{"id":1164,"date":"2014-03-12T15:04:30","date_gmt":"2014-03-12T07:04:30","guid":{"rendered":"http:\/\/blog.dayandcarrot.net\/?p=1164"},"modified":"2014-03-12T15:04:30","modified_gmt":"2014-03-12T07:04:30","slug":"%e7%89%b9%e5%be%81%e9%80%89%e6%8b%a9-%e5%b8%b8%e8%a7%81%e7%9a%84%e6%90%9c%e7%b4%a2%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=1164","title":{"rendered":"\u7279\u5f81\u9009\u62e9-\u5e38\u89c1\u7684\u641c\u7d22\u7b97\u6cd5"},"content":{"rendered":"<div>\n<h2>\u7279\u5f81\u9009\u62e9-\u5e38\u89c1\u7684\u641c\u7d22\u7b97\u6cd5<\/h2>\n<\/div>\n<div id=\"content\">\n\u00a0\u672c\u6587\u8f6c\u8f7d\u81ea\uff1a<a href=\"http:\/\/hi.baidu.com\/zhangweijiqn\/item\/bafddc1bf53cd4f5756a843e\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/hi.baidu.com\/zhangweijiqn\/item\/bafddc1bf53cd4f5756a843e<\/a><br \/>\n<strong>2.2.1<\/strong><strong>\u5b8c\u5168\u641c\u7d22<\/strong><br \/>\n\u5b8c\u5168\u641c\u7d22\u5206\u4e3a\u7a77\u4e3e\u641c\u7d22(Exhaustive)\u4e0e\u975e\u7a77\u4e3e\u641c\u7d22(Non-Exhaustive)\u4e24\u7c7b\u3002<br \/>\n<strong>\u3000\u3000(1)\u00a0<\/strong><strong>\u5e7f\u5ea6\u4f18\u5148\u641c\u7d22<\/strong><strong>(\u00a0Breadth\u00a0First\u00a0Search\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u5e7f\u5ea6\u4f18\u5148\u904d\u5386\u7279\u5f81\u5b50\u7a7a\u95f4\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u679a\u4e3e\u4e86\u6240\u6709\u7684\u7279\u5f81\u7ec4\u5408\uff0c\u5c5e\u4e8e\u7a77\u4e3e\u641c\u7d22\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(2n)\uff0c\u5b9e\u7528\u6027\u4e0d\u9ad8\u3002<br \/>\n<strong>\u3000\u3000(2)<\/strong><strong>\u5206\u652f\u9650\u754c\u641c\u7d22<\/strong><strong>(\u00a0Branch\u00a0and\u00a0Bound\u00a0)\u00a0<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u5728\u7a77\u4e3e\u641c\u7d22\u7684\u57fa\u7840\u4e0a\u52a0\u5165\u5206\u652f\u9650\u754c\u3002\u4f8b\u5982\uff1a\u82e5\u65ad\u5b9a\u67d0\u4e9b\u5206\u652f\u4e0d\u53ef\u80fd\u641c\u7d22\u51fa\u6bd4\u5f53\u524d\u627e\u5230\u7684\u6700\u4f18\u89e3\u66f4\u4f18\u7684\u89e3\uff0c\u5219\u53ef\u4ee5\u526a\u6389\u8fd9\u4e9b\u5206\u652f\u3002<br \/>\n<strong>\u3000\u3000(3)\u00a0<\/strong><strong>\u5b9a\u5411\u641c\u7d22<\/strong><strong>(Beam\u00a0Search\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u9996\u5148\u9009\u62e9N\u4e2a\u5f97\u5206\u6700\u9ad8\u7684\u7279\u5f81\u4f5c\u4e3a\u7279\u5f81\u5b50\u96c6\uff0c\u5c06\u5176\u52a0\u5165\u4e00\u4e2a\u9650\u5236\u6700\u5927\u957f\u5ea6\u7684\u4f18\u5148\u961f\u5217\uff0c\u6bcf\u6b21\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u5f97\u5206\u6700\u9ad8\u7684\u5b50\u96c6\uff0c\u7136\u540e\u7a77\u4e3e\u5411\u8be5\u5b50\u96c6\u52a0\u51651\u4e2a\u7279\u5f81\u540e\u4ea7\u751f\u7684\u6240\u6709\u7279\u5f81\u96c6\uff0c\u5c06\u8fd9\u4e9b\u7279\u5f81\u96c6\u52a0\u5165\u961f\u5217\u3002<br \/>\n<strong>\u3000\u3000(4)\u00a0<\/strong><strong>\u6700\u4f18\u4f18\u5148\u641c\u7d22<\/strong><strong>(\u00a0Best\u00a0First\u00a0Search\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4e0e\u5b9a\u5411\u641c\u7d22\u7c7b\u4f3c\uff0c\u552f\u4e00\u7684\u4e0d\u540c\u70b9\u662f\u4e0d\u9650\u5236\u4f18\u5148\u961f\u5217\u7684\u957f\u5ea6\u3002<br \/>\n<strong>2.2.2\u00a0<\/strong><strong>\u542f\u53d1\u5f0f\u641c\u7d22<\/strong><strong><br \/>\n<\/strong><br \/>\n<strong>\u3000\u3000(1)<\/strong><strong>\u5e8f\u5217\u524d\u5411\u9009\u62e9<\/strong><strong>(\u00a0SFS\u00a0,\u00a0Sequential\u00a0Forward\u00a0Selection\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u7279\u5f81\u5b50\u96c6X\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u6bcf\u6b21\u9009\u62e9\u4e00\u4e2a\u7279\u5f81x\u52a0\u5165\u7279\u5f81\u5b50\u96c6X\uff0c\u4f7f\u5f97\u7279\u5f81\u51fd\u6570J(\u00a0X)\u6700\u4f18\u3002\u7b80\u5355\u8bf4\u5c31\u662f\uff0c\u6bcf\u6b21\u90fd\u9009\u62e9\u4e00\u4e2a\u4f7f\u5f97\u8bc4\u4ef7\u51fd\u6570\u7684\u53d6\u503c\u8fbe\u5230\u6700\u4f18\u7684\u7279\u5f81\u52a0\u5165\uff0c\u5176\u5b9e\u5c31\u662f\u4e00\u79cd\u7b80\u5355\u7684\u8d2a\u5fc3\u7b97\u6cd5\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u7f3a\u70b9\u662f\u53ea\u80fd\u52a0\u5165\u7279\u5f81\u800c\u4e0d\u80fd\u53bb\u9664\u7279\u5f81\u3002\u4f8b\u5982\uff1a\u7279\u5f81A\u5b8c\u5168\u4f9d\u8d56\u4e8e\u7279\u5f81B\u4e0eC\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u5982\u679c\u52a0\u5165\u4e86\u7279\u5f81B\u4e0eC\u5219A\u5c31\u662f\u591a\u4f59\u7684\u3002\u5047\u8bbe\u5e8f\u5217\u524d\u5411\u9009\u62e9\u7b97\u6cd5\u9996\u5148\u5c06A\u52a0\u5165\u7279\u5f81\u96c6\uff0c\u7136\u540e\u53c8\u5c06B\u4e0eC\u52a0\u5165\uff0c\u90a3\u4e48\u7279\u5f81\u5b50\u96c6\u4e2d\u5c31\u5305\u542b\u4e86\u591a\u4f59\u7684\u7279\u5f81A\u3002<br \/>\n&nbsp;<br \/>\n<strong>\u3000\u3000(2)<\/strong><strong>\u5e8f\u5217\u540e\u5411\u9009\u62e9<\/strong><strong>(\u00a0SBS\u00a0,\u00a0Sequential\u00a0Backward\u00a0Selection\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4ece\u7279\u5f81\u5168\u96c6O\u5f00\u59cb\uff0c\u6bcf\u6b21\u4ece\u7279\u5f81\u96c6O\u4e2d\u5254\u9664\u4e00\u4e2a\u7279\u5f81x\uff0c\u4f7f\u5f97\u5254\u9664\u7279\u5f81x\u540e\u8bc4\u4ef7\u51fd\u6570\u503c\u8fbe\u5230\u6700\u4f18\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u5e8f\u5217\u540e\u5411\u9009\u62e9\u4e0e\u5e8f\u5217\u524d\u5411\u9009\u62e9\u6b63\u597d\u76f8\u53cd\uff0c\u5b83\u7684\u7f3a\u70b9\u662f\u7279\u5f81\u53ea\u80fd\u53bb\u9664\u4e0d\u80fd\u52a0\u5165\u3002<br \/>\n\u53e6\u5916\uff0cSFS\u4e0eSBS\u90fd\u5c5e\u4e8e\u8d2a\u5fc3\u7b97\u6cd5\uff0c\u5bb9\u6613\u9677\u5165\u5c40\u90e8\u6700\u4f18\u503c\u3002<br \/>\n<strong>\u3000\u3000(3)\u00a0<\/strong><strong>\u53cc\u5411\u641c\u7d22<\/strong><strong>(\u00a0BDS\u00a0,\u00a0Bidirectional\u00a0Search\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4f7f\u7528\u5e8f\u5217\u524d\u5411\u9009\u62e9(SFS)\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u540c\u65f6\u4f7f\u7528\u5e8f\u5217\u540e\u5411\u9009\u62e9(SBS)\u4ece\u5168\u96c6\u5f00\u59cb\u641c\u7d22\uff0c\u5f53\u4e24\u8005\u641c\u7d22\u5230\u4e00\u4e2a\u76f8\u540c\u7684\u7279\u5f81\u5b50\u96c6C\u65f6\u505c\u6b62\u641c\u7d22\u3002<br \/>\n\u53cc\u5411\u641c\u7d22\u7684\u51fa\u53d1\u70b9\u662f\u00a0\u00a0<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/d.hiphotos.baidu.com\/album\/pic\/item\/bba1cd11728b47100a73dc2dc3cec3fdfd0323f6.jpg\" width=\"82\" height=\"21\" \/>\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0cO\u70b9\u4ee3\u8868\u641c\u7d22\u8d77\u70b9\uff0cA\u70b9\u4ee3\u8868\u641c\u7d22\u76ee\u6807\u3002\u7070\u8272\u7684\u5706\u4ee3\u8868\u5355\u5411\u641c\u7d22\u53ef\u80fd\u7684\u641c\u7d22\u8303\u56f4\uff0c\u7eff\u8272\u76842\u4e2a\u5706\u8868\u793a\u67d0\u6b21\u53cc\u5411\u641c\u7d22\u7684\u641c\u7d22\u8303\u56f4\uff0c\u5bb9\u6613\u8bc1\u660e\u7eff\u8272\u7684\u9762\u79ef\u5fc5\u5b9a\u8981\u6bd4\u7070\u8272\u7684\u8981\u5c0f\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/d.hiphotos.baidu.com\/album\/pic\/item\/9358d109b3de9c8242d0d86e6c81800a18d8439d.jpg\" width=\"400\" height=\"336\" \/>\u56fe2.