{"id":46450,"date":"2022-12-18T08:51:07","date_gmt":"2023-04-23T00:56:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/46450-2\/"},"modified":"2024-04-29T05:48:43","modified_gmt":"2024-04-28T21:48:43","slug":"46450-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/46450-2\/","title":{"rendered":""},"content":{"rendered":"<h1>\u521d\u3081\u306b<\/h1>\n<p>\u672c\u8a18\u4e8b\u3067\u306f<\/p>\n<ul class=\"post-ul\">Graphviz\u3092\u4f7f\u3063\u305f\u3053\u3068\u304c\u306a\u3044\u7b46\u8005\u304cjupyter-notebook\u3067Graphviz\u3092\u4f7f\u3046<\/ul>\n<p>\u3068\u3044\u3046\u5185\u5bb9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u30cd\u30c3\u30c8\u306b\u306fGraphviz\u306e\u4f7f\u3044\u65b9\u306a\u3069\u8272\u3005\u8f09\u3063\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">GraphViz\u306e\u30a8\u30e9\u30fc\u5bfe\u51e6\uff08GraphViz\u2019s executables not found\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Graphviz \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/ul>\n<p>\u3068\u304b\u3067\u3059\u3002\u4e0a\u8a18\u306e2\u3064\u306e\u8a18\u4e8b\u306e\u3069\u3061\u3089\u3067\u8a2d\u5b9a\u3057\u3066\u3082\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30b5\u30a4\u30c8\u3092\u898b\u3066\u307f\u3066\u3053\u308c\u3067\u3044\u3044\u304b\u306a\u3068\u611f\u3058\u305f\u3089\u305d\u308c\u3067\u3082\u305c\u3093\u305c\u3093\u5927\u4e08\u592b\u3067\u3059\u3002<br \/>\n\u4eca\u56de\u306f2\u3064\u306e\u8a18\u4e8b\u3092\u5c11\u3057\u30df\u30c3\u30af\u30b9\u3057\u3066\u74b0\u5883\u3092\u4f5c\u3063\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h1>Graphviz\u3068\u306f<\/h1>\n<p>\u521d\u3081\u306bGraphviz\u306b\u3064\u3044\u3066\u8efd\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u3092\u8981\u7d04\u3057\u305f\u5f62\u306b\u306a\u3063\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u30b0\u30e9\u30d5\u753b\u50cf\u306b\u5909\u63db\u3059\u308b\u30c4\u30fc\u30eb\u300cGraphviz\u300d\u3053\u3068\u306f\u3058\u3081<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Graphviz\u3068dot\u8a00\u8a9e\u3067\u30b0\u30e9\u30d5\u3092\u63cf\u304f\u65b9\u6cd5\u306e\u307e\u3068\u3081<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d64ca37434c4406d05806\/9-0.png\" alt=\"fig01.png\" \/><\/div>\n<blockquote><p>\u51fa\u5178\uff1a\u7d71\u8a08\u7684\u30c6\u30ad\u30b9\u30c8\u89e3\u6790(6)\uff5e\u8a9e\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5206\u6790\uff5e<\/p><\/blockquote>\n<p>\u4e0a\u306e\u56f3\u304c\u6709\u5411\u30b0\u30e9\u30d5\u3068\u7121\u5411\u30b0\u30e9\u30d5\u306e\u9055\u3044\u3067\u3059\u3002\u8a00\u8449\u3067\u8aac\u660e\u3059\u308b\u3068\u3001\u3042\u308b\u9802\u70b9\u304b\u3089\u5225\u306e\u9802\u70b9\u3078\u306e\u7279\u5b9a\u306e\u65b9\u5411\u304c\u6c7a\u3081\u3089\u308c\u3066\u3044\u308b\u304b\u3044\u306a\u3044\u304b\u3067\u3059\u3002\u4e0a\u306e\u56f3\u306e\u77e2\u5370\u304c\u3042\u308b\u304b\u306a\u3044\u304b\u3067\u3059\u306d\u3002<br \/>\n\u3064\u307e\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u9802\u70b9\u306e\u95a2\u4fc2\u6027\u304c\u56fa\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<br \/>\n\u4f8b\u3092\u6319\u3052\u308b\u3068\u3059\u308b\u306a\u3089\u3070\u3001\u6709\u5411\u30b0\u30e9\u30d5\u306f\u30cf\u30a4\u30d1\u30fc\u30ea\u30f3\u30af\u3001\u7121\u5411\u30b0\u30e9\u30d5\u306f\u96fb\u8eca\u306e\u8def\u7dda\u56f3\u306a\u3069\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u30cf\u30a4\u30d1\u30fc\u30ea\u30f3\u30af\u306f\u30af\u30ea\u30c3\u30af\u3057\u305f\u3089\u5143\u306e\u30da\u30fc\u30b8\u306b\u623b\u308b\u3053\u3068\u304c\u3067\u304d\u305a\uff08\u623b\u308b\u30dc\u30bf\u30f3\u306f\u8003\u3048\u306a\u3044\u3067\u4e0b\u3055\u3044\u7b11\uff09\u3001\u96fb\u8eca\u306f\u305d\u308c\u305e\u308c\u306e\u96a3\u308a\u5408\u3063\u305f\u99c5\u3092\u81ea\u7531\u306b\u884c\u304d\u6765\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>Graphviz\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n<p>\u4eca\u56de\u8a66\u3057\u305f\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306f2\u3064\u3042\u308a\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u516c\u5f0f\u30b5\u30a4\u30c8\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306e\u30da\u30fc\u30b8\u306b\u884c\u304f\u3068\u4e0a\u8a18\u30b5\u30a4\u30c8\u3067\u7d39\u4ecb\u3055\u308c\u3066\u3044\u305f\u3082\u306e\u3068\u306f\u9055\u3044\u307e\u3057\u305f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u516c\u5f0f\u30b5\u30a4\u30c8\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u65b9\u6cd5<\/ul>\n<\/li>\n<\/ul>\n<p>zip\u30d5\u30a1\u30a4\u30eb\u3092\u843d\u3068\u3059\u65b9\u6cd5\u3000zip\u30d5\u30a1\u30a4\u30eb\u5148\u306e\u30ea\u30f3\u30af\u304c\u6b7b\u3093\u3067\u307e\u3057\u305f<\/p>\n<p>\u3053\u306e2\u3064\u306e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<h3>\u516c\u5f0f\u30b5\u30a4\u30c8\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d64ca37434c4406d05806\/17-2.png\" alt=\"image.png\" \/><\/div>\n<p>### zip\u30d5\u30a1\u30a4\u30eb\u3092\u843d\u3068\u3059<br \/>\nzip\u30d5\u30a1\u30a4\u30eb\u3092\u843d\u3068\u3059\u306e\u306f\u3053\u3061\u3089\u306e\u30b5\u30a4\u30c8\u304b\u3089\u843d\u3068\u305b\u307e\u3059\u3002\u843d\u3068\u3057\u305f\u3089\u3001\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5c55\u958b\u3059\u308b\u3060\u3051\u3067\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n<h1>\u5b9f\u88c5<\/h1>\n<p>\u4eca\u56de\u306f\u30bf\u30a4\u30bf\u30cb\u30c3\u30af\u53f7\u306e\u751f\u304d\u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f7f\u3063\u3066\u6c7a\u5b9a\u6728\u306e\u30b0\u30e9\u30d5\u306e\u53ef\u8996\u5316\u3092\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3053\u3061\u3089\u306e\u65b9\u306e\u30b3\u30fc\u30c9\u3092\u53c2\u8003\u306b\u3057\u3066\u3044\u307e\u3059\u3002jupyter\u98a8\u306b\u5206\u3051\u3066\u66f8\u3044\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u5fc5\u8981\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f\u3067\u3059\u3002(user\u306e\u90e8\u5206\u306f\u5404\u81ea\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u540d\u3067\u3059)<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"n\">sklearn.tree<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">DecisionTreeClassifier<\/span> \r\n<span class=\"kn\">from<\/span> <span class=\"n\">sklearn.model_selection<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">train_test_split<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"n\">sklearn.metrics<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">roc_curve<\/span><span class=\"p\">,<\/span> <span class=\"n\">auc<\/span><span class=\"p\">,<\/span> <span class=\"n\">accuracy_score<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"n\">pandas<\/span> <span class=\"k\">as<\/span> <span class=\"n\">pd<\/span>\r\n\r\n<span class=\"kn\">from<\/span> <span class=\"n\">sklearn.tree<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">export_graphviz<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"n\">pydotplus<\/span> \r\n<span class=\"kn\">from<\/span> <span class=\"n\">io<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">StringIO<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"n\">IPython.display<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Image<\/span>\r\n\r\n<span class=\"c1\"># \u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f \r\n<\/span><span class=\"n\">train<\/span> <span class=\"o\">=<\/span> <span class=\"n\">pd<\/span><span class=\"p\">.