{"id":297554,"date":"2024-05-20T16:30:43","date_gmt":"2024-05-20T08:30:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/297554.html"},"modified":"2024-05-20T16:30:51","modified_gmt":"2024-05-20T08:30:51","slug":"%e5%b8%83%e9%9a%86%e8%bf%87%e6%bb%a4%e5%99%a8%e7%9a%84%e8%af%af%e5%88%a4%e7%8e%87%e8%af%a5%e5%a6%82%e4%bd%95%e8%ae%a1%e7%ae%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/297554.html","title":{"rendered":"\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u8be5\u5982\u4f55\u8ba1\u7b97"},"content":{"rendered":"

\"\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u8be5\u5982\u4f55\u8ba1\u7b97\"<\/p>\n

\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u8ba1\u7b97\u53d6\u51b3\u4e8e\u591a\u4e2a\u56e0\u7d20\uff0c\u5305\u62ec\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u3001\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u4ee5\u53ca\u52a0\u5165\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5143\u7d20\u6570\u91cf\u3002\u6838\u5fc3\u89c2\u70b9\u5305\u62ec\uff1a\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u3001\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u3001\u4ee5\u53ca\u63d2\u5165\u7684\u5143\u7d20\u6570\u91cf<\/strong>\u3002\u5bf9\u4e8e\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u800c\u8a00\uff0c\u5b83\u5bf9\u8bef\u5224\u7387\u7684\u5f71\u54cd\u5c24\u4e3a\u91cd\u8981\u3002\u4f4d\u6570\u7ec4\u8d8a\u5927\uff0c\u5176\u80fd\u591f\u5b58\u50a8\u7684\u4fe1\u606f\u8d8a\u591a\uff0c\u4ece\u800c\u4f7f\u5f97\u6bcf\u6b21\u54c8\u5e0c\u7684\u7ed3\u679c\u5206\u5e03\u66f4\u52a0\u5747\u5300\uff0c\u51cf\u5c11\u4e86\u4e0d\u540c\u5143\u7d20\u54c8\u5e0c\u7ed3\u679c\u91cd\u53e0\u7684\u6982\u7387\uff0c\u56e0\u6b64\u53ef\u4ee5\u6709\u6548\u5730\u964d\u4f4e\u8bef\u5224\u7387\u3002\u4f46\u662f\uff0c\u8fd9\u4e5f\u610f\u5473\u7740\u9700\u8981\u6d88\u8017\u66f4\u591a\u7684\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\uff08M\uff09<\/h3>\n<\/p>\n

\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u76f4\u63a5\u51b3\u5b9a\u4e86\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5b58\u50a8\u80fd\u529b\u548c\u8bef\u5224\u7387\u3002\u7406\u8bba\u4e0a\uff0c\u4f4d\u6570\u7ec4\u8d8a\u5927\uff0c\u5176\u80fd\u591f\u5bb9\u7eb3\u7684\u5143\u7d20\u5c31\u8d8a\u591a\uff0c\u8bef\u5224\u7387\u4e5f\u76f8\u5e94\u964d\u4f4e\u3002\u4f46\u8fd9\u4e5f\u610f\u5473\u7740\u7a7a\u95f4\u4f7f\u7528\u589e\u52a0\u3002\u901a\u5e38\uff0c\u9009\u62e9\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u662f\u4e00\u4e2a\u6743\u8861\u5b58\u50a8\u7a7a\u95f4\u548c\u8bef\u5224\u7387\u7684\u95ee\u9898\u3002\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u5e94\u8be5\u6839\u636e\u9884\u671f\u5b58\u50a8\u7684\u5143\u7d20\u6570\u91cf\uff08n\uff09\u548c\u53ef\u63a5\u53d7\u7684\u8bef\u5224\u7387\uff08P\uff09\u6765\u8ba1\u7b97\u3002<\/p>\n<\/p>\n

\u4e00\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u6765\u8ba1\u7b97\u4f4d\u6570\u7ec4\u7684\u6700\u4f18\u5927\u5c0f\uff1a<\/p>\n

[M = -\\frac{n \\ln P}{(\\ln 2)^2}]<\/p>\n

\u5176\u4e2d\uff0c(M)\u662f\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u3001(n)\u662f\u8981\u63d2\u5165\u7684\u5143\u7d20\u6570\u91cf\u3001(P)\u662f\u53ef\u63a5\u53d7\u7684\u8bef\u5224\u7387\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\uff08K\uff09<\/h3>\n<\/p>\n