\u00a0\u53cc\u5411\u641c\u7d22<br \/>\n<strong>\u3000\u3000(4)\u00a0<\/strong><strong>\u589e<\/strong><strong>L<\/strong><strong>\u53bb<\/strong><strong>R<\/strong><strong>\u9009\u62e9\u7b97\u6cd5<\/strong><strong>(\u00a0LRS\u00a0,\u00a0Plus-L\u00a0Minus-R\u00a0Selection\u00a0)<\/strong><br \/>\n\u8be5\u7b97\u6cd5\u6709\u4e24\u79cd\u5f62\u5f0f:<br \/>\n&lt;1&gt;\u00a0\u7b97\u6cd5\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u6bcf\u8f6e\u5148\u52a0\u5165L\u4e2a\u7279\u5f81\uff0c\u7136\u540e\u4ece\u4e2d\u53bb\u9664R\u4e2a\u7279\u5f81\uff0c\u4f7f\u5f97\u8bc4\u4ef7\u51fd\u6570\u503c\u6700\u4f18\u3002(\u00a0L\u00a0&gt;\u00a0R\u00a0)<br \/>\n&lt;2&gt;\u00a0\u7b97\u6cd5\u4ece\u5168\u96c6\u5f00\u59cb\uff0c\u6bcf\u8f6e\u5148\u53bb\u9664R\u4e2a\u7279\u5f81\uff0c\u7136\u540e\u52a0\u5165L\u4e2a\u7279\u5f81\uff0c\u4f7f\u5f97\u8bc4\u4ef7\u51fd\u6570\u503c\u6700\u4f18\u3002(\u00a0L\u00a0&lt;\u00a0R\u00a0)<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u589eL\u53bbR\u9009\u62e9\u7b97\u6cd5\u7ed3\u5408\u4e86\u5e8f\u5217\u524d\u5411\u9009\u62e9\u4e0e\u5e8f\u5217\u540e\u5411\u9009\u62e9\u601d\u60f3\uff0cL\u4e0eR\u7684\u9009\u62e9\u662f\u7b97\u6cd5\u7684\u5173\u952e\u3002<br \/>\n<strong>\u3000\u3000(5)\u00a0<\/strong><strong>\u5e8f\u5217\u6d6e\u52a8\u9009\u62e9<\/strong><strong>(\u00a0Sequential\u00a0Floating\u00a0Selection\u00a0)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u5e8f\u5217\u6d6e\u52a8\u9009\u62e9\u7531\u589eL\u53bbR\u9009\u62e9\u7b97\u6cd5\u53d1\u5c55\u800c\u6765\uff0c\u8be5\u7b97\u6cd5\u4e0e\u589eL\u53bbR\u9009\u62e9\u7b97\u6cd5\u7684\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff1a\u5e8f\u5217\u6d6e\u52a8\u9009\u62e9\u7684L\u4e0eR\u4e0d\u662f\u56fa\u5b9a\u7684\uff0c\u800c\u662f\u201c\u6d6e\u52a8\u201d\u7684\uff0c\u4e5f\u5c31\u662f\u4f1a\u53d8\u5316\u7684\u3002<br \/>\n\u5e8f\u5217\u6d6e\u52a8\u9009\u62e9\u6839\u636e\u641c\u7d22\u65b9\u5411\u7684\u4e0d\u540c\uff0c\u6709\u4ee5\u4e0b\u4e24\u79cd\u53d8\u79cd\u3002<br \/>\n&lt;1&gt;\u5e8f\u5217\u6d6e\u52a8\u524d\u5411\u9009\u62e9(\u00a0SFFS\u00a0,\u00a0Sequential\u00a0Floating\u00a0Forward\u00a0Selection\u00a0)<br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u6bcf\u8f6e\u5728\u672a\u9009\u62e9\u7684\u7279\u5f81\u4e2d\u9009\u62e9\u4e00\u4e2a\u5b50\u96c6x\uff0c\u4f7f\u52a0\u5165\u5b50\u96c6x\u540e\u8bc4\u4ef7\u51fd\u6570\u8fbe\u5230\u6700\u4f18\uff0c\u7136\u540e\u5728\u5df2\u9009\u62e9\u7684\u7279\u5f81\u4e2d\u9009\u62e9\u5b50\u96c6z\uff0c\u4f7f\u5254\u9664\u5b50\u96c6z\u540e\u8bc4\u4ef7\u51fd\u6570\u8fbe\u5230\u6700\u4f18\u3002<br \/>\n&lt;2&gt;\u5e8f\u5217\u6d6e\u52a8\u540e\u5411\u9009\u62e9(\u00a0SFBS\u00a0,\u00a0Sequential\u00a0Floating\u00a0Backward\u00a0Selection\u00a0)<br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4e0eSFFS\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8eSFBS\u662f\u4ece\u5168\u96c6\u5f00\u59cb\uff0c\u6bcf\u8f6e\u5148\u5254\u9664\u7279\u5f81\uff0c\u7136\u540e\u52a0\u5165\u7279\u5f81\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u5e8f\u5217\u6d6e\u52a8\u9009\u62e9\u7ed3\u5408\u4e86\u5e8f\u5217\u524d\u5411\u9009\u62e9\u3001\u5e8f\u5217\u540e\u5411\u9009\u62e9\u3001\u589eL\u53bbR\u9009\u62e9\u7684\u7279\u70b9\uff0c\u5e76\u5f25\u8865\u4e86\u5b83\u4eec\u7684\u7f3a\u70b9\u3002<br \/>\n<strong>\u3000\u3000(6)\u00a0<\/strong><strong>\u51b3\u7b56\u6811<\/strong><strong>(\u00a0Decision\u00a0Tree\u00a0Method\u00a0,\u00a0DTM)<\/strong><br \/>\n<strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u3000\u3000\u00a0<\/strong>\u7b97\u6cd5\u63cf\u8ff0\uff1a\u5728\u8bad\u7ec3\u6837\u672c\u96c6\u4e0a\u8fd0\u884cC4.5\u6216\u5176\u4ed6\u51b3\u7b56\u6811\u751f\u6210\u7b97\u6cd5\uff0c\u5f85\u51b3\u7b56\u6811\u5145\u5206\u751f\u957f\u540e\uff0c\u518d\u5728\u6811\u4e0a\u8fd0\u884c\u526a\u679d\u7b97\u6cd5\u3002\u5219\u6700\u7ec8\u51b3\u7b56\u6811\u5404\u5206\u652f\u5904\u7684\u7279\u5f81\u5c31\u662f\u9009\u51fa\u6765\u7684\u7279\u5f81\u5b50\u96c6\u4e86\u3002\u51b3\u7b56\u6811\u65b9\u6cd5\u4e00\u822c\u4f7f\u7528\u4fe1\u606f\u589e\u76ca\u4f5c\u4e3a\u8bc4\u4ef7\u51fd\u6570\u3002<br \/>\n<strong>2.2.3\u00a0<\/strong><strong>\u968f\u673a\u7b97\u6cd5<\/strong><strong><br \/>\n<\/strong><br \/>\n<strong>\u3000\u3000(1)\u00a0<\/strong><strong>\u968f\u673a\u4ea7\u751f\u5e8f\u5217\u9009\u62e9\u7b97\u6cd5<\/strong><strong>(RGSS,\u00a0Random\u00a0Generation\u00a0plus\u00a0Sequential\u00a0Selection)<\/strong><br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u968f\u673a\u4ea7\u751f\u4e00\u4e2a\u7279\u5f81\u5b50\u96c6\uff0c\u7136\u540e\u5728\u8be5\u5b50\u96c6\u4e0a\u6267\u884cSFS\u4e0eSBS\u7b97\u6cd5\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u53ef\u4f5c\u4e3aSFS\u4e0eSBS\u7684\u8865\u5145\uff0c\u7528\u4e8e\u8df3\u51fa\u5c40\u90e8\u6700\u4f18\u503c\u3002<br \/>\n<strong>\u3000\u3000(2)\u00a0<\/strong><strong>\u6a21\u62df\u9000\u706b\u7b97\u6cd5<\/strong><strong>(\u00a0SA,\u00a0Simulated\u00a0Annealing\u00a0)<\/strong><br \/>\n\u6a21\u62df\u9000\u706b\u7b97\u6cd5\u53ef\u53c2\u8003\u00a0<a href=\"http:\/\/www.cnblogs.com\/heaad\/archive\/2010\/12\/20\/1911614.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u5927\u767d\u8bdd\u89e3\u6790\u6a21\u62df\u9000\u706b\u7b97\u6cd5<\/a>\u3002<br \/>\n\u7b97\u6cd5\u8bc4\u4ef7\uff1a\u6a21\u62df\u9000\u706b\u4e00\u5b9a\u7a0b\u5ea6\u514b\u670d\u4e86\u5e8f\u5217\u641c\u7d22\u7b97\u6cd5\u5bb9\u6613\u9677\u5165\u5c40\u90e8\u6700\u4f18\u503c\u7684\u7f3a\u70b9\uff0c\u4f46\u662f\u82e5\u6700\u4f18\u89e3\u7684\u533a\u57df\u592a\u5c0f\uff08\u5982\u6240\u8c13\u7684\u201c\u9ad8\u5c14\u592b\u7403\u6d1e\u201d\u5730\u5f62\uff09\uff0c\u5219\u6a21\u62df\u9000\u706b\u96be\u4ee5\u6c42\u89e3\u3002<strong><br \/>\n<\/strong><br \/>\n<strong>\u3000\u3000(3)\u00a0<\/strong><strong>\u9057\u4f20\u7b97\u6cd5<\/strong><strong>(\u00a0GA,\u00a0\u00a0Genetic\u00a0Algorithms\u00a0)<\/strong><br \/>\n\u9057\u4f20\u7b97\u6cd5\u53ef\u53c2\u8003\u00a0<a href=\"http:\/\/www.cnblogs.com\/heaad\/archive\/2010\/12\/23\/1914725.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u9057\u4f20\u7b97\u6cd5\u5165\u95e8<\/a>\u00a0\u3002<br \/>\n\u7b97\u6cd5\u63cf\u8ff0\uff1a\u9996\u5148\u968f\u673a\u4ea7\u751f\u4e00\u6279\u7279\u5f81\u5b50\u96c6\uff0c\u5e76\u7528\u8bc4\u4ef7\u51fd\u6570\u7ed9\u8fd9\u4e9b\u7279\u5f81\u5b50\u96c6\u8bc4\u5206\uff0c\u7136\u540e\u901a\u8fc7\u4ea4\u53c9\u3001\u7a81\u53d8\u7b49\u64cd\u4f5c\u7e41\u6b96\u51fa\u4e0b\u4e00\u4ee3\u7684\u7279\u5f81\u5b50\u96c6\uff0c\u5e76\u4e14\u8bc4\u5206\u8d8a\u9ad8\u7684\u7279\u5f81\u5b50\u96c6\u88ab\u9009\u4e2d\u53c2\u52a0\u7e41\u6b96\u7684\u6982\u7387\u8d8a\u9ad8\u3002\u8fd9\u6837\u7ecf\u8fc7N\u4ee3\u7684\u7e41\u6b96\u548c\u4f18\u80dc\u52a3\u6c70\u540e\uff0c\u79cd\u7fa4\u4e2d\u5c31\u53ef\u80fd\u4ea7\u751f\u4e86\u8bc4\u4ef7\u51fd\u6570\u503c\u6700\u9ad8\u7684\u7279\u5f81\u5b50\u96c6\u3002<br \/>\n\u968f\u673a\u7b97\u6cd5\u7684\u5171\u540c\u7f3a\u70b9\uff1a\u4f9d\u8d56\u4e8e\u968f\u673a\u56e0\u7d20\uff0c\u6709\u5b9e\u9a8c\u7ed3\u679c\u96be\u4ee5\u91cd\u73b0\u3002\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7279\u5f81\u9009\u62e9-\u5e38\u89c1\u7684\u641c\u7d22\u7b97\u6cd5 \u00a0\u672c\u6587\u8f6c\u8f7d\u81ea\uff1ahttp:\/\/hi.baidu.com\/zhangweijiqn\/item\/bafddc1bf53cd4f5756a843e 2.2.1\u5b8c\u5168\u641c\u7d22 \u5b8c\u5168\u641c\u7d22\u5206\u4e3a\u7a77\u4e3e\u641c\u7d22(Exhaustive)\u4e0e\u975e\u7a77\u4e3e\u641c\u7d22(Non-Exhaustive)\u4e24\u7c7b\u3002 \u3000\u3000(1)\u00a0\u5e7f\u5ea6\u4f18\u5148\u641c\u7d22(\u00a0Breadth\u00a0First\u00a0Search\u00a0) \u7b97\u6cd5\u63cf\u8ff0\uff1a\u5e7f\u5ea6\u4f18\u5148\u904d\u5386\u7279\u5f81\u5b50\u7a7a\u95f4\u3002 \u7b97\u6cd5\u8bc4\u4ef7\uff1a\u679a\u4e3e\u4e86\u6240\u6709\u7684\u7279\u5f81\u7ec4\u5408\uff0c\u5c5e\u4e8e\u7a77\u4e3e\u641c\u7d22\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u662fO(2n)\uff0c\u5b9e\u7528\u6027\u4e0d\u9ad8\u3002 \u3000\u3000(2)\u5206\u652f\u9650\u754c\u641c\u7d22(\u00a0Branch\u00a0and\u00a0Bound\u00a0)\u00a0 \u7b97\u6cd5\u63cf\u8ff0\uff1a\u5728\u7a77\u4e3e\u641c\u7d22\u7684\u57fa\u7840\u4e0a\u52a0\u5165\u5206\u652f\u9650\u754c\u3002\u4f8b\u5982\uff1a\u82e5\u65ad\u5b9a\u67d0\u4e9b\u5206\u652f\u4e0d\u53ef\u80fd\u641c\u7d22\u51fa\u6bd4\u5f53\u524d\u627e\u5230\u7684\u6700\u4f18\u89e3\u66f4\u4f18\u7684\u89e3\uff0c\u5219\u53ef\u4ee5\u526a\u6389\u8fd9\u4e9b\u5206\u652f\u3002 \u3000\u3000(3)\u00a0\u5b9a\u5411\u641c\u7d22(Beam\u00a0Search\u00a0) \u7b97\u6cd5\u63cf\u8ff0\uff1a\u9996\u5148\u9009\u62e9N\u4e2a\u5f97\u5206\u6700\u9ad8\u7684\u7279\u5f81\u4f5c\u4e3a\u7279\u5f81\u5b50\u96c6\uff0c\u5c06\u5176\u52a0\u5165\u4e00\u4e2a\u9650\u5236\u6700\u5927\u957f\u5ea6\u7684\u4f18\u5148\u961f\u5217\uff0c\u6bcf\u6b21\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u5f97\u5206\u6700\u9ad8\u7684\u5b50\u96c6\uff0c\u7136\u540e\u7a77\u4e3e\u5411\u8be5\u5b50\u96c6\u52a0\u51651\u4e2a\u7279\u5f81\u540e\u4ea7\u751f\u7684\u6240\u6709\u7279\u5f81\u96c6\uff0c\u5c06\u8fd9\u4e9b\u7279\u5f81\u96c6\u52a0\u5165\u961f\u5217\u3002 \u3000\u3000(4)\u00a0\u6700\u4f18\u4f18\u5148\u641c\u7d22(\u00a0Best\u00a0First\u00a0Search\u00a0) \u7b97\u6cd5\u63cf\u8ff0\uff1a\u4e0e\u5b9a\u5411\u641c\u7d22\u7c7b\u4f3c\uff0c\u552f\u4e00\u7684\u4e0d\u540c\u70b9\u662f\u4e0d\u9650\u5236\u4f18\u5148\u961f\u5217\u7684\u957f\u5ea6\u3002 2.2.2\u00a0\u542f\u53d1\u5f0f\u641c\u7d22 \u3000\u3000(1)\u5e8f\u5217\u524d\u5411\u9009\u62e9(\u00a0SFS\u00a0,\u00a0Sequential\u00a0Forward\u00a0Selection\u00a0) \u7b97\u6cd5\u63cf\u8ff0\uff1a\u7279\u5f81\u5b50\u96c6X\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u6bcf\u6b21\u9009\u62e9\u4e00\u4e2a\u7279\u5f81x\u52a0\u5165\u7279\u5f81\u5b50\u96c6X\uff0c\u4f7f\u5f97\u7279\u5f81\u51fd\u6570J(\u00a0X)\u6700\u4f18\u3002\u7b80\u5355\u8bf4\u5c31\u662f\uff0c\u6bcf\u6b21\u90fd\u9009\u62e9\u4e00\u4e2a\u4f7f\u5f97\u8bc4\u4ef7\u51fd\u6570\u7684\u53d6\u503c\u8fbe\u5230\u6700\u4f18\u7684\u7279\u5f81\u52a0\u5165\uff0c\u5176\u5b9e\u5c31\u662f\u4e00\u79cd\u7b80\u5355\u7684\u8d2a\u5fc3\u7b97\u6cd5\u3002 \u7b97\u6cd5\u8bc4\u4ef7\uff1a\u7f3a\u70b9\u662f\u53ea\u80fd\u52a0\u5165\u7279\u5f81\u800c\u4e0d\u80fd\u53bb\u9664\u7279\u5f81\u3002\u4f8b\u5982\uff1a\u7279\u5f81A\u5b8c\u5168\u4f9d\u8d56\u4e8e\u7279\u5f81B\u4e0eC\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u5982\u679c\u52a0\u5165\u4e86\u7279\u5f81B\u4e0eC\u5219A\u5c31\u662f\u591a\u4f59\u7684\u3002\u5047\u8bbe\u5e8f\u5217\u524d\u5411\u9009\u62e9\u7b97\u6cd5\u9996\u5148\u5c06A\u52a0\u5165\u7279\u5f81\u96c6\uff0c\u7136\u540e\u53c8\u5c06B\u4e0eC\u52a0\u5165\uff0c\u90a3\u4e48\u7279\u5f81\u5b50\u96c6\u4e2d\u5c31\u5305\u542b\u4e86\u591a\u4f59\u7684\u7279\u5f81A\u3002 &nbsp; \u3000\u3000(2)\u5e8f\u5217\u540e\u5411\u9009\u62e9(\u00a0SBS\u00a0,\u00a0Sequential\u00a0Backward\u00a0Selection\u00a0) 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\u7b97\u6cd5\u63cf\u8ff0\uff1a\u4f7f\u7528\u5e8f\u5217\u524d\u5411\u9009\u62e9(SFS)\u4ece\u7a7a\u96c6\u5f00\u59cb\uff0c\u540c\u65f6\u4f7f\u7528\u5e8f\u5217\u540e\u5411\u9009\u62e9(SBS)\u4ece\u5168\u96c6\u5f00\u59cb\u641c\u7d22\uff0c\u5f53\u4e24\u8005\u641c\u7d22\u5230\u4e00\u4e2a\u76f8\u540c\u7684\u7279\u5f81\u5b50\u96c6C\u65f6\u505c\u6b62\u641c\u7d22\u3002 \u53cc\u5411\u641c\u7d22\u7684\u51fa\u53d1\u70b9\u662f\u00a0\u00a0\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0cO\u70b9\u4ee3\u8868\u641c\u7d22\u8d77\u70b9\uff0cA\u70b9\u4ee3\u8868\u641c\u7d22\u76ee\u6807\u3002\u7070\u8272\u7684\u5706\u4ee3\u8868\u5355\u5411\u641c\u7d22\u53ef\u80fd\u7684\u641c\u7d22\u8303\u56f4\uff0c\u7eff\u8272\u76842\u4e2a\u5706\u8868\u793a\u67d0\u6b21\u53cc\u5411\u641c\u7d22\u7684\u641c\u7d22\u8303\u56f4\uff0c\u5bb9\u6613\u8bc1\u660e\u7eff\u8272\u7684\u9762\u79ef\u5fc5\u5b9a\u8981\u6bd4\u7070\u8272\u7684\u8981\u5c0f\u3002 \u56fe2.\u00a0\u53cc\u5411\u641c\u7d22 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