{"id":5015,"date":"2023-03-22T11:19:50","date_gmt":"2023-03-22T03:19:50","guid":{"rendered":"http:\/\/192.168.10.115\/index.php\/2023\/03\/22\/5015\/"},"modified":"2023-03-22T13:25:34","modified_gmt":"2023-03-22T05:25:34","slug":"%e7%bc%96%e8%be%91%e4%ba%8e-2023-03-21-1342%e3%83%bbip-%e5%b1%9e%e5%9c%b0%e6%b5%99%e6%b1%9f%e8%80%81%e7%8e%8b%e8%ae%b2%e7%9a%84%e8%87%aa%e5%8a%a8%e9%a9%be%e9%a9%b6%ef%bc%88%e8%a7%84%e5%88%92%e9%9d%9e","status":"publish","type":"post","link":"http:\/\/222.128.65.89:18086\/index.php\/2023\/03\/22\/5015\/","title":{"rendered":"2023-03-21\u8001\u738b\u8bb2\u7684\u81ea\u52a8\u9a7e\u9a76\uff08\u89c4\u5212\u975e\u51f8\u7a7a\u95f4\uff09"},"content":{"rendered":"

\u4e00\u3001\u6982\u8ff0<\/p>\n

\u51b3\u7b56\u89c4\u5212\u7b97\u6cd5\u6982\u8ff0\u81ea\u52a8\u9a7e\u9a766\u4e2a\u7ea7\u522b\uff1aL0-L5<\/p>\n

L0 \u6ca1\u6709\u4efb\u4f55\u81ea\u52a8\u9a7e\u9a76\u529f\u80fd<\/p>\n

L1 \u6709\u6a2a\u5411\u548c\u7eb5\u5411\u7684\u81ea\u52a8\u9a7e\u9a76\u529f\u80fd\uff0c\u4f46\u662f\u6a2a\u7eb5\u5411\u65e0\u6cd5\u8054\u5408\u4f7f\u7528<\/p>\n

L2 \u6a2a\u7eb5\u5411\u53ef\u4ee5\u8054\u5408\u4f7f\u7528\uff0c\u4f46\u9a7e\u9a76\u5458\u5fc5\u987b\u5bf9\u4e00\u5207\u72b6\u51b5\u8d1f\u8d23<\/p>\n

L3 \u529f\u80fd\u4e0eL2\u57fa\u672c\u76f8\u540c\uff0c\u6700\u5927\u7684\u533a\u522b\u5728\u4e8e\u8d23\u4efb\uff0c\u5bf9\u4e8e\u90e8\u5206\u573a\u666f\uff0c\u9a7e\u9a76\u5458\u4e0d\u5fc5\u8d1f\u8d23<\/p>\n

L4 \u5927\u90e8\u5206\u9053\u8def\u7686\u53ef\u81ea\u52a8\u9a7e\u9a76\uff0c\u5927\u90e8\u5206\u573a\u666f\u90fd\u4e0d\u9700\u8981\u9a7e\u9a76\u5458\u8d1f\u8d23<\/p>\n

L5 \u5b8c\u5168\u81ea\u52a8\u9a7e\u9a76<\/p>\n

\u4e24\u6761\u5173\u952e\u56e0\u7d20\u533a\u5206\uff1a\u529f\u80fd\u548c\u8d23\u4efb<\/p>\n

L0-L2\u4e3b\u8981\u662f\u529f\u80fd\u533a\u5206\uff0cL3-L5\u4e3b\u8981\u662f\u8d23\u4efb\u533a\u5206\uff0c\u800c\u4e0d\u540c\u516c\u53f8L2\u4e0eL2\u4e4b\u95f4\u5dee\u8ddd\u5de8\u5927\uff0c\u53ea\u8981\u5382\u5bb6\u5ba3\u79f0\u9a7e\u9a76\u5458\u9700\u8981\u8d1f\u5168\u8d23\uff0c\u5373\u4f7f\u529f\u80fd\u505a\u5230\u4e86L2\uff0c\u672c\u8d28\u4e0a\u8fd8\u662fL2<\/p>\n