<\/span><span class=\"nf\">read_csv<\/span><span class=\"p\">(<\/span><span class=\"sh\">\"<\/span><span class=\"s\">\/Users\/user\/jupyter\/train.csv<\/span><span class=\"sh\">\"<\/span><span class=\"p\">)<\/span> \r\n<\/code><\/pre>\n<p>\u57fa\u672c\u7684\u306b\u4e00\u822c\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306f\u6b20\u640d\u5024\u304c\u3042\u308b\u305d\u3046\u306a\u306e\u3067\u78ba\u8a8d<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">train<\/span><span class=\"p\">.<\/span><span class=\"nf\">isnull<\/span><span class=\"p\">().<\/span><span class=\"nf\">sum<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<blockquote><p>PassengerId 0<br \/>\nSurvived 0<br \/>\nPclass 0<br \/>\nName 0<br \/>\nSex 0<br \/>\nAge 177<br \/>\nSibSp 0<br \/>\nParch 0<br \/>\nTicket 0<br \/>\nFare 0<br \/>\nCabin 687<br \/>\nEmbarked 2<\/p><\/blockquote>\n<p>Age\u3001Cabin\u3001Embarked\u306b\u6b20\u640d\u5024\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002\u4eca\u56de\u306fCabin\u306f\u4f7f\u308f\u306a\u3044\u306e\u3067\u7121\u8996\u3057\u307e\u3059\u3002<br \/>\nAge\u306e\u6b20\u640d\u5024\u306b\u306fAge\u5168\u4f53\u306e\u5e73\u5747\u3092\u88dc\u5b8c\u3057\u3001Embarked\u306b\u306f\u6700\u983b\u5024\u306e&#8221;S&#8221;\u3092\u88dc\u5b8c\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Age<\/span><span class=\"sh\">\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Age<\/span><span class=\"sh\">\"<\/span><span class=\"p\">].<\/span><span class=\"nf\">fillna<\/span><span class=\"p\">(<\/span><span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Age<\/span><span class=\"sh\">\"<\/span><span class=\"p\">].<\/span><span class=\"nf\">median<\/span><span class=\"p\">())<\/span>\r\n<span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Embarked<\/span><span class=\"sh\">\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Embarked<\/span><span class=\"sh\">\"<\/span><span class=\"p\">].<\/span><span class=\"nf\">fillna<\/span><span class=\"p\">(<\/span><span class=\"sh\">\"<\/span><span class=\"s\">S<\/span><span class=\"sh\">\"<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5b66\u7fd2\u3059\u308b\u969b\u306b\u306f\u3001int\u578b\u306b\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u3067\u6587\u5b57\u5217\u306e&#8217;Sex&#8217;\u3068&#8217;Embarked&#8217;\u3092\u6570\u5b57\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u4eca\u56de\u306f\u624b\u4f5c\u696d\u3067\u6570\u5b57\u3092\u5272\u308a\u5f53\u3066\u3066\u3044\u307e\u3059\u304c\u3001\u30c0\u30df\u30fc\u5909\u6570\u3092\u4f7f\u3063\u3066\u3082\u5909\u63db\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">#\u30ab\u30c6\u30b4\u30ea\u5909\u6570\u306e\u5909\u63db\r\n<\/span><span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">'<\/span><span class=\"s\">Sex<\/span><span class=\"sh\">'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">'<\/span><span class=\"s\">Sex<\/span><span class=\"sh\">'<\/span><span class=\"p\">].