{"id":436,"date":"2022-12-25T03:11:17","date_gmt":"2023-08-31T03:52:15","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/python%e7%a7%91%e5%ad%a6%e5%b7%a5%e5%85%b7%e7%ae%b1%e5%ad%a6%e4%b9%a0%e6%95%99%e7%a8%8b\/"},"modified":"2025-08-02T08:43:19","modified_gmt":"2025-08-02T00:43:19","slug":"python%e7%a7%91%e5%ad%a6%e5%b7%a5%e5%85%b7%e7%ae%b1%e5%ad%a6%e4%b9%a0%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/python%e7%a7%91%e5%ad%a6%e5%b7%a5%e5%85%b7%e7%ae%b1%e5%ad%a6%e4%b9%a0%e6%95%99%e7%a8%8b\/","title":{"rendered":"2023 Python\u79d1\u5b66\u8ba1\u7b97\u5de5\u5177\u7bb1\u5b8c\u5168\u6307\u5357\uff1aNumPy\u3001Pandas\u4e0eSciPy\u5b9e\u6218\u6559\u7a0b"},"content":{"rendered":"<h2>Scikit Learn &#8211; \u79d1\u5b66\u673a\u5668\u5b66\u4e60\u5e93<\/h2>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/1-0.png\" class='post-images' alt=\"Python Scikit Learn\u6559\u7a0b\" title=\"Python Scikit Learn\u6559\u7a0b\">\n<\/div>\n<h2>Python\u7684Scikit-learn\u7b80\u4ecb<\/h2>\n<p>Scikit-learn\u4e3b\u8981\u4f7f\u7528Python\u8fdb\u884c\u5f00\u53d1\uff0c\u5176\u4e2d\u4e00\u4e9b\u6838\u5fc3\u7b97\u6cd5\u4f7f\u7528Cython\u7f16\u5199\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u3002Scikit-learn\u4e13\u95e8\u7528\u4e8e\u6784\u5efa\u673a\u5668\u5b66\u4e60\u6a21\u578b\uff0c\u4e0d\u5efa\u8bae\u5c06\u5176\u7528\u4e8e\u8bfb\u53d6\u3001\u64cd\u4f5c\u548c\u603b\u7ed3\u6570\u636e\uff0c\u56e0\u4e3a\u6709\u5176\u4ed6\u66f4\u9002\u5408\u6b64\u76ee\u7684\u7684\u6846\u67b6\uff08\u5982Pandas\uff09\u53ef\u7528\u3002Scikit-learn\u662f\u5f00\u6e90\u8f6f\u4ef6\uff0c\u5e76\u91c7\u7528BSD\u8bb8\u53ef\u8bc1\u53d1\u5e03\u3002<\/p>\n<h3>\u5b89\u88c5Scikit-learn<\/h3>\n<p>\u5b89\u88c5Scikit-learn\u7684\u524d\u63d0\u662f\u60a8\u7684\u8bbe\u5907\u4e0a\u8fd0\u884c\u7740Python 2.7\u6216\u66f4\u9ad8\u7248\u672c\uff0c\u5e76\u5df2\u5b89\u88c5NumPy\uff081.8.2\u53ca\u4ee5\u4e0a\u7248\u672c\uff09\u548cSciPy\uff080.13.3\u53ca\u4ee5\u4e0a\u7248\u672c\uff09\u8f6f\u4ef6\u5305\u3002\u4e00\u65e6\u8fd9\u4e9b\u4f9d\u8d56\u8f6f\u4ef6\u5305\u5b89\u88c5\u5b8c\u6210\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884cScikit-learn\u7684\u5b89\u88c5\u4e86\u3002\u82e5\u8981\u901a\u8fc7pip\u8fdb\u884c\u5b89\u88c5\uff0c\u8bf7\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre class=\"post-pre\"><code>pip install scikit-learn\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u66f4\u559c\u6b22\u4f7f\u7528conda\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7conda\u8fdb\u884c\u5b89\u88c5\uff0c\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u5373\u53ef\uff1a<\/p>\n<pre class=\"post-pre\"><code>conda install scikit-learn\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528Scikit-Learn<\/h2>\n<p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u5c06scikit-learn\u5bfc\u5165\u5230\u60a8\u7684Python\u4ee3\u7801\u4e2d\uff0c\u4ee5\u4fbf\u5f00\u59cb\u4f7f\u7528\u5176\u529f\u80fd\u3002<\/p>\n<pre class=\"post-pre\"><code>import sklearn\r\n<\/code><\/pre>\n<h3>\u4f7f\u7528Scikit-learn\u8f7d\u5165\u6570\u636e\u96c6<\/h3>\n<p>\u8ba9\u6211\u4eec\u4ece\u52a0\u8f7d\u4e00\u4e2a\u6570\u636e\u96c6\u5f00\u59cb\u3002\u6211\u4eec\u5c06\u52a0\u8f7d\u4e00\u4e2a\u540d\u4e3aIris\uff08\u9e22\u5c3e\u82b1\uff09\u7684\u7ecf\u5178\u6570\u636e\u96c6\u3002\u8fd9\u4e2a\u6570\u636e\u96c6\u5305\u542b\u4e86\u5173\u4e8e\u9e22\u5c3e\u82b1\u4e0d\u540c\u6d4b\u91cf\u503c\u7684150\u4e2a\u89c2\u6d4b\u7ed3\u679c\u3002\u4e0b\u9762\u6211\u4eec\u6765\u770b\u770b\u5982\u4f55\u4f7f\u7528scikit-learn\u52a0\u8f7d\u8fd9\u4e2a\u6570\u636e\u96c6\u3002<\/p>\n<pre