{"id":32,"date":"2016-09-24T00:35:32","date_gmt":"2016-09-23T15:35:32","guid":{"rendered":"http:\/\/www.stay-ko.be\/?p=32"},"modified":"2016-09-27T21:00:50","modified_gmt":"2016-09-27T12:00:50","slug":"oracle-cloud-meetup-r-beginner","status":"publish","type":"post","link":"http:\/\/stay-ko.be\/report\/oracle-cloud-meetup-r-beginner\/","title":{"rendered":"Oracle Cloud Meetup \u300cR\u8d85\u5165\u9580\u300d\u30ec\u30dd\u30fc\u30c8"},"content":{"rendered":"<p>\u5148\u65e5\u3001Oracle\u4e3b\u50ac\u306e\uff0a\uff0a\u300cR\u8d85\u5165\u9580\u3000\u6a5f\u68b0\u5b66\u7fd2\u3092\u306f\u3058\u3081\u3088\u3046\u300d**\u306b\u53c2\u52a0\u3057\u3066\u304d\u305f\u306e\u3067\u30ec\u30dd\u30fc\u30c8\u306b\u307e\u3068\u3081\u3066\u307f\u307e\u3059\u3002<br \/>\n\u5f53\u65e5\u306e\u8cc7\u6599\u306f<a href=\"http:\/\/www.slideshare.net\/OgawaMIKIO\/r-63470545\">\u3053\u3061\u3089<\/a>\u306b\u30a2\u30c3\u30d7\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u52c9\u5f37\u4f1a\u6982\u8981<\/h2>\n<p>\u8b1b\u5e2b\uff1a\u65e5\u672c\u30aa\u30e9\u30af\u30eb\u3000\u5c0f\u5ddd\u5e79\u96c4\uff08\u30aa\u30ac\u30ef\u30df\u30ad\u30aa\uff09\u3055\u3093<br \/>\n\u8b1b\u7fa9\u5185\u5bb9\uff1a\u300cR\u300d\u3068\u306f\u3001\u306b\u306f\u3058\u307e\u308a\u3001\u5404\u81ea\u306ePC\u306b\u300cR\u300d\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3001\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u3082\u3068\u306b\u4e88\u6e2c\u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n<h2>\u300cR\u300d\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff06\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n<p>\u300cR\u300d\u306f<a href=\"https:\/\/cran.ism.ac.jp\">\u7d71\u8a08\u6570\u7406\u7814\u7a76\u6240<\/a>\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3057\u305f\u3002\u79c1\u306e\u74b0\u5883\u306f Mac \u3067\u3057\u305f\u306e\u3067\u4f55\u3082\u8003\u3048\u308b\u3053\u3068\u306a\u304f\u6570\u30af\u30ea\u30c3\u30af\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u5b8c\u4e86\u3002\uff08Windows \u7248\u3067\u3082\u5225\u306b\u96e3\u3057\u304f\u306a\u3044\u611f\u3058\u3067\u3059\uff09<\/p>\n<h2>\u300cR\u300d\u3063\u3066\u306a\u306b\uff1f<\/h2>\n<ul>\n<li>\u7d71\u8a08\u89e3\u6790\u3068\u30d3\u30b8\u30e5\u30a2\u30e9\u30a4\u30ba\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\uff0f\u74b0\u5883\u3002\n<ul>\n<li>\u300c\u8a00\u8a9e\u300d\u3068\u306f\u8a00\u3044\u5207\u308a\u306b\u304f\u3044\u90e8\u5206\u3082\u3042\u308b\u306e\u3067\u3001\u300c\u74b0\u5883\u300d\u3068\u306e\u3053\u3068\u3002<\/li>\n<\/ul>\n<\/li>\n<li>GNU\u30e9\u30a4\u30bb\u30f3\u30b9\n<ul>\n<li>\u306a\u306e\u3067\u7121\u6599\u3067\u5229\u7528\u3067\u304d\u308b\u3051\u308c\u3