L2\u672c\u8eab\u6bd4\u8f83\u5bbd\u6cdb\uff0c\u53ea\u6709\u5b9a\u901f\u5de1\u822a+\u8f66\u9053\u4fdd\u6301\u7684\u6c7d\u8f66\u4e5f\u662fL2\uff0c\u4ec0\u4e48\u90fd\u80fd\u505a\uff0c\u4f46\u662f\u9a7e\u9a76\u5458\u8981\u8d1f\u5168\u8d23\u7684\u6c7d\u8f66\u4e5f\u662fL2<\/p>\n

\u51b3\u7b56\u89c4\u5212\u7b97\u6cd5\u5c31\u662f\u666e\u901aL2\u5230\u4ec0\u4e48\u90fd\u80fd\u505a\u7684L2\u7684\u4e00\u4e2a\u91cd\u8981\u6a21\u5757<\/p>\n

\/home\/zqht\/\u56fe\u7247\/2023-03-22 11-34-21\u5c4f\u5e55\u622a\u56fe.png\"\"<\/p>\n

\u529f\u80fd\u8d8a\u5f80\u4e0a\u505a\uff0c\u8d8a\u4e30\u5bcc\uff0c\u8d8a\u590d\u6742\uff0c\u51b3\u7b56\u89c4\u5212\u7b97\u6cd5\u8d8a\u91cd\u8981\uff0c\u4e5f\u8d8a\u96be\u5728L4\u4e2d\u51b3\u7b56\u89c4\u5212\u6a21\u5757\u53ef\u4ee5\u8bf4\u662f\u6700\u91cd\u8981\uff0c\u4e5f\u662f\u6700\u590d\u6742\uff0c\u6700\u96be\u505a\u7684\u6a21\u5757<\/p>\n

\u96be\u505a\u5230\u628a\u6574\u4e2a\u6a21\u5757\u4e00\u5206\u4e3a\u4e09\uff0c\u8fd8\u8981\u52a0\u4e0a\u5730\u56fe\u6a21\u5757\uff0c\u6bcf\u5757\u5355\u72ec\u5730\u53bb\u505a\u624d\u80fd\u52c9\u5f3a\u5b8c\u6210\u201c\u5927\u8111\u201d\u7684\u5de5\u4f5c\uff0c\u800c\u4e14\u622a\u6b62\u52302021\u5e74\u4e5f\u4e0d\u80fd\u8bf4\u5b8c\u5168\u7684\u89e3\u51b3<\/p>\n

\u6574\u4e2a\u51b3\u7b56\u89c4\u5212\u6a21\u5757\u4e00\u5206\u4e3a\u4e09\uff0c\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd\uff1a<\/p>\n

1\u3001\u5bfc\u822a\u89c4\u5212\uff1aA*\u3001djkstar\uff0c\u5bfc\u822a\u89c4\u5212\u7b97\u6cd5\uff0c\u6b64\u7b97\u6cd5\u5c06\u8ba1\u7b97\u51fa\u5927\u5730\u56fe\u4e0aA\u5230B\u7684\u6700\u4f18\u8def\u5f84\uff0c\u6b64\u7b97\u6cd5\u4e0e\u673a\u5668\u4eba\u5bfc\u822a\uff0c\u624b\u673a\u5bfc\u822a\u7b97\u6cd5\u57fa\u672c\u4e00\u81f4\uff0c\u957f\u5ea6\u5728\u51e0\u516c\u91cc\u5230\u51e0\u767e\u516c\u91cc\u4e0d\u7b49\uff0c\u8be5\u7b97\u6cd5\u662f\u6574\u4e2a\u89c4\u5212\u6a21\u5757\u4e2d\u6700\u4e3a\u6210\u719f\u7684\u7b97\u6cd5<\/p>\n

\u7279\u70b9\uff1a\u5bfc\u822a\u7b97\u6cd5\u4f1a\u7ed9\u4e00\u4e2a\u7c97\u7565\u7684\uff0c\u5927\u8303\u56f4\u7684\u8def\u5f84\uff0c\u4f46\u662f\u6b64\u8def\u5f84\u4e0d\u4f1a\u8003\u8651\u5982\u4f55\u907f\u969c\uff0c\u4e5f\u4e0d\u4f1a\u8003\u8651\u8f66\u8f86\u52a8\u529b\u5b66\u7ea6\u675f\uff0c\u4e00\u822c\u89c4\u5212\u7684\u8def\u5f84\u65f6\u4e0d\u89c4\u5219\u7684\u6298\u7ebf\u3002\u5bfc\u822a\u7b97\u6cd5\u4e00\u822c\u53ea\u9700\u8981\u6267\u884c\u4e00\u6b21\uff0c\u53ea\u6709\u9047\u5230\u5927\u8303\u56f4\u7684\u62e5\u5835\uff0c\u65bd\u5de5\uff0c\u504f\u822a\u7b49\u60c5\u51b5\u624d\u4f1a\u518d\u6b21\u6267\u884c<\/p>\n