class=\"post-pre\"><code># \u5bfc\u5165scikit-learn\u6570\u636e\u96c6\u6a21\u5757\r\nfrom sklearn import datasets\r\n# \u52a0\u8f7d\u6570\u636e\r\niris = datasets.load_iris()\r\n# \u6253\u5370\u6570\u636e\u5f62\u72b6\u4ee5\u786e\u8ba4\u6570\u636e\u5df2\u52a0\u8f7d\r\nprint(iris.data.shape)\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/15-0.png\" class='post-images' alt=\"Python Scikit\u6570\u636e\u96c6\u52a0\u8f7d\" title=\"Python Scikit\u6570\u636e\u96c6\u52a0\u8f7d\u793a\u4f8b\">\n<\/div>\n<h3>\u4f7f\u7528Scikit-learn\u8fdb\u884cSVM\u5b66\u4e60\u548c\u9884\u6d4b<\/h3>\n<p>\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u52a0\u8f7d\u4e86\u6570\u636e\uff0c\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4ece\u4e2d\u5b66\u4e60\u5e76\u5728\u65b0\u6570\u636e\u4e0a\u8fdb\u884c\u9884\u6d4b\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\u76ee\u7684\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u4f30\u8ba1\u5668\uff08estimator\uff09\uff0c\u7136\u540e\u8c03\u7528\u5176fit\uff08\u62df\u5408\uff09\u65b9\u6cd5\u8fdb\u884c\u8bad\u7ec3\u3002<\/p>\n<pre class=\"post-pre\"><code>from sklearn import svm\r\nfrom sklearn import datasets\r\n# \u52a0\u8f7d\u6570\u636e\u96c6\r\niris = datasets.load_iris()\r\nclf = svm.LinearSVC()  # \u521b\u5efa\u7ebf\u6027\u652f\u6301\u5411\u91cf\u673a\u5206\u7c7b\u5668\r\n# \u4ece\u6570\u636e\u4e2d\u5b66\u4e60\r\nclf.fit(iris.data, iris.target)\r\n# \u5bf9\u65b0\u6570\u636e\u8fdb\u884c\u9884\u6d4b\r\nclf.predict([[ 5.0,  3.6,  1.3,  0.25]])\r\n# \u6a21\u578b\u7684\u53c2\u6570\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u5212\u7ebf\u7ed3\u5c3e\u7684\u5c5e\u6027\u6765\u8bbf\u95ee\r\nprint(clf.coef_)\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/19-0.png\" class='post-images' alt=\"Scikit Learn SVM\" title=\"Scikit Learn\u652f\u6301\u5411\u91cf\u673a\u793a\u4f8b\">\n<\/div>\n<h3>\u4f7f\u7528Scikit-Learn\u8fdb\u884c\u7ebf\u6027\u56de\u5f52<\/h3>\n<p>\u4f7f\u7528scikit-learn\u521b\u5efa\u5404\u79cd\u6a21\u578b\u76f8\u5f53\u7b80\u5355\u3002\u8ba9\u6211\u4eec\u4ee5\u4e00\u4e2a\u7b80\u5355\u7684\u7ebf\u6027\u56de\u5f52\u793a\u4f8b\u5f00\u59cb\u3002<\/p>\n<pre class=\"post-pre\"><code># \u5bfc\u5165\u7ebf\u6027\u56de\u5f52\u6a21\u578b\r\nfrom sklearn import linear_model\r\nreg = linear_model.LinearRegression()\r\n# \u4f7f\u7528\u6a21\u578b\u62df\u5408\u6570\u636e\r\nreg.fit([[0, 0], [1, 1], [2, 2]], [0, 1, 2])\r\n# \u67e5\u770b\u62df\u5408\u540e\u7684\u6570\u636e\u7cfb\u6570\r\nprint(reg.coef_)\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/23-0.png\" class='post-images' alt=\"Python Scikit Learn\u7ebf\u6027\u56de\u5f52\" title=\"Python Scikit Learn\u7ebf\u6027\u56de\u5f52\u793a\u4f8b\">\n<\/div>\n<h3>k-\u6700\u8fd1\u90bb\u5206\u7c7b\u5668<\/h3>\n<p>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4e00\u4e2a\u7b80\u5355\u7684\u5206\u7c7b\u7b97\u6cd5\u3002k-\u6700\u8fd1\u90bb\uff08k-NN\uff09\u5206\u7c7b\u5668\u4f7f\u7528\u57fa\u4e8e\u7403\u6811\u7684\u7b97\u6cd5\u6765\u8868\u793a\u8bad\u7ec3\u6837\u672c\uff0c\u5e76\u6839\u636e\u6837\u672c\u7684\u6700\u8fd1\u90bb\u8fdb\u884c\u5206\u7c7b\u3002<\/p>\n<pre