<\/span><span class=\"nf\">apply<\/span><span class=\"p\">(<\/span><span class=\"k\">lambda<\/span> <span class=\"n\">x<\/span><span class=\"p\">:<\/span> <span class=\"mi\">1<\/span> <span class=\"k\">if<\/span> <span class=\"n\">x<\/span> <span class=\"o\">==<\/span> <span class=\"sh\">'<\/span><span class=\"s\">male<\/span><span class=\"sh\">'<\/span> <span class=\"k\">else<\/span> <span class=\"mi\">0<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">'<\/span><span class=\"s\">Embarked<\/span><span class=\"sh\">'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">[<\/span><span class=\"sh\">'<\/span><span class=\"s\">Embarked<\/span><span class=\"sh\">'<\/span><span class=\"p\">].<\/span><span class=\"nf\">map<\/span><span class=\"p\">(<\/span> <span class=\"p\">{<\/span><span class=\"sh\">'<\/span><span class=\"s\">S<\/span><span class=\"sh\">'<\/span><span class=\"p\">:<\/span> <span class=\"mi\">0<\/span> <span class=\"p\">,<\/span> <span class=\"sh\">'<\/span><span class=\"s\">C<\/span><span class=\"sh\">'<\/span><span class=\"p\">:<\/span><span class=\"mi\">1<\/span> <span class=\"p\">,<\/span> <span class=\"sh\">'<\/span><span class=\"s\">Q<\/span><span class=\"sh\">'<\/span><span class=\"p\">:<\/span><span class=\"mi\">2<\/span><span class=\"p\">}).<\/span><span class=\"nf\">astype<\/span><span class=\"p\">(<\/span><span class=\"nb\">int<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u308f\u306a\u3044\u30af\u30e9\u30b9\u3092\u6d88\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">train<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">.<\/span><span class=\"nf\">drop<\/span><span class=\"p\">([<\/span><span class=\"sh\">'<\/span><span class=\"s\">Cabin<\/span><span class=\"sh\">'<\/span><span class=\"p\">,<\/span><span class=\"sh\">'<\/span><span class=\"s\">Name<\/span><span class=\"sh\">'<\/span><span class=\"p\">,<\/span><span class=\"sh\">'<\/span><span class=\"s\">PassengerId<\/span><span class=\"sh\">'<\/span><span class=\"p\">,<\/span><span class=\"sh\">'<\/span><span class=\"s\">Ticket<\/span><span class=\"sh\">'<\/span><span class=\"p\">],<\/span><span class=\"n\">axis<\/span> <span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u30c7\u30fc\u30bf\u306e\u524d\u51e6\u7406\u304c\u7d42\u308f\u3063\u305f\u306e\u3067\u4e00\u65e6\u6b20\u640d\u5024\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">train<\/span><span class=\"p\">.<\/span><span class=\"nf\">isnull<\/span><span class=\"p\">().<\/span><span class=\"nf\">sum<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<blockquote><p>Survived 0<br \/>\nPclass 0<br \/>\nSex 0<br \/>\nAge 0<br \/>\nSibSp 0<br \/>\nParch 0<br \/>\nFare 0<br \/>\nEmbarked 0<\/p><\/blockquote>\n<p>\u6b20\u640d\u5024\u3092\u306a\u304f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u6b21\u306btrain\u7528\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3068test\u7528\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u5206\u3051\u3066\u3044\u304d\u307e\u3059\u3002\u30c6\u30b9\u30c8\u306e\u753b\u50cf\u306e\u632f\u308a\u5206\u3051\u306f\u5168\u4f53\u306e3\u5272\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">#\u5b66\u7fd2\u30c7\u30fc\u30bf\u3068\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306b\u5206\u5272\r\n<\/span><span class=\"n\">train_X<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">.<\/span><span class=\"nf\">drop<\/span><span class=\"p\">(<\/span><span class=\"sh\">'<\/span><span class=\"s\">Survived<\/span><span class=\"sh\">'<\/span><span class=\"p\">,<\/span><span class=\"n\">axis<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">train_y<\/span> <span class=\"o\">=<\/span> <span class=\"n\">train<\/span><span class=\"p\">.