{"id":132,"date":"2023-06-26T06:40:41","date_gmt":"2023-11-28T02:37:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e6%80%8e%e6%a0%b7%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e4%bd%bf%e7%94%a8predict%e5%87%bd%e6%95%b0\/"},"modified":"2025-08-01T00:24:18","modified_gmt":"2025-07-31T16:24:18","slug":"%e6%80%8e%e6%a0%b7%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e4%bd%bf%e7%94%a8predict%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%80%8e%e6%a0%b7%e5%9c%a8r%e7%bc%96%e7%a8%8b%e4%b8%ad%e4%bd%bf%e7%94%a8predict%e5%87%bd%e6%95%b0\/","title":{"rendered":"R\u8bed\u8a00predict()\u51fd\u6570\u8be6\u89e3\uff1a\u673a\u5668\u5b66\u4e60\u9884\u6d4b\u6a21\u578b\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<h3>\u7b80\u4ecb<\/h3>\n<p>\u5728R\u8bed\u8a00\u4e2d\uff0c<code>predict()<\/code> \u51fd\u6570\u7528\u4e8e\u6839\u636e\u8f93\u5165\u6570\u636e\u9884\u6d4b\u503c\u3002\u5728R\u7a0b\u5e8f\u7684\u6240\u6709\u5efa\u6a21\u573a\u666f\u4e2d\uff0c<code>predict()<\/code> \u51fd\u6570\u90fd\u4ee5\u5176\u72ec\u7279\u7684\u65b9\u5f0f\u53d1\u6325\u4f5c\u7528\uff0c\u4f46\u8bf7\u6ce8\u610f\uff0c\u65e0\u8bba\u5177\u4f53\u6848\u4f8b\u5982\u4f55\uff0c<code>predict()<\/code> \u51fd\u6570\u7684\u6838\u5fc3\u529f\u80fd\u59cb\u7ec8\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u60a8\u5c06\u5b66\u4e60\u5982\u4f55\u5728R\u8bed\u8a00\u4e2d\u4f7f\u7528<code>predict()<\/code> \u51fd\u6570\u3002<\/p>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5b8c\u6210\u672c\u6559\u7a0b\u6240\u9700\u7684\u6750\u6599\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5df2\u5b89\u88c5R\u8bed\u8a00\u73af\u5883\u3002<\/li>\n<\/ul>\n<h2>R \u4e2d predict() \u51fd\u6570\u7684\u8bed\u6cd5<\/h2>\n<p>\u5728R\u8bed\u8a00\u4e2d\uff0c<code>predict()<\/code> \u51fd\u6570\u7528\u4e8e\u57fa\u4e8e\u8f93\u5165\u6570\u636e\u9884\u6d4b\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>predict<span class=\"token punctuation\">(<\/span>object<span class=\"token punctuation\">,<\/span> newdata<span class=\"token punctuation\">,<\/span> interval<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<ul>\n<li><code>object<\/code>: \u7ee7\u627f\u81ea\u7ebf\u6027\u6a21\u578b\u7684\u5bf9\u8c61\u3002<\/li>\n<li><code>newdata<\/code>: \u7528\u4e8e\u9884\u6d4b\u503c\u7684\u8f93\u5165\u6570\u636e\u3002<\/li>\n<li><code>interval<\/code>: \u533a\u95f4\u8ba1\u7b97\u7684\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<h2>predict() \u51fd\u6570\u7684\u4e00\u4e2a\u793a\u4f8b<\/h2>\n<p>\u4e3a\u4e86\u9884\u6d4b\u6570\u503c\uff0c\u6211\u4eec\u9700\u8981\u6570\u636e\u3002\u9488\u5bf9\u672c\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u5728R\u4e2d\u5bfc\u5165\u5185\u7f6e\u6570\u636e\u96c6\u201cCars\u201d\u3002<\/p>\n<pre class=\"post-pre\"><code>df <span class=\"token operator\">&lt;-<\/span> datasets<span class=\"token operator\">::<\/span>cars\r\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u4e3a\u4e00\u4e2a\u6570\u636e\u6846\u5206\u914d\u4e00\u7ec4\u901f\u5ea6\uff08speed\uff09\u548c\u8ddd\u79bb\uff08dist\uff09\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>     speed dist\r\n1      4    2\r\n2      4   10\r\n3      7    4\r\n4      7   22\r\n5      8   16\r\n6      9   10\r\n7     10   18\r\n8     10   26\r\n9     10   34\r\n10    11   