\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u4e5f\u662f\u5f71\u54cd\u5e03\u9686\u8fc7\u6ee4\u5668\u6027\u80fd\u7684\u5173\u952e\u56e0\u7d20\u3002\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u51b3\u5b9a\u4e86\u5bf9\u6bcf\u4e2a\u5143\u7d20\u5904\u7406\u65f6\uff0c\u8bbe\u7f6e\u6216\u68c0\u67e5\u4f4d\u6570\u7ec4\u4e2d\u4f4d\u7f6e\u7684\u591a\u5c11\u3002\u5982\u679c\u54c8\u5e0c\u51fd\u6570\u6570\u91cf\u8fc7\u591a\uff0c\u867d\u7136\u53ef\u4ee5\u51cf\u5c11\u8bef\u5224\u7387\uff0c\u4f46\u4f1a\u589e\u52a0\u8ba1\u7b97\u7684\u590d\u6742\u5ea6\u548c\u964d\u4f4e\u63d2\u5165\u4e0e\u67e5\u8be2\u7684\u6548\u7387\uff1b\u53cd\u4e4b\uff0c\u5219\u53ef\u80fd\u5bfc\u81f4\u4f4d\u6570\u7ec4\u4e2d\u7684\u51b2\u7a81\u589e\u52a0\uff0c\u4ece\u800c\u589e\u52a0\u8bef\u5224\u7387\u3002<\/p>\n<\/p>\n

\u54c8\u5e0c\u51fd\u6570\u7684\u6700\u4f18\u6570\u91cf\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\u5f97\u51fa\uff1a<\/p>\n

[K = \\frac{M}{n} \\ln 2]<\/p>\n

\u8fd9\u91cc\u7684(K)\u662f\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\uff0c(M)\u662f\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\uff0c(n)\u662f\u63d2\u5165\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u63d2\u5165\u5143\u7d20\u7684\u6570\u91cf\uff08N\uff09<\/h3>\n<\/p>\n

\u63d2\u5165\u5143\u7d20\u7684\u6570\u91cf\u76f4\u63a5\u5f71\u54cd\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u6027\u80fd\u3002\u5f53\u52a0\u5165\u66f4\u591a\u7684\u5143\u7d20\u540e\uff0c\u7531\u4e8e\u6bcf\u4e2a\u5143\u7d20\u90fd\u4f1a\u88ab\u6240\u6709\u7684\u54c8\u5e0c\u51fd\u6570\u6620\u5c04\u5230\u4f4d\u6570\u7ec4\u4e2d\u7684\u4e0d\u540c\u4f4d\u7f6e\uff0c\u8fd9\u5c31\u53ef\u80fd\u5bfc\u81f4\u4f4d\u6570\u7ec4\u4e2d\u67d0\u4e9b\u4f4d\u88ab\u591a\u4e2a\u5143\u7d20\u5171\u4eab\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u8bef\u5224\u7684\u51e0\u7387\u3002<\/p>\n<\/p>\n

\u56db\u3001\u8bef\u5224\u7387\u7684\u8ba1\u7b97<\/h3>\n<\/p>\n

\u8bef\u5224\u7387\u662f\u8861\u91cf\u5e03\u9686\u8fc7\u6ee4\u5668\u6548\u7387\u7684\u5173\u952e\u6307\u6807\u4e4b\u4e00\u3002\u8bef\u5224\u7387\u7684\u8ba1\u7b97\u4e3b\u8981\u4f9d\u8d56\u4e8e\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\u3001\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u4ee5\u53ca\u63d2\u5165\u5143\u7d20\u7684\u6570\u91cf\u3002\u7ecf\u5178\u7684\u8bef\u5224\u7387\u8ba1\u7b97\u516c\u5f0f\u662f\uff1a<\/p>\n

[P = \\left(1 – e^{-\\frac{K \\cdot N}{M}}\\right)^K]<\/p>\n

\u5176\u4e2d\uff0c(P)\u8868\u793a\u8bef\u5224\u7387\uff0c(N)\u4e3a\u63d2\u5165\u5143\u7d20\u7684\u6570\u91cf\uff0c(M)\u4e3a\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\uff0c(K)\u4e3a\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\u3002<\/p>\n<\/p>\n