<\/span><span class=\"n\">Survived<\/span>\r\n<span class=\"p\">(<\/span><span class=\"n\">train_X<\/span> <span class=\"p\">,<\/span> <span class=\"n\">test_X<\/span> <span class=\"p\">,<\/span> <span class=\"n\">train_y<\/span> <span class=\"p\">,<\/span> <span class=\"n\">test_y<\/span><span class=\"p\">)<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">train_test_split<\/span><span class=\"p\">(<\/span><span class=\"n\">train_X<\/span><span class=\"p\">,<\/span> <span class=\"n\">train_y<\/span> <span class=\"p\">,<\/span> <span class=\"n\">test_size<\/span> <span class=\"o\">=<\/span> <span class=\"mf\">0.3<\/span> <span class=\"p\">,<\/span> <span class=\"n\">random_state<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u30e2\u30c7\u30eb\u3092\u69cb\u7bc9\u3057\u3001\u5b66\u7fd2\u3092\u884c\u3044\u307e\u3059\u3002\u6df1\u3055\u306f3\u5c64\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">#train\r\n<\/span><span class=\"n\">model<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">DecisionTreeClassifier<\/span><span class=\"p\">(<\/span><span class=\"n\">max_depth<\/span><span class=\"o\">=<\/span><span class=\"mi\">3<\/span><span class=\"p\">,<\/span><span class=\"n\">random_state<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">model<\/span><span class=\"p\">.<\/span><span class=\"nf\">fit<\/span><span class=\"p\">(<\/span><span class=\"n\">train_X<\/span> <span class=\"p\">,<\/span> <span class=\"n\">train_y<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"c1\">#accuracy\r\n<\/span><span class=\"n\">pred<\/span> <span class=\"o\">=<\/span> <span class=\"n\">model<\/span><span class=\"p\">.<\/span><span class=\"nf\">predict<\/span><span class=\"p\">(<\/span><span class=\"n\">test_X<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">fpr<\/span><span class=\"p\">,<\/span> <span class=\"n\">tpr<\/span><span class=\"p\">,<\/span> <span class=\"n\">thresholds<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">roc_curve<\/span><span class=\"p\">(<\/span><span class=\"n\">test_y<\/span> <span class=\"p\">,<\/span> <span class=\"n\">pred<\/span><span class=\"p\">,<\/span><span class=\"n\">pos_label<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"nf\">auc<\/span><span class=\"p\">(<\/span><span class=\"n\">fpr<\/span><span class=\"p\">,<\/span><span class=\"n\">tpr<\/span><span class=\"p\">)<\/span>\r\n<span class=\"nf\">print<\/span><span class=\"p\">(<\/span><span class=\"sh\">\"<\/span><span class=\"s\">accuracy=<\/span><span class=\"sh\">\"<\/span><span class=\"p\">,<\/span><span class=\"nf\">accuracy_score<\/span><span class=\"p\">(<\/span><span class=\"n\">pred<\/span><span class=\"p\">,<\/span><span class=\"n\">test_y<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<blockquote><p>accuracy=0.8208955223880597<\/p><\/blockquote>\n<p>\u3053\u3053\u304b\u3089Graphviz\u3067\u63cf\u753b\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\"># \u6587\u5b57\u5217\u3092\u30d5\u30a1\u30a4\u30eb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u3088\u3046\u306b\u6271\u3046\u305f\u3081\u306e\u51e6\u7406\u3092\u3059\u308b\r\n<\/span><span class=\"n\">dot_data<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">StringIO<\/span><span class=\"p\">()<\/span> \r\n\r\n<span class=\"nf\">export_graphviz<\/span><span class=\"p\">(<\/span> \r\n    <span class=\"n\">model<\/span><span class=\"p\">,<\/span> <span class=\"n\">out_file<\/span><span class=\"o\">=<\/span><span class=\"n\">dot_data<\/span><span class=\"p\">,<\/span> \r\n    <span class=\"n\">feature_names<\/span><span class=\"o\">=<\/span><span class=\"n\">train_X<\/span><span class=\"p\">.