class=\"post-pre\"><code>from sklearn import datasets\r\n# \u52a0\u8f7d\u6570\u636e\u96c6\r\niris = datasets.load_iris()\r\n# \u521b\u5efa\u5e76\u62df\u5408\u4e00\u4e2a\u6700\u8fd1\u90bb\u5206\u7c7b\u5668\r\nfrom sklearn import neighbors\r\nknn = neighbors.KNeighborsClassifier()\r\nknn.fit(iris.data, iris.target)\r\n# \u9884\u6d4b\u5e76\u6253\u5370\u7ed3\u679c\r\nresult = knn.predict([[0.1, 0.2, 0.3, 0.4]])\r\nprint(result)\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/27-0.png\" class='post-images' alt=\"Python Scikit Learn\u5206\u7c7b\" title=\"Python Scikit Learn k-\u6700\u8fd1\u90bb\u5206\u7c7b\u793a\u4f8b\">\n<\/div>\n<h3>K-means\u805a\u7c7b<\/h3>\n<p>K-means\u662f\u6700\u7b80\u5355\u7684\u805a\u7c7b\u7b97\u6cd5\u4e4b\u4e00\u3002\u8be5\u7b97\u6cd5\u5c06\u6570\u636e\u96c6\u5206\u6210&#8217;k&#8217;\u4e2a\u7c07\uff0c\u5e76\u5c06\u6bcf\u4e2a\u89c2\u6d4b\u503c\u5206\u914d\u5230\u6700\u8fd1\u7684\u7c07\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u8fed\u4ee3\u5b8c\u6210\u7684\uff0c\u76f4\u5230\u7c07\u4e2d\u5fc3\u6536\u655b\u3002\u5728\u4e0b\u9762\u7684\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2aK-means\u805a\u7c7b\u6a21\u578b\u3002<\/p>\n<pre class=\"post-pre\"><code>from sklearn import cluster, datasets\r\n# \u52a0\u8f7d\u6570\u636e\r\niris = datasets.load_iris()\r\n# \u521b\u5efak=3\u7684\u805a\u7c7b\r\nk = 3\r\nk_means = cluster.KMeans(k)\r\n# \u62df\u5408\u6570\u636e\r\nk_means.fit(iris.data)\r\n# \u6253\u5370\u7ed3\u679c\r\nprint(k_means.labels_[::10])  # \u6253\u5370\u6bcf10\u4e2a\u6837\u672c\u7684\u805a\u7c7b\u6807\u7b7e\r\nprint(iris.target[::10])      # \u6253\u5370\u6bcf10\u4e2a\u6837\u672c\u7684\u771f\u5b9e\u7c7b\u522b\r\n<\/code><\/pre>\n<div>\n    <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/65648cd6a4b2f92e6c73364e\/31-0.png\" class='post-images' alt=\"Python Scikit Learn\u805a\u7c7b\" title=\"Python Scikit Learn K-means\u805a\u7c7b\u793a\u4f8b\">\n<\/div>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5df2\u7ecf\u770b\u5230Scikit-Learn\u4f7f\u5f97\u4f7f\u7528\u591a\u79cd\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u53d8\u5f97\u7b80\u5355\u6613\u884c\u3002\u6211\u4eec\u901a\u8fc7\u5b9e\u4f8b\u5b66\u4e60\u4e86\u56de\u5f52\u3001\u5206\u7c7b\u548c\u805a\u7c7b\u7b49\u57fa\u672c\u673a\u5668\u5b66\u4e60\u4efb\u52a1\u3002Scikit-Learn\u4ecd\u5728\u6301\u7eed\u5f00\u53d1\u4e2d\uff0c\u7531\u5fd7\u613f\u8005\u56e2\u961f\u8fdb\u884c\u7ef4\u62a4\uff0c\u5e76\u5728\u6570\u636e\u79d1\u5b66\u793e\u533a\u4e2d\u5e7f\u53d7\u6b22\u8fce\u3002\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528Scikit-Learn\u6765\u89e3\u51b3\u81ea\u5df1\u7684\u673a\u5668\u5b66\u4e60\u95ee\u9898\u4e86\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scikit Learn &#8211; \u79d1\u5b66\u673a\u5668\u5b66\u4e60\u5e93 Python\u7684Scikit-learn\u7b80\u4ecb Scik [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[272,273,1367,1368,567],"class_list":["post-436","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-numpy","tag-pandas","tag-python","tag-scipy","tag-567"],"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>2023 Python\u79d1\u5b66\u8ba1\u7b97\u5de5\u5177\u7bb1\u5b8c\u5168\u6307\u5357\uff1aNumPy\u3001Pandas\u4e0eSciPy\u5b9e\u6218\u6559\u7a0b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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