17\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4f7f\u7528<code>predict()<\/code> \u51fd\u6570\u6765\u5229\u7528\u8fd9\u4e9b\u6570\u636e\u9884\u6d4b\u672a\u6765\u7684\u503c\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4e3a\u8fd9\u4e2a\u6570\u636e\u6846\u8ba1\u7b97\u4e00\u4e2a\u7ebf\u6027\u6a21\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># \u521b\u5efa\u4e00\u4e2a\u7ebf\u6027\u6a21\u578b<\/span>\r\nmy_linear_model <span class=\"token operator\">&lt;-<\/span> lm<span class=\"token punctuation\">(<\/span>dist<span class=\"token operator\">~<\/span>speed<span class=\"token punctuation\">,<\/span> data <span class=\"token operator\">=<\/span> df<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u6253\u5370\u6a21\u578b\u7ed3\u679c<\/span>\r\nmy_linear_model\r\n<\/code><\/pre>\n<p>\u6267\u884c\u6b64\u4ee3\u7801\u5c06\u8ba1\u7b97\u7ebf\u6027\u6a21\u578b\u7684\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code>Call:\r\nlm(formula = dist ~ speed, data = df)\r\n\r\nCoefficients:\r\n(Intercept)        speed\r\n    -17.579        3.932\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u7ebf\u6027\u6a21\u578b\uff0c\u53ef\u4ee5\u6839\u636e\u8f93\u5165\u6570\u636e\u884c\u4e3a\u6765\u9884\u6d4b\u8f66\u8f86\u7684\u901f\u5ea6\u3002\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>predict()<\/code> \u51fd\u6570\u5e94\u7528\u8be5\u6a21\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># \u521b\u5efa\u4e00\u4e2a\u6570\u636e\u6846<\/span>\r\nvariable_speed <span class=\"token operator\">&lt;-<\/span> data.frame<span class=\"token punctuation\">(<\/span>speed <span class=\"token operator\">=<\/span> c<span class=\"token punctuation\">(<\/span><span class=\"token number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u62df\u5408\u7ebf\u6027\u6a21\u578b<\/span>\r\nlinear_model <span class=\"token operator\">&lt;-<\/span> lm<span class=\"token punctuation\">(<\/span>dist<span class=\"token operator\">~<\/span>speed<span class=\"token punctuation\">,<\/span> data <span class=\"token operator\">=<\/span> df<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u9884\u6d4b\u672a\u6765\u503c<\/span>\r\npredict<span class=\"token punctuation\">(<\/span>linear_model<span class=\"token punctuation\">,<\/span> newdata <span class=\"token operator\">=<\/span> variable_speed<span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4ea7\u751f\u4e86\u4ee5\u4e0b\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>       1        2        3        4        5\r\n25.67740 25.67740 29.60981 29.60981 29.60981\r\n       6        7        8        9       10\r\n29.60981 33.54222 33.54222 33.54222 33.54222\r\n<\/code><\/pre>\n<p>\u597d\u7684\uff0c\u6211\u4eec\u6839\u636e\u4e4b\u524d\u7684\u6570\u636e\uff0c\u5e76\u501f\u52a9\u7ebf\u6027\u6a21\u578b\u6210\u529f\u9884\u6d4b\u4e86\u672a\u6765\u7684\u8ddd\u79bb\u6570\u503c\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u9700\u8981\u67e5\u770b\u6211\u4eec\u9884\u6d4b\u503c\u4e2d\u7684\u201c\u7f6e\u4fe1\u5ea6\u201d\u6c34\u5e73\uff0c\u4ee5\u786e\u5b9a\u6211\u4eec\u7684\u9884\u6d4b\u51c6\u786e\u6027\u5982\u4f55\u3002<\/p>\n<h2>\u5bf9\u9884\u6d4b\u503c\u7684\u7f6e\u4fe1\u5ea6<\/h2>\n<p>\u5728<code>predict()<\/code> \u51fd\u6570\u4e2d\u4f7f\u7528\u7f6e\u4fe1\u533a\u95f4\u5c06\u5e2e\u52a9\u6211\u4eec\u8bc4\u4f30\u9884\u6d4b\u7684\u4e0d\u786e\u5b9a\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token