<\/span><span class=\"n\">columns<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">class_names<\/span><span class=\"o\">=<\/span><span class=\"p\">[<\/span><span class=\"sh\">\"<\/span><span class=\"s\">Death<\/span><span class=\"sh\">\"<\/span><span class=\"p\">,<\/span> <span class=\"sh\">\"<\/span><span class=\"s\">Survival<\/span><span class=\"sh\">\"<\/span><span class=\"p\">]<\/span>\r\n<span class=\"p\">)<\/span> \r\n\r\n<span class=\"n\">graph<\/span> <span class=\"o\">=<\/span> <span class=\"n\">pydotplus<\/span><span class=\"p\">.<\/span><span class=\"nf\">graph_from_dot_data<\/span><span class=\"p\">(<\/span><span class=\"n\">dot_data<\/span><span class=\"p\">.<\/span><span class=\"nf\">getvalue<\/span><span class=\"p\">())<\/span> \r\n<span class=\"c1\">#graphviz\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u7d76\u5bfe\u30d1\u30b9\u3092\u6307\u5b9a \r\n<\/span><span class=\"n\">graph<\/span><span class=\"p\">.<\/span><span class=\"n\">progs<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span><span class=\"sh\">'<\/span><span class=\"s\">dot<\/span><span class=\"sh\">'<\/span><span class=\"p\">:<\/span> <span class=\"sa\">u<\/span><span class=\"sh\">\"<\/span><span class=\"s\">C:<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">Users<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">user<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">anaconda3<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">bin<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">release<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">bin<\/span><span class=\"se\">\\\\<\/span><span class=\"s\">dot.exe<\/span><span class=\"sh\">\"<\/span><span class=\"p\">}<\/span>\r\n<span class=\"c1\"># \u30ce\u30fc\u30c8\u30d6\u30c3\u30af\u306b\u53ef\u8996\u5316 \r\n<\/span><span class=\"nc\">Image<\/span><span class=\"p\">(<\/span><span class=\"n\">graph<\/span><span class=\"p\">.<\/span><span class=\"nf\">create_png<\/span><span class=\"p\">())<\/span> \r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d64ca37434c4406d05806\/42-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u6c7a\u5b9a\u6728\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h1>\u6700\u5f8c\u306b<\/h1>\n<p>\u4eca\u56de\u306fjupyter\u3092\u4f7f\u3063\u3066\u884c\u3044\u307e\u3057\u305f\u304c\u3001\u3082\u3061\u308d\u3093\u4ed6\u306eIDE\u3067\u3082\u53ef\u80fd\u3067\u3059\u3002\u3061\u306a\u307f\u306b\u3001\u4e00\u756a\u82e6\u52b4\u3057\u305f\u306e\u306f\u516c\u5f0f\u30b5\u30a4\u30c8\u304b\u3089\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u521d\u3081\u306b \u672c\u8a18\u4e8b\u3067\u306f Graphviz\u3092\u4f7f\u3063\u305f\u3053\u3068\u304c\u306a\u3044\u7b46\u8005\u304cjupyter-notebook\u3067Graphviz [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46450","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/46450-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u521d\u3081\u306b \u672c\u8a18\u4e8b\u3067\u306f Graphviz\u3092\u4f7f\u3063\u305f\u3053\u3068\u304c\u306a\u3044\u7b46\u8005\u304cjupyter-notebook\u3067Graphviz [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/46450-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-23T00:56:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-28T21:48:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d64ca37434c4406d05806\/9-0.png\" \/>\n<meta name=\"author\" content=\"\u65b0, \u97f5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u65b0, \u97f5\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script 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