069\u3001\u300cR\u300d\u3092\u7d44\u307f\u8fbc\u3093\u3067\u30d1\u30c3\u30b1\u30fc\u30b8\u30bd\u30d5\u30c8\u3092\u958b\u767a\u3059\u308b\u3068\u3001\u30e9\u30a4\u30bb\u30f3\u30b9\u898f\u7d04\u4e0a\u3001\u30bd\u30fc\u30b9\u516c\u958b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3001\u305d\u3046\u3044\u3063\u305f\u4f7f\u3044\u65b9\u3092\u8003\u3048\u3066\u308b\u4eba\u306f\u8981\u6ce8\u610f\uff08\u300cR\u300d\u306b\u9650\u3089\u305aGNU\u30e9\u30a4\u30bb\u30f3\u30b9\u306e\u8a71\uff09<\/li>\n<\/ul>\n<\/li>\n<li>CRAN\n<ul>\n<li>\u300cR\u300d\u306e\u6bcd\u4f53\u3002\u6700\u65b0\u60c5\u5831\u3092\u5f97\u305f\u3044\u306a\u3089\u3001\u3068\u308a\u3042\u3048\u305aCRAN\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3068\u3051\u3070\u826f\u3044\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u306a\u305c\u4eca\u300cR\u300d\u306a\u306e\u304b<\/h2>\n<ul>\n<li><a href=\"http:\/\/spectrum.ieee.org\/computing\/software\/the-2015-top-ten-programming-languages\">2015 Top Ten Programming Languages<\/a> \u3067\u7b2c\uff16\u4f4d\n<ul>\n<li>\u524d\u56de\uff19\u4f4d\u3060\u3063\u305f\u304c\u3001Ruby\u3001Javascript\u3001PHP\u3092\u629c\u3044\u305f<\/li>\n<li>\uff08<a href=\"http:\/\/spectrum.ieee.org\/computing\/software\/the-2016-top-programming-languages\">2016\u5e74\u7248<\/a>\u3067\u306f\u3001\u66f4\u306b\uff11Rank-up \u3057\u3066\u7b2c\uff15\u4f4d\u306e\u3088\u3046\u3067\u3059\uff09<\/li>\n<\/ul>\n<\/li>\n<li><a href=\"https:\/\/www.kaggle.com\/\">Kaggle<\/a>\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u30c4\u30fc\u30eb\u30e9\u30f3\u30ad\u30f3\u30b0\u3067\u306f\u3001\u30c0\u30f3\u30c8\u30c4\u306e\uff11\u4f4d<\/li>\n<\/ul>\n<h2>\u306a\u305cOracle\u304c\u300cR\u300d\u306e\u52c9\u5f37\u4f1a\u3092\uff1f<\/h2>\n<p>Oracle R Distribution \u3068\u3044\u3046\u88fd\u54c1\u3092\u5c55\u958b\u3002Oracle \u304c\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9R\u306e\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3002\u7121\u511fDL\u53ef\u80fd\u3001\u6709\u511f\u30b5\u30dd\u30fc\u30c8\u3002\u3042\u3068\u3001Oracle R Enterprise\u3068\u3044\u3046\u88fd\u54c1\u3082\u3002Oracle \u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u76f4\u63a5\u300cR\u300d\u306e\u64cd\u4f5c\u304c\u3067\u304d\u308b\u3089\u3057\u3044\u3002\u5185\u90e8\u7684\u306bSQL\u30af\u30a8\u30ea\u306b\u5909\u63db\u3057\u3066\u3001\u306a\u3093\u3068\u304b\u30ab\u30f3\u30c8\u30ab\u30fb\u30fb\u30fb\u3002\u6642\u9593\u306e\u90fd\u5408\u4e0a\u3001\u3055\u3089\u3063\u3068\u7d39\u4ecb\u7a0b\u5ea6\u3067\u3057\u305f\u3002\uff08\u81ea\u793e\u88fd\u54c1\u306e\u7d39\u4ecb\u3092\u5272\u611b\u3057\u3066\u3001\u30cf\u30f3\u30ba\u30aa\u30f3\u306b\u6642\u9593\u3068\u3063\u3066\u304f\u3060\u3055\u308b\u3042\u305f\u308a\u3001\u7537\u524d\u3067\u3057\u305f\uff01\uff09<\/p>\n<h2>\u300cR\u300d\u306e\u57fa\u672c<\/h2>\n<ul>\n<li>\u5909\u6570\u3078\u306e\u4ee3\u5165\u3084\u3001\u6570\u5024\u6f14\u7b97\u3001\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u306a\u3069\n<ul>\n<li><- \u3067\u3082 = \u3067\u3082\u4ee3\u5165\u306f\u3067\u304d\u308b\u304c\u3001R \u6280\u8853\u8005\u306f <- \u306b\u6163\u308c\u3066\u308b\u306e\u3067 = \u3060\u3068\u6238\u60d1\u3046\u3089\u3057\u3044\u3002\uff08\u3061\u306a\u307f\u306b -> \u3068\u3057\u3066\u3082\u4ee3\u5165\u53ef\u80fd\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u51fa\u529b\u306f print(\u5909\u6570\u540d) \u304b\u3001\u305d\u306e\u307e\u307e\u300c\u5909\u6570\u540d\u300d\u3092\u5b9f\u884c\u3059\u308c\u3070\u51fa\u529b\u3055\u308c\u308b<\/li>\n<li>\u300c\uff3e\u300d\u3067\u7d2f\u4e57\u3082\u8868\u73fe\u3067\u304d\u308b<\/li>\n<li>\u6570\u5b66\u57fa\u672c\u95a2\u6570\u3001\u7d71\u8a08\u57fa\u672c\u95a2\u6570\u304c\u6a19\u6e96\u3067\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\n<ul>\n<li>\u300c\u95a2\u6570\u540d(\u5f15\u6570)\u300d\u3067\u5b9f\u884c\u3002\u307e\u305f pi \u306a\u3069\u3082\u4e88\u7d04\u5909\u6570\u3068\u3057\u3066\u767b\u9332\u3055\u308c\u3066\u3044\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u300cR\u300d\u306e\u30c7\u30fc\u30bf\u69cb\u9020<\/h2>\n<h3>\u30d9\u30af\u30c8\u30eb\uff08\u914d\u5217\u306e\u3053\u3068\uff09\u3001\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u306e\u64cd\u4f5c\u306b\u3064\u3044\u3066<\/h3>\n<ul>\n<li>c(\u8981\u7d201,\u8981\u7d202,\u8981\u7d203,\u2026)\u3067\u5b9a\u7fa9\u3002\n<ul>\n<li>\u8981\u7d20\u3092<code>c(1:6)<\/code>\u306e\u3088\u3046\u306b\u66f8\u3051\u3070\u3001\u300c1 2 3 4 5 6\u300d \u3068\u898f\u5247\u6027\u306e\u3042\u308b\u6570\u5b57\u304c\u5165\u308b<\/li>\n<\/ul>\n<\/li>\n<li>\u578b\u306f\u81ea\u52d5\u3067\u5224\u5225<br \/>\n-\u540c\u3058\u578b\u3057\u304b\u3044\u308c\u308b\u3053\u3068\u306f\u51fa\u6765\u306a\u3044\u306e\u3067\u3001\u4f8b\u3048\u3070 <code>c(1, 2 ,'a')<\/code> \u306e\u3088\u3046\u306b\u5165\u308c\u308b\u3068\u3001\u6587\u5b57\u5217\u3068\u3057\u3066 1, 2 \u306f\u6271\u308f\u308c\u308b\u3053\u3068\u306b\u306a\u308b\u3002<\/li>\n<li>\u30d9\u30af\u30c8\u30eb\u3092\u675f\u306b\u3057\u3066\u3001\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u306b\u3059\u308b\u3002<\/li>\n<li>\u5404\u884c\u30fb\u5217\u306f\u30e9\u30d9\u30eb\u540d\u3092\u5fc5\u305a\u3082\u3064\u3002<\/li>\n<\/ul>\n<pre><code class=\"r\">df &lt;- data.frame(ID = c(1:3), Name = c(\"\u5c71\u7530\",\"\u4f50\u85e4\",\"\u9234\u6728\"))\n<\/code><\/pre>\n<p>\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u4f5c\u308b\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u5909\u6570\u540d\u3092\u5b9f\u884c\u3059\u308c\u3070\u8868\u793a\u3055\u308c\u308b\u3002<\/p>\n<blockquote><p>\n  &#62; df<br \/>\n  \u3000ID Name<br \/>\n  \u30001 \u5c71\u7530<br \/>\n  \u30002 \u4f50\u85e4<br \/>\n  \u30003 \u9234\u6728\n<\/p><\/blockquote>\n<h3>\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u64cd\u4f5c<\/h3>\n<blockquote><p>\n  &#62; df$ID<br \/>\n  [1] 1 2 3<br \/>\n  &#62; df[1,]<br \/>\n  ID Name<br \/>\n  1 \u5c71\u7530<br \/>\n  &#62; df[,2]<br \/>\n  [1] \u5c71\u7530 \u4f50\u85e4 \u9234\u6728<br \/>\n  Levels: \u4f50\u85e4 \u5c71\u7530 \u9234\u6728<br \/>\n  &#62; df[1,-2]<br \/>\n  [1] 1\n<\/p><\/blockquote>\n<p>$ \u306f\u30e9\u30d9\u30eb\u3092\u62bd\u51fa\u3002<br \/>\n[1, ] \u306f 1\u884c\u76ee\u3092\u62bd\u51fa\u3002<br \/>\n[ ,2] \u306f 2\u5217\u76ee\u3092\u62bd\u51fa\u3002Levels\uff1a\u301c\u3000\u306f\u3001\u5168\u90e8\u3067\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\uff08\u30ab\u30c6\u30b4\u30ea\uff1f\uff09\u304c\u3042\u308b\u3053\u3068\u3092\u8868\u73fe\u3057\u3066\u3044\u308b\u3002\u30c7\u30fc\u30bf\uff13\u3064\u3067\u3001\uff13\u3064\u3068\u3082\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u5224\u308a\u306b\u304f\u3044\u4f8b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3001\u3001\u3001\u3002<br \/>\n[1,-2] \u306f1\u884c\u76ee\u30fb2\u5217\u76ee\u4ee5\u5916\u3092\u62bd\u51fa\u3002<\/p>\n<h2>\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f<\/h2>\n<p>\u4eca\u56de\u306f csv \u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u3001\u305d\u306e\u307e\u307e\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3068\u3057\u3066\u4f7f\u7528\u3002read.table \u3001read.csv \u306a\u3069\u8aad\u307f\u8fbc\u307f\u30b3\u30de\u30f3\u30c9\u306f\u3044\u304f\u3064\u304b\u3042\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u304c\u7570\u306a\u308b\u306e\u3067\u72b6\u6cc1\u306b\u3042\u308f\u305b\u3066\u4f7f\u3044\u5206\u3051\u3002<\/p>\n<pre><code class=\"r\">\uff44\uff46_default &lt;- read.table(\"creditdefault.csv\", skip = 1, header = T, sep = \",\")\n<\/code><\/pre>\n<p>skip \u306f1\u884c\u76ee\u3092\u3068\u3070\u3059\u3002<br \/>\n<code>header = T \uff08T \u306f TRUE \uff09<\/code>\u306f\u6700\u521d\u306e\u884c\u3092\u30e9\u30d9\u30eb\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3002\u306a\u306e\u3067\u3001\u3044\u304d\u306a\u308a\u30c7\u30fc\u30bf\u304b\u3089\u59cb\u307e\u308b\u3088\u3046\u306a\u30c7\u30fc\u30bf\u3067\u306f\u3001<code>header = F\uff08FALSE\uff09<\/code>\u3068\u3059\u308b\u3002<br \/>\n<code>sep = \",\"<\/code> \u306f\u3001\u30ab\u30f3\u30de\u3092\u533a\u5207\u308a\u6587\u5b57\u3068\u3059\u308b\u3002<\/p>\n<h2>\u300cR\u300d\u3067\u30b0\u30e9\u30d5\u63cf\u5199<\/h2>\n<ul>\n<li>\u6a19\u6e96\u3067\u4f5c\u56f3\u95a2\u6570 plot \u304c\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u3042\u307e\u308a\u4f7f\u308f\u306a\u3044\n<ul>\n<li>R\u306b\u304a\u3051\u308b\u30c7\u30d5\u30a1\u30af\u30c8\u30fb\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\u306f <strong>ggplot2<\/strong> \u306a\u306e\u3067\u5165\u308c\u3066\u304a\u304f\u3079\u304d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre><code class=\"r\">install.packages(\"ggplot2\", dep=T)\nlibrary(ggplot2)\n<\/code><\/pre>\n<p><code>dep=T<\/code> \u306f\u4f9d\u5b58\u30d1\u30c3\u30b1\u30fc\u30b8\u3082\u3042\u308f\u305b\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u6307\u5b9a\u3002<br \/>\n<code>library(\u95a2\u6570\u540d)<\/code>\u306f\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u95a2\u6570\u3092\u8aad\u307f\u8fbc\u307f\u3002<\/p>\n<p>\u6570\u5b57\u578b\u3092\u30d5\u30e9\u30b0\u3068\u3057\u3066\u6271\u3046\u5834\u5408\u306f\u3001factor\u95a2\u6570\u3092\u4f7f\u3046\u3002<\/p>\n<blockquote><p>\n  &#62; x <- c(1,0,99)\n  \\> y <- factor(c(1,0,99))\n  \\> x<br \/>\n  [1] 1 0 99<br \/>\n  &#62; y<br \/>\n  [1] 1 0 99<br \/>\n  Levels: 0 1 99<br \/>\n  \u300c\uff11:\u7570\u5e38\u30000:\u6b63\u5e38\u300099:\u4e0d\u660e\u300d\u306e\u3088\u3046\u306b\u3001\u30d5\u30e9\u30b0\u3068\u3057\u3066\u6570\u5024\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u6570\u5024\u3068\u3057\u3066\u6271\u308f\u306a\u3044\u3053\u3068\u3092\u6307\u5b9a\u3059\u308b\u3002\n<\/p><\/blockquote>\n<h2>\u300cR\u300d\u3067\u6a5f\u68b0\u5b66\u7fd2\u3092\u4f7f\u3063\u3066\u4e88\u6e2c\u30e2\u30c7\u30eb\u3092\u4f5c\u6210<\/h2>\n<p>\u305d\u306e\u524d\u306b\u3001\u3001\u3001\u3002<br \/>\n\u4f7f\u7528\u3057\u305f\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306f\u8b1b\u5e2b\u306e\u65b9\u304c\u3059\u3067\u306b\u6574\u5f62\u3057\u305f\u30ad\u30ec\u30a4\u306a\u30c7\u30fc\u30bf\u3002\u672c\u6765\u306e\u30c7\u30fc\u30bf\u306f\u3082\u3063\u3068\u6c5a\u3044\uff08\u91cd\u8907\u3001\u30c7\u30fc\u30bf\u306e\u5185\u5bb9\u304c\u308f\u304b\u3089\u306a\u3044\u3001\u30c7\u30fc\u30bf\u306e\u6b20\u640d\u3001\u201d\u7537&#8221;\/&#8221;\u7537\u6027\u201d\/&#8221;Male&#8221; \u8868\u73fe\u304c\u30d0\u30e9\u30d0\u30e9\u2026etc\uff09\u6a5f\u68b0\u5b66\u7fd2\u3001Machine