comment\"># \u8f93\u5165\u6570\u636e<\/span>\r\nvariable_speed <span class=\"token operator\">&lt;-<\/span> data.frame<span class=\"token punctuation\">(<\/span>speed <span class=\"token operator\">=<\/span> c<span class=\"token punctuation\">(<\/span><span class=\"token number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u62df\u5408\u6a21\u578b<\/span>\r\nlinear_model <span class=\"token operator\">&lt;-<\/span> lm<span class=\"token punctuation\">(<\/span>dist<span class=\"token operator\">~<\/span>speed<span class=\"token punctuation\">,<\/span> data <span class=\"token operator\">=<\/span> df<span class=\"token punctuation\">)<\/span>\r\n\r\n<span class=\"token comment\"># \u9884\u6d4b\u503c\u5e76\u8ba1\u7b97\u7f6e\u4fe1\u533a\u95f4<\/span>\r\npredict<span class=\"token punctuation\">(<\/span>linear_model<span class=\"token punctuation\">,<\/span> newdata <span class=\"token operator\">=<\/span> variable_speed<span class=\"token punctuation\">,<\/span> interval <span class=\"token operator\">=<\/span> <span class=\"token string\">'confidence'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u751f\u6210\u4ee5\u4e0b\u8f93\u51fa\u3002<\/p>\n<pre class=\"post-pre\"><code>      fit      lwr      upr\r\n1  25.67740 19.96453 31.39028\r\n2  25.67740 19.96453 31.39028\r\n3  29.60981 24.39514 34.82448\r\n4  29.60981 24.39514 34.82448\r\n5  29.60981 24.39514 34.82448\r\n6  29.60981 24.39514 34.82448\r\n7  33.54222 28.73134 38.35310\r\n8  33.54222 28.73134 38.35310\r\n9  33.54222 28.73134 38.35310\r\n10 33.54222 28.73134 38.35310\r\n<\/code><\/pre>\n<p>\u60a8\u53ef\u4ee5\u5728\u4e0a\u9762\u7684\u8f93\u51fa\u4e2d\u770b\u5230\u6211\u4eec\u9884\u6d4b\u503c\u7684\u7f6e\u4fe1\u533a\u95f4\u3002<\/p>\n<p>\u4ece\u8fd9\u4e2a\u8f93\u51fa\u7ed3\u679c\u53ef\u4ee5\u9884\u6d4b\uff0c\u4ee511-13\u82f1\u91cc\/\u5c0f\u65f6\u7684\u901f\u5ea6\u884c\u9a76\u7684\u6c7d\u8f66\u6709\u53ef\u80fd\u884c\u9a7619.9\u523031.3\u82f1\u91cc\u7684\u8ddd\u79bb\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p><code>predict()<\/code> \u51fd\u6570\u901a\u8fc7\u5c06\u5148\u524d\u7684\u6570\u636e\u62df\u5408\u5230\u6a21\u578b\u4e2d\uff0c\u4ece\u800c\u57fa\u4e8e\u8fd9\u4e9b\u6570\u636e\u884c\u4e3a\u6765\u9884\u6d4b\u6570\u503c\u3002<\/p>\n<p>\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7f6e\u4fe1\u533a\u95f4\u6765\u68c0\u67e5\u6211\u4eec\u9884\u6d4b\u7684\u51c6\u786e\u6027\u3002<\/p>\n<h3>\u53c2\u8003\u6587\u732e<\/h3>\n<ul>\n<li>R \u5b98\u65b9\u6587\u6863<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u5728R\u8bed\u8a00\u4e2d\uff0cpredict() \u51fd\u6570\u7528\u4e8e\u6839\u636e\u8f93\u5165\u6570\u636e\u9884\u6d4b\u503c\u3002\u5728R\u7a0b\u5e8f\u7684\u6240\u6709\u5efa\u6a21\u573a\u666f\u4e2d\uff0cpredict() [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[598,586,599,370,600],"class_list":["post-132","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-predict","tag-r","tag-599","tag-370","tag-600"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\u8bed\u8a00predict()\u51fd\u6570\u8be6\u89e3\uff1a\u673a\u5668\u5b66\u4e60\u9884\u6d4b\u6a21\u578b\u5b9e\u6218\u6307\u5357 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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