2\u3001\u884c\u4e3a\u89c4\u5212\uff1a\u5373\u51b3\u7b56\uff1b\u51b3\u5b9a\u8f66\u8f86\u884c\u9a76\u610f\u56fe\u7684\u7b97\u6cd5\uff0c\u5bf9\u4e8e\u9759\u6001\u969c\u788d\u7269\u5230\u5e95\u5f80\u5de6\u8fd8\u662f\u5f80\u53f3\uff0c\u5bf9\u4e8e\u52a8\u6001\u969c\u788d\u7269\u662f\u51cf\u901f\u8fd8\u662f\u907f\u8ba9\u6216\u52a0\u901f\u8d85\u8f66\uff0c\u51b3\u7b56\u7b97\u6cd5\u51b3\u5b9a\u4e86\u8f66\u8f86\u7684\u610f\u56fe\uff0c\u8fd9\u4e5f\u662f\u6574\u4e2a\u89c4\u5212\u7b97\u6cd5\u6700\u96be\u7684\u90e8\u5206<\/p>\n

\u7279\u70b9\uff1a\u51b3\u7b56\u7b97\u6cd5\u4f1a\u7ed9\u4e00\u4e2a\u8f66\u8f86\u7684\u884c\u9a76\u610f\u56fe\uff0c\u4f1a\u6307\u5bfc\u8f66\u8f86\u907f\u8ba9\u3001\u8d85\u8f66\u3001\u5de6\u8f6c\u3001\u53f3\u8f6c\uff0c\u4f46\u662f\u51b3\u7b56\u4e0d\u4f1a\u7ed9\u5177\u4f53\u7684\u8fd0\u52a8\u5efa\u8bae\uff0c\u4f8b\u5982\u5f80\u5de6\u8f6c\u591a\u5c11\u5ea6\uff0c\u8f66\u8f86\u52a0\u901f\u5230\u591a\u5c11\uff1b\u5b9e\u9645\u73af\u5883\u77ac\u606f\u4e07\u53d8\uff0c\u56e0\u6b64\u51b3\u7b56\u7b97\u6cd5\u9700\u8981\u8f83\u9ad8\u7684\u6267\u884c\u9891\u7387\uff0c\u4e00\u822c\u4e3a10hz\uff0c\u51b3\u7b56\u7b97\u6cd5\u9700\u8981\u4e00\u5b9a\u7684\u7a33\u5b9a\u6027\uff0c\u4e0d\u5141\u8bb8\u5728\u5468\u56f4\u73af\u5883\u7a33\u5b9a\u65f6\u51fa\u73b0\u671d\u4ee4\u5915\u6539\u73b0\u8c61<\/p>\n

3\u3001\u8fd0\u52a8\u89c4\u5212\u7b97\u6cd5\uff1a\u6839\u636e\u51b3\u7b56\u7ed9\u51fa\u7684\u884c\u4e3a\u610f\u56fe\u5728\u76f8\u5173\u7684\u65f6\u7a7a\u4e2d\u641c\u7d22\u51fa\uff08\u6216\u4f18\u5316\u51fa\uff09\u4e00\u6761\u5177\u6709\u8be6\u7ec6\u8def\u5f84\u901f\u5ea6\u4fe1\u606f\uff0c\u5e76\u4e14\u6ee1\u8db3\u5404\u4e2a\u7ea6\u675f\u6761\u4ef6\u7684\u8f68\u8ff9\uff0c\u5e76\u5c06\u6b64\u8f68\u8ff9\u53d1\u7ed9\u63a7\u5236\u6a21\u5757\u53bb\u8ddf\u8e2a\uff0c\u6b64\u8f68\u8ff9\u957f\u5ea6\u4e00\u822c\u5728\u51e0\u7c73\u5230\u51e0\u5341\u7c73\u4e0d\u7b49<\/p>\n