Learning\u3001\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u30fb\u30fb\u30fb\u83ef\u3084\u304b\u306a\u30a4\u30e1\u30fc\u30b8\u3092\u6301\u305f\u308c\u308b\u304c\u3001\u5b9f\u306f\u4f7f\u3048\u308b\u30c7\u30fc\u30bf\u306b\u4ed5\u4e0a\u3052\u308b\u307e\u3067\u306e\u30c7\u30fc\u30bf\u6574\u5f62\u306f\u304b\u306a\u308a\u6ce5\u81ed\u3044\u3001\u3068\u306e\u3053\u3068\u3067\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f\uff11\u3064\u306e\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u7528\u30c7\u30fc\u30bf\u3068\u3001\u30c6\u30b9\u30c8\u7528\u30c7\u30fc\u30bf\u306b\u4ed5\u5206\u3051\u3066\u4f7f\u7528\u3002sample\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e9\u30f3\u30c0\u30e0\u306b 6:4 \u306b\u5206\u3051\u305f\u3002<\/p>\n<pre><code class=\"r\">indexes &lt;- sample(1:nrow(df_default), size=0.4*nrow(df_default))\ntest &lt;- df_default[indexes, ]\ntrain &lt;- df_default[-indexes, ]\n<\/code><\/pre>\n<p>nrow \u306f\u5168\u884c\u6570\u3002<br \/>\nsample \u95a2\u6570\u3067\u30011\u884c\u76ee\u301c\u6700\u7d42\u884c(nrow)\u307e\u3067\u306e\u30c7\u30fc\u30bf\u306e\u5185\u300140%(0.4*nrow) \u3092indexes \u306b\u5165\u308c\u3066\u3044\u308b\u3002<br \/>\ntrain \u306b\u306f\u3001[-indexes, ] \u306740\uff05\u4ee5\u5916\u306e\u30c7\u30fc\u30bf\uff08\u3064\u307e\u308a 60%\uff09\u3092\u5165\u308c\u3066\u3044\u308b\u3002<\/p>\n<p>\u4e88\u6e2c\u30e2\u30c7\u30eb\u4f5c\u6210\u306b\u306f\u3001\u4eca\u56de\u30e9\u30f3\u30c0\u30e0\u30d5\u30a9\u30ec\u30b9\u30c8\u3092\u4f7f\u3044\u307e\u3057\u305f\u304c\u3001\u30e9\u30f3\u30c0\u30e0\u30d5\u30a9\u30ec\u30b9\u30c8\u306e\u30d9\u30fc\u30b9\u3068\u306a\u308b\u3001\u6c7a\u5b9a\u6728\u306b\u3064\u3044\u3066\u3082\u5b66\u7fd2\u3057\u307e\u3057\u305f\u3002<\/p>\n<h3>\u6c7a\u5b9a\u6728<\/h3>\n<ul>\n<li>\u30c7\u30fc\u30bf\u5185\u306e\u7279\u5fb4\u91cf\u304b\u3089\u7c21\u5358\u306a\u30eb\u30fc\u30eb\u3067\u5206\u5c90\u3092\u4f5c\u308a\u3001\u5224\u5225\u3084\u56de\u5e30\u30e2\u30c7\u30eb\u3092\u4f5c\u308b<\/li>\n<li>\u30b8\u30cb\u4fc2\u6570\u3084\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u306b\u57fa\u3044\u3066\u5206\u5272\n<ul>\n<li>\uff08\u6b63\u76f4\u3001\u306a\u3093\u306e\u3053\u3063\u3061\u3083\u3088\u304f\u5224\u3063\u3066\u3044\u306a\u3044\u3002\u3002\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre><code class=\"r\">pre &lt;- predict(rp, test, type = \"class\")\ntes &lt;- test[,24]\n<\/code><\/pre>\n<blockquote><p>\n  &#62; table(tes,pre)<br \/>\n    pre<br \/>\n  tes     0    1<br \/>\n  0  8970  397<br \/>\n  1  1759  874\n<\/p><\/blockquote>\n<p><code>test[ , 24]<\/code> \u306f test \u30c7\u30fc\u30bf\u306e24\u5217\u76ee\u3001\u3053\u3053\u306b\u306f default \u306b\u306a\u3063\u305f\u4eba\u3001\u306a\u3063\u3066\u306a\u3044\u4eba\u306e\u30d5\u30e9\u30b0\u304c\u5165\u3063\u3066\u307e\u3059\u3002<br \/>\ntable \u95a2\u6570\u3067\u30af\u30ed\u30b9\u8a08\u7b97\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a pre, tes \u304c\u5171\u306b 0 , 0 \u3060\u3063\u305f\u3082\u306e\u30011, 