u65b0\u7279\u5f81\u4e0d\u53ef\u89e3\u91ca\u3002<\/li>\n<\/ul>\n\n\n\n
                    4.PCA\uff08\u4e3b\u6210\u5206\u5206\u6790\uff09\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n\n\n\n
                      \n
                    • \u662f\u7279\u5f81\u63d0\u53d6\u6700\u5e38\u7528\u7684\u7b97\u6cd5\uff1b<\/li>\n\n\n\n
                    • \u6838\u5fc3\u601d\u60f3\u662f\u627e\u5230\u6570\u636e\u65b9\u5dee\u6700\u5927\u7684\u65b9\u5411\uff08\u4e3b\u6210\u5206\uff09<\/strong>\uff0c\u56e0\u4e3a\u65b9\u5dee\u5927 = \u4fe1\u606f\u91cf\u5927<\/strong>\u3002<\/li>\n\n\n\n
                    • \u901a\u8fc7\u4fdd\u7559\u524d\u51e0\u4e2a\u6700\u91cd\u8981\u7684\u4e3b\u6210\u5206\uff0c\u6254\u6389\u6b21\u8981\u7684\uff0c\u4ece\u800c\u5b9e\u73b0\u964d\u7ef4\u3002\u5c31\u50cf\u7ed9\u4e00\u4e2a 3D \u7269\u4f53\uff0c\u627e\u5230\u6700\u597d\u7684\u89d2\u5ea6\uff0c\u62cd\u4e00\u5f20\u4fe1\u606f\u91cf\u6700\u8db3\u7684 2D \u7167\u7247\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                      \u8f6c\u8f7d\uff1a\u5c0f\u7ea2\u4e66 AI\u4ea7\u54c1\u8d75\u54e5 \u524d\u8a00\ud83d\udd16 \u6709\u6ca1\u6709\u89c9\u5f97\uff0c\u6211\u4eec\u751f\u6d3b\u5728\u4e00\u4e2a\u4fe1\u606f\u7206\u70b8\u7684\u65f6\u4ee3\uff1f\u624b\u673a\u91cc APP \u4e0a\u5343\u4e2a\uff0c\u8863\u67dc\u91cc\u8863 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20736"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20736"}],"version-history":[{"count":2,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20736\/revisions"}],"predecessor-version":[{"id":20756,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20736\/revisions\/20756"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}