\u7279\u70b9\uff1a\u8fd0\u529f\u89c4\u5212\u751f\u6210\u7684\u8f68\u8ff9\u662f\u51b3\u7b56\u89c4\u5212\u6a21\u5757\u7684\u6700\u7ec8\u8f93\u51fa\uff0c\u5177\u6709\u8be6\u7ec6\u7684\u8def\u5f84\u901f\u5ea6\u7684\u4fe1\u606f\uff0c\u6267\u884c\u9891\u7387\u4e0e\u51b3\u7b56\u76f8\u540c\uff0c\u4e3a10Hz\uff0c\u540c\u6837\uff0c\u8fd0\u52a8\u89c4\u5212\u4e5f\u8981\u6c42\u5177\u6709\u4e00\u5b9a\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n

\u4e94\u6b21\u591a\u9879\u5f0f\u662f\u5e26\u7ea6\u675f\u7684\u6cdb\u51fd<\/p>\n

<\/p>\n

\u53d6\u6781\u5c0f\u503c\u7684\u89e3\u51fd\u6570<\/p>\n

1\u3001\u51f8\u4f18\u5316\u4e0e\u975e\u51f8\u4f18\u5316<\/p>\n

\u81ea\u52a8\u9a7e\u9a76\u89c4\u5212\u76ee\u6807\uff1a\u7b97\u51fa\u4e00\u6761\u6ee1\u8db3\u7ea6\u675f\u7684\u6700\u4f18\u8f68\u8ff9<\/p>\n

\u7136\u800c\uff0c\u4ec0\u4e48\u662f\u201c\u6700\u4f18\u201d\uff1f<\/p>\n

\u6307\u6807\uff1a\u2460\u5e73\u6ed1\u6027\uff1b\u2461\u8212\u9002\u6027\uff1b\u2462\u5c3d\u53ef\u80fd\u77ed\uff0c\u8017\u65f6\u5c11\u3002<\/p>\n

\u7ea6\u675f\uff1a\u2460\u8f68\u8ff9\u8fde\u7eed\u6027\uff1b\u2461\u65e0\u78b0\u649e\uff1b\u2462\u9075\u5b88\u4ea4\u89c4\uff1b\u2463\u8f66\u8f86\u52a8\u529b\u5b66\u3002<\/p>\n

\u8861\u91cf\u8f68\u8ff9\u8d28\u91cf\u7528Cost function\u8868\u793a<\/p>\n

\u5047\u8bbe\uff08\u7cfb\u6570\u5747\u4e3a\u672a\u77e5\u5e38\u6570\uff09<\/p>\n

\u5219Cost Function<\/p>\n

J\u8d8a\u5c0f\uff0c\u610f\u5473\u7740\u8d8a\u5e73\u6ed1\u8212\u9002\uff0c\u5f53\u7136\u4e5f\u8981\u6ee1\u8db3\u5404\u79cd\u7ea6\u675f<\/p>\n

\u6570\u5b66\u95ee\u9898\uff1a\u6c42\u89e3Cost Function\u5728\u7ea6\u675f\u6761\u4ef6\u4e0b\u7684\u6700\u5c0f\u503c\u95ee\u9898<\/p>\n

\u5982\u4f55\u8ba1\u7b97y=f(x)\u7684\u6700\u5c0f\u503c\uff08\u5728\u7ea6\u675f\u4e0b\uff09<\/p>\n

\u56de\u5fc6\uff1a\u9ad8\u4e2d\u65f6\u5982\u4f55\u89e3y = f(x)\u5728x\u2208[a,b]\u4e0a\u7684\u6700\u5c0f\u503c\uff08f(x)\u662f\u8fde\u7eed\u53ef\u5bfc\u51fd\u6570\uff09<\/p>\n

<\/p>\n

\u2460\u7b97\u51fa<\/p>\n

\u2461\u6c42\u51fay’ = f'(x)<\/p>\n

\u2462\u4ee4y’ = 0\uff0c\u89e3\u51faf'(x)= 0\u7684\u6839\uff0c\u8bbe\u4e3a<\/p>\n

\u2463\u8ba1\u7b97\u4e0e\u6bd4\u8f83\uff0c<\/p>\n

\u4e2d\u6700\u5c0f\u7684\u90a3\u4e2a\u5c31\u662fy = f(x)\u5728[a,b]\u4e0a\u7684\u6700\u5c0f\u503c<\/p>\n