\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u4e0e\u8fd9\u4e09\u4e2a\u56e0\u7d20\u7d27\u5bc6\u76f8\u5173<\/strong>\u3002\u901a\u8fc7\u5408\u7406\u8c03\u6574\u4f4d\u6570\u7ec4\u7684\u5927\u5c0f\uff08M\uff09\u3001\u54c8\u5e0c\u51fd\u6570\u7684\u6570\u91cf\uff08K\uff09\u4ee5\u53ca\u63a7\u5236\u63d2\u5165\u5143\u7d20\u7684\u6570\u91cf\uff08N\uff09\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5e73\u8861\u5b58\u50a8\u7a7a\u95f4\u3001\u5904\u7406\u6548\u7387\u548c\u8bef\u5224\u7387\u4e09\u8005\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u8fbe\u5230\u65e2\u5b9a\u7684\u6027\u80fd\u76ee\u6807\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u8bef\u5224\u7387\u4e0e\u6027\u80fd\u4f18\u5316<\/h3>\n<\/p>\n

\u4e3a\u4e86\u6700\u5c0f\u5316\u8bef\u5224\u7387\uff0c\u5728\u8bbe\u8ba1\u5e03\u9686\u8fc7\u6ee4\u5668\u65f6\u5e94\u8be5\u7efc\u5408\u8003\u8651\u548c\u4f18\u5316\u4e0a\u8ff0\u5404\u4e2a\u56e0\u7d20\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5e03\u9686\u8fc7\u6ee4\u5668\u901a\u5e38\u7528\u4e8e\u5feb\u901f\u67e5\u8be2\u67d0\u4e2a\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u4e00\u4e2a\u5927\u578b\u6570\u636e\u96c6\u4e2d\uff0c\u4f8b\u5982\u7f51\u7edc\u722c\u866b\u7684URL\u53bb\u91cd\u3001\u6570\u636e\u5e93\u67e5\u8be2\u7f13\u5b58\u7b49\u573a\u666f\u3002\u901a\u8fc7\u5408\u7406\u8bbe\u8ba1\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u53c2\u6570\uff0c\u53ef\u4ee5\u5728\u4fdd\u8bc1\u8f83\u4f4e\u8bef\u5224\u7387\u7684\u540c\u65f6\uff0c\u5b9e\u73b0\u9ad8\u6548\u7684\u67e5\u8be2\u548c\u5b58\u50a8\u3002<\/p>\n<\/p>\n

\u516d\u3001\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u8bef\u5224\u63a7\u5236<\/h3>\n<\/p>\n

\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8bef\u5224\u7387\u7684\u63a7\u5236\u5f80\u5f80\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u9700\u6c42\u6765\u8c03\u6574\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u4e9b\u5bf9\u8bef\u5224\u7387\u8981\u6c42\u4e0d\u9ad8\u7684\u5e94\u7528\u573a\u666f\u4e2d\uff0c\u53ef\u4ee5\u5bb9\u5fcd\u8f83\u9ad8\u7684\u8bef\u5224\u7387\u4ee5\u6362\u53d6\u66f4\u4f4e\u7684\u5b58\u50a8\u7a7a\u95f4\u6d88\u8017\u548c\u66f4\u9ad8\u7684\u5904\u7406\u6548\u7387\uff1b\u800c\u5728\u4e00\u4e9b\u5bf9\u51c6\u786e\u6027\u8981\u6c42\u6781\u9ad8\u7684\u573a\u666f\u4e0b\uff0c\u5219\u9700\u8981\u5c3d\u53ef\u80fd\u5730\u964d\u4f4e\u8bef\u5224\u7387\uff0c\u54ea\u6015\u662f\u4ee5\u727a\u7272\u4e00\u5b9a\u7684\u5b58\u50a8\u7a7a\u95f4\u548c\u5904\u7406\u6548\u7387\u4e3a\u4ee3\u4ef7\u3002<\/p>\n<\/p>\n

\u603b\u4e4b\uff0c\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u8ba1\u7b97\u662f\u4e00\u4e2a\u6d89\u53ca\u591a\u4e2a\u56e0\u7d20\u7684\u590d\u6742\u8fc7\u7a0b\u3002\u901a\u8fc7\u7406\u89e3\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u5de5\u4f5c\u539f\u7406\u548c\u8bbe\u8ba1\u53c2\u6570\u7684\u76f8\u4e92\u5f71\u54cd\uff0c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u8bbe\u8ba1\u548c\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668<\/strong>\uff0c\u5b9e\u73b0\u5728\u8bef\u5224\u7387\u548c\u8d44\u6e90\u6d88\u8017\u4e4b\u95f4\u7684\u6700\u4f73\u5e73\u8861\u3002<\/p>\n<\/p>\n

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

\u5982\u4f55\u8ba1\u7b97\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\uff1f<\/strong><\/p>\n

\u5e03\u9686\u8fc7\u6ee4\u5668\u7684\u8bef\u5224\u7387\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a\u8bef\u5224\u7387 = (1 – e^(-kn\/m))^k<\/p>\n

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