{"id":6109,"date":"2024-06-06T20:20:57","date_gmt":"2024-06-06T12:20:57","guid":{"rendered":"https:\/\/t.n-years.com\/?p=6109"},"modified":"2024-06-06T20:20:58","modified_gmt":"2024-06-06T12:20:58","slug":"kmeans-%e8%81%9a%e7%b1%bb%e5%90%8e%e5%a6%82%e4%bd%95%e6%b8%85%e6%b4%97%ef%bc%8c%e6%89%8d%e8%83%bd%e4%bf%9d%e8%af%81%e5%9c%a8%e4%bf%9d%e6%8c%81%e5%a4%9a%e6%a0%b7%e6%80%a7%e4%b8%94%e5%87%8f%e5%b0%91","status":"publish","type":"post","link":"https:\/\/t.n-years.com\/?p=6109","title":{"rendered":"KMeans \u805a\u7c7b\u540e\u5982\u4f55\u6e05\u6d17\uff0c\u624d\u80fd\u4fdd\u8bc1\u5728\u4fdd\u6301\u591a\u6837\u6027\u4e14\u51cf\u5c11\u91cd\u590d"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u975e\u539f\u521b\uff0cChatGPT \u95ee\u7b54\u751f\u6210<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fdb\u884c\u6570\u636e\u6e05\u6d17\u548cKmeans\u805a\u7c7b\u540e\uff0c\u4e3a\u4e86\u5728\u4fdd\u6301\u591a\u6837\u6027\u7684\u57fa\u7840\u4e0a\u51cf\u5c11\u91cd\u590d\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u9884\u5904\u7406<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u53bb\u91cd<\/strong>\uff1a\u9996\u5148\uff0c\u786e\u4fdd\u6570\u636e\u96c6\u4e2d\u6ca1\u6709\u5b8c\u5168\u91cd\u590d\u7684\u6570\u636e\u8bb0\u5f55\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u5220\u9664\u5b8c\u5168\u76f8\u540c\u7684\u884c\u6765\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u7f3a\u5931\u503c\u5904\u7406<\/strong>\uff1a\u5904\u7406\u6570\u636e\u4e2d\u7684\u7f3a\u5931\u503c\uff0c\u53ef\u4ee5\u9009\u62e9\u5220\u9664\u7f3a\u5931\u503c\u8f83\u591a\u7684\u6837\u672c\u6216\u8005\u7528\u5408\u9002\u7684\u65b9\u6cd5\uff08\u5982\u5747\u503c\u586b\u5145\u3001\u63d2\u503c\u7b49\uff09\u586b\u8865\u7f3a\u5931\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6807\u51c6\u5316\u6570\u636e<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u5e94\u7528Kmeans\u4e4b\u524d\uff0c\u6807\u51c6\u5316\u6570\u636e\u662f\u5fc5\u8981\u7684\u3002\u6807\u51c6\u5316\u53ef\u4ee5\u4f7f\u6bcf\u4e2a\u7279\u5f81\u5bf9\u805a\u7c7b\u7684\u8d21\u732e\u5747\u7b49\uff0c\u9632\u6b62\u67d0\u4e9b\u7279\u5f81\u7531\u4e8e\u91cf\u7eb2\u8f83\u5927\u800c\u4e3b\u5bfc\u805a\u7c7b\u7ed3\u679c\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Kmeans\u805a\u7c7b<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9009\u62e9\u5408\u9002\u7684K\u503c\uff1a\u4f7f\u7528\u8098\u90e8\u6cd5\uff08Elbow Method\uff09\u3001\u8f6e\u5ed3\u7cfb\u6570\uff08Silhouette Score\uff09\u7b49\u65b9\u6cd5\u9009\u62e9\u6700\u4f18\u7684\u805a\u7c7b\u6570\u76eeK\u3002<\/li>\n\n\n\n<li>\u8fd0\u884cKmeans\u805a\u7c7b\u7b97\u6cd5\u5f97\u5230\u6bcf\u4e2a\u6837\u672c\u7684\u805a\u7c7b\u6807\u7b7e\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6e05\u6d17\u805a\u7c7b\u7ed3\u679c<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u79fb\u9664\u5197\u4f59\u6837\u672c<\/strong>\uff1a\u5bf9\u4e8e\u6bcf\u4e2a\u805a\u7c7b\u7ed3\u679c\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u68c0\u67e5\u76f8\u4f3c\u6027\u3002\u53ef\u4ee5\u8ba1\u7b97\u7c07\u5185\u6837\u672c\u4e4b\u95f4\u7684\u76f8\u4f3c\u5ea6\uff08\u5982\u6b27\u6c0f\u8ddd\u79bb\u3001\u4f59\u5f26\u76f8\u4f3c\u5ea6\u7b49\uff09\uff0c\u5bf9\u4e8e\u76f8\u4f3c\u5ea6\u8fc7\u9ad8\u7684\u6837\u672c\uff0c\u53ea\u4fdd\u7559\u4e00\u4e2a\u4ee3\u8868\u6027\u6837\u672c\uff0c\u79fb\u9664\u5176\u4ed6\u6837\u672c\u3002<\/li>\n\n\n\n<li><strong>\u4ee3\u8868\u6027\u6837\u672c\u9009\u62e9<\/strong>\uff1a\u5728\u6bcf\u4e2a\u7c07\u4e2d\u9009\u62e9\u6700\u80fd\u4ee3\u8868\u8be5\u7c07\u7279\u5f81\u7684\u6837\u672c\u3002\u53ef\u4ee5\u901a\u8fc7\u8ba1\u7b97\u6bcf\u4e2a\u6837\u672c\u5230\u7c07\u4e2d\u5fc3\u7684\u8ddd\u79bb\uff0c\u9009\u62e9\u8ddd\u79bb\u7c07\u4e2d\u5fc3\u6700\u8fd1\u7684\u6837\u672c\u4f5c\u4e3a\u4ee3\u8868\u6027\u6837\u672c\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7ef4\u6301\u591a\u6837\u6027<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6837\u672c\u591a\u6837\u6027<\/strong>\uff1a\u786e\u4fdd\u6bcf\u4e2a\u805a\u7c7b\u4e2d\u9009\u51fa\u7684\u4ee3\u8868\u6027\u6837\u672c\u5177\u6709\u4ee3\u8868\u6027\u548c\u591a\u6837\u6027\u3002\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u91c7\u6837\u7b56\u7565\u6765\u7ef4\u6301\u591a\u6837\u6027\uff0c\u4f8b\u5982\u9009\u53d6\u591a\u4e2a\u8ddd\u79bb\u7c07\u4e2d\u5fc3\u8f83\u8fd1\u4f46\u4e0d\u5b8c\u5168\u91cd\u5408\u7684\u6837\u672c\u3002<\/li>\n\n\n\n<li><strong>\u7279\u5f81\u591a\u6837\u6027<\/strong>\uff1a\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u786e\u4fdd\u7279\u5f81\u7684\u591a\u6837\u6027\uff0c\u4f8b\u5982\u901a\u8fc7\u7279\u5f81\u9009\u62e9\u6216\u7279\u5f81\u5de5\u7a0b\u6765\u63d0\u53d6\u6709\u610f\u4e49\u4e14\u4e0d\u5197\u4f59\u7684\u7279\u5f81\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\u4ee3\u7801\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import pandas as pd\nfrom sklearn.preprocessing import StandardScaler\nfrom sklearn.cluster import KMeans\nfrom sklearn.metrics import pairwise_distances_argmin_min\n\n# \u5047\u8bbe df \u662f\u539f\u59cb\u6570\u636e\u96c6\ndf = pd.read_csv('data.csv')\n\n# 1. \u53bb\u91cd\ndf.drop_duplicates(inplace=True)\n\n# 2. \u7f3a\u5931\u503c\u5904\u7406\uff08\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff09\ndf.fillna(df.mean(), inplace=True)\n\n# 3. \u6570\u636e\u6807\u51c6\u5316\nscaler = StandardScaler()\nX_scaled = scaler.fit_transform(df)\n\n# 4. Kmeans \u805a\u7c7b\nkmeans = KMeans(n_clusters=5, random_state=42)\nkmeans.fit(X_scaled)\nlabels = kmeans.labels_\n\n# 5. \u9009\u62e9\u4ee3\u8868\u6027\u6837\u672c\nclosest, _ = pairwise_distances_argmin_min(kmeans.cluster_centers_, X_scaled)\nrepresentative_samples = df.iloc&#91;closest]\n\n# 6. \u8f93\u51fa\u6e05\u6d17\u540e\u7684\u6570\u636e\ncleaned_data = representative_samples.copy()\ncleaned_data.to_csv('cleaned_data.csv', index=False)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8ff0\u6b65\u9aa4\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u4fdd\u6301\u6570\u636e\u591a\u6837\u6027\u7684\u540c\u65f6\uff0c\u51cf\u5c11\u91cd\u590d\u6837\u672c\uff0c\u5e76\u4fdd\u8bc1\u6570\u636e\u7684\u4ee3\u8868\u6027\u548c\u6e05\u6d01\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u975e\u539f\u521b\uff0cChatGPT \u95ee\u7b54\u751f\u6210 \u5728\u8fdb\u884c\u6570\u636e\u6e05\u6d17\u548cKmeans\u805a\u7c7b\u540e\uff0c\u4e3a\u4e86\u5728\u4fdd\u6301\u591a\u6837\u6027\u7684\u57fa\u7840\u4e0a\u51cf\u5c11\u91cd\u590d\uff0c\u53ef\u4ee5\u91c7&#8230; <\/p>\n<div class=\"read-more navbutton\"><a href=\"https:\/\/t.n-years.com\/?p=6109\">\u9605\u8bfb\u66f4\u591a<i class=\"fa fa-angle-double-right\"><\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[53,56,51],"class_list":["post-6109","post","type-post","status-publish","format-standard","hentry","category-5","tag-llm","tag-56","tag-51"],"_links":{"self":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6109"}],"version-history":[{"count":1,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6109\/revisions"}],"predecessor-version":[{"id":6110,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6109\/revisions\/6110"}],"wp:attachment":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}