\u4f46\u662f\u6b64\u65b9\u6cd5\u65e0\u6cd5\u5feb\u901f\u6c42\u89e3\u9ad8\u7ef4\u5ea6\u590d\u6742\u7ea6\u675f\u4e0b\u7684\u6700\u5c0f\u503c\u95ee\u9898\uff0c\u6bd4\u5982\uff1a<\/p>\n

<\/p>\n

\u6709\u7684\u65f6\u5019\u5c31\u7b97\u6c42\u51fa\u6781\u503c\u70b9\uff0c\u4f46\u662f\u6781\u503c\u70b9\u5f88\u591a\uff0c\u96be\u4ee5\u5feb\u901f\u8ba1\u7b97\uff0c\u6216\u8005\u7ea6\u675f\u590d\u6742<\/p>\n

<\/p>\n

\u4e00\u822c\u6c42\u590d\u6742\u51fd\u6570\u5728\u590d\u6742\u7ea6\u675f\u4e0b\u7684\u6700\u5c0f\u503c\u95ee\u9898\u90fd\u91c7\u7528\u8fed\u4ee3\u6cd5<\/p>\n

\u5e38\u89c1\u8fed\u4ee3\u6cd5\u6709\uff1a<\/p>\n

1\u3001\u725b\u987f\u6cd5\u300a\u6570\u503c\u5206\u6790\u300b<\/p>\n

2\u3001\u68af\u5ea6\u4e0b\u964d\u6cd5<\/p>\n

3\u3001\u9ad8\u65af\u725b\u987f\u6cd5\u300a\u89c6\u89c9slam\u5341\u56db\u8bb2\u300b<\/p>\n

\u68af\u5ea6\u4e0b\u964d\u6cd5\u5927\u6982\u8fc7\u7a0b<\/p>\n

<\/p>\n

\u6309\u7167\u68af\u5ea6\u7684\u53cd\u5411\u6765\u8fed\u4ee3\uff0c\u901a\u8fc7\u5bfc\u6570\u5927\u5c0f\u6765\u5224\u65ad\u6536\u655b\uff0c\u8981\u4e48\u6536\u655b\u5230\u6781\u503c\u70b9\uff0c\u8981\u4e48\u6536\u655b\u5230\u8fb9\u754c<\/p>\n

\u8fed\u4ee3\u6cd5\u7f3a\u70b9\uff1a\u5bf9\u521d\u503c\u654f\u611f\uff0c\u6709\u53ef\u80fd\u4f1a\u6536\u655b\u5230\u5c40\u90e8\u6781\u5c0f\u503c<\/p>\n

<\/p>\n

<\/p>\n

\u4e5f\u6709\u4e00\u4e9b\u6027\u8d28\u8f83\u597d\u7684\u95ee\u9898\uff0c\u6bd4\u5982\uff1a<\/p>\n

\u6216\u8005<\/p>\n

<\/p>\n

\u8fd9\u79cd\u6027\u8d28\u6bd4\u8f83\u597d\u7684\u95ee\u9898\u53eb\u505a\u51f8\u4f18\u5316<\/p>\n

\u51f8\u4f18\u5316\u5fc5\u6709\u4e24\u4e2a\u6027\u8d28\uff1a<\/p>\n

\u2460Cost function\u53ea\u6709\u4e00\u4e2a\u6781\u503c\u70b9\uff0c\u4e14\u4e3a\u6781\u5c0f\u503c\uff08\u51f8\u51fd\u6570\uff09<\/p>\n

\u2461\u7ea6\u675f\u7a7a\u95f4\u662f\u4e00\u5757\u201c\u5b8c\u6574\u7684\u201d\u201c\u4e0d\u7834\u788e\u7684\u201d\u7a7a\u95f4\uff08\u51f8\u7a7a\u95f4\uff09<\/p>\n

\u6c42\u51f8\u51fd\u6570\u5728\u51f8\u7a7a\u95f4\u7684\u6700\u5c0f\u503c\u95ee\u9898\u79f0\u4e3a\u51f8\u4f18\u5316<\/p>\n

\u51f8\u7a7a\u95f4\u7684\u4e25\u8c28\u5b9a\u4e49\uff0c\u7531\u5982\u591a\u8fb9\u5f62\u5f15\u7533<\/p>\n

<\/p>\n

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