1 \u3060\u3063\u305f\u3082\u306e\u304c\u6b63\u89e3\u6570\u3002<br \/>\n<code>predict<\/code> \u306e type = class \u306f\u4f55\u3060\u3063\u305f\u304b\u306a\u3001\u3001\u3001\u3002\u8aac\u660e\u3092\u805e\u304d\u9003\u3057\u305f\u304b\u3001\u8aac\u660e\u304c\u306a\u304b\u3063\u305f\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\n\uff08\u3054\u5b58\u3058\u306e\u65b9\u304a\u3089\u308c\u307e\u3057\u305f\u3089\u3001\u30b3\u30e1\u30f3\u30c8\u306b\u3066\u6559\u3048\u3066\u304f\u3060\u3055\u3044\uff09<\/p>\n<h3>\u30e9\u30f3\u30c0\u30e0\u30d5\u30a9\u30ec\u30b9\u30c8<\/h3>\n<ul>\n<li>\u6c7a\u5b9a\u6728\u3092\u5f31\u5b66\u7fd2\u5668\u3068\u3059\u308b\u30a2\u30f3\u30b5\u30f3\u30d6\u30eb\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/li>\n<li>\u6c7a\u5b9a\u6728\u306b\u6bd4\u3079\u3066\u8ca0\u8377\u306f\u9ad8\u3044\u304c\u3001\u624b\u8efd\u3067\u9ad8\u7cbe\u5ea6\n<ul>\n<li>\u53e4\u304f\u304b\u3089\u3042\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3060\u304c\u3001\u307e\u3060\u73fe\u5f79\u3067\u591a\u304f\u306e\u5834\u9762\u3067\u4f7f\u308f\u308c\u3066\u308b<\/li>\n<li>\u3044\u304f\u3064\u3082\u306e\u6c7a\u5b9a\u6728\u5206\u6790\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u3067500\uff1f\uff09\u304b\u3089\u3001\u5f37\u5316\u5b66\u7fd2\uff08\u591a\u6570\u6c7a\uff09\u3059\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre><code class=\"r\">&gt; library(randomForest)\n&gt; rf &lt;- randomForest(factor(default)~., data = train, importance = T)\n<\/code><\/pre>\n<p><code>library(randomForest)<\/code> \u3067\u3001\u95a2\u6570\u3092\u8aad\u307f\u8fbc\u307f\u3002<\/p>\n<p>\u3042\u3068\u306f\u307b\u307c\u3001rpart \u3068\u540c\u3058\u3002importance \u306f\u91cd\u8981\u5ea6\u3092\u4e0e\u3048\u308b\u3093\u3067\u3057\u305f\u3063\u3051\uff1f<br \/>\n<code>importance = F<\/code>\u3060\u3068\u3001<strong>MeanDecreaseGini<\/strong>\u3000\u3068\u3044\u3046\u30af\u30e9\u30b9\u3060\u3051\u3067\u3057\u305f\u304c\u3001<code>importance = T<\/code> \u306b\u3059\u308b\u3068\u3001<strong>MeanDecreaseGini<\/strong> \u3068 <strong>MeanDecreaseAccuracy<\/strong>\u3000\u306e\uff12\u3064\u304c\u8868\u793a\u3055\u308c\u305f\u306e\u3067\u3001\u91cd\u8981\u5ea6\u306e\u5206\u6790\u624b\u6cd5\uff08\u6307\u6a19\uff1f\uff09\u304c\u4f55\u304b\u5897\u3048\u305f\u611f\u3058\u3067\u3057\u3087\u3046\u304b\uff1f\uff08\u3053\u308c\u307e\u305f\u8a73\u3057\u3044\u4eba\u3001\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u3002\uff09<\/p>\n<h3>\u300cR\u300dvs\u300cPython\u300d<\/h3>\n<ul>\n<li>R \u3068\u4e26\u3093\u3067\u6a5f\u68b0\u5b66\u7fd2\u8a00\u8a9e\u3068\u3055\u308c\u3066\u308b Python \u3002\u3044\u3063\u305f\u3044\u3001\u3069\u3063\u3061\u304c\u826f\u3044\u306e\u3068\u3044\u3046\u8a71\u3002\n<ul>\n<li>\u7d66\u6599\u306fR\u306e\u65b9\u304c\u9ad8\u3044\uff57<\/li>\n<li>R\u3067\u304d\u308b\u4eba\u3001Python\u3067\u304d\u308b\u4eba\u3001\u305d\u308c\u305e\u308c\u534a\u5206\u304f\u3089\u3044\u306e\u4eba\u306f\u3069\u3061\u3089\u3082\u51fa\u6765\u308b<\/li>\n<li>\u30ec\u30dd\u30fc\u30c8\u5411\u3051\u306a\u3089\u300cR\u300d\u5411\u304d<\/li>\n<li>\u753b\u50cf\u3001\u6a5f\u68b0\u5b66\u7fd2\u3067\u30a2\u30d7\u30ea\u4f5c\u308b\u306a\u3089\u300cPython\u300d\u5411\u304d<\/li>\n<li>\u300cR\u300d\u3067\u3082\u3067\u304d\u308b\u304c\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u304c\u5727\u5012\u7684\u306b\u5c0f\u3055\u3044\uff08\uff1d\u60c5\u5831\u304c\u5c11\u306a\u3044\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3068\u3044\u3046\u3088\u3046\u306a\u611f\u3058\u3067\u3001\u3072\u3068\u3068\u304a\u308a\u300cR\u300d\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u30cf\u30f3\u30ba\u30aa\u30f3\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002\u300cR\u300d\u306e\u624b\u8efd\u3055\uff1f\uff08\u307b\u3093\u3068\u306f\u3082\u3063\u3068\u6ce5\u81ed\u3044\u3068\u3053\u308d\u304c\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u3051\u3069\u3001\u3001\uff09\u3068\u3001\u306a\u3093\u3068\u306a\u304f\u300c\u4ffa\u3001\u6a5f\u68b0\u5b66\u7fd2\u3067\u304d\u3066\u308b\u611f\u300d\u3092\u611f\u3058\u308b\u306b\u306f\u5341\u5206\u306a\u30bb\u30df\u30ca\u30fc\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u65e5\u3001Oracle\u4e3b\u50ac\u306e\uff0a\uff0a\u300cR\u8d85\u5165\u9580\u3000\u6a5f\u68b0\u5b66\u7fd2\u3092\u306f\u3058\u3081\u3088\u3046\u300d**\u306b\u53c2\u52a0\u3057\u3066\u304d\u305f&#8230; <a class=\"more-link\" href=\"http:\/\/stay-ko.be\/report\/oracle-cloud-meetup-r-beginner\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":2,"featured_media":107,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[10,11],"amp_validity":null,"amp_enabled":true,"_links":{"self":[{"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/posts\/32"}],"collection":[{"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":49,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/posts\/32\/revisions"}],"predecessor-version":[{"id":81,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/posts\/32\/revisions\/81"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/media\/107"}],"wp:attachment":[{"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/media?parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/categories?post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/stay-ko.be\/wp-json\/wp\/v2\/tags?post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}