{"id":11029,"date":"2017-07-05T10:10:01","date_gmt":"2017-07-05T01:10:01","guid":{"rendered":"http:\/\/sitest.jp\/blog\/?p=11029"},"modified":"2017-07-20T10:21:14","modified_gmt":"2017-07-20T01:21:14","slug":"%e6%95%99%e5%b8%ab%e3%81%aa%e3%81%97%e6%a9%9f%e6%a2%b0%e5%ad%a6%e7%bf%92%e3%80%81%e3%82%af%e3%83%a9%e3%82%b9%e3%82%bf%e3%83%aa%e3%83%b3%e3%82%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6%e8%80%83%e3%81%88","status":"publish","type":"post","link":"https:\/\/sitest.jp\/blog\/?p=11029","title":{"rendered":"\u6559\u5e2b\u306a\u3057\u6a5f\u68b0\u5b66\u7fd2\u3001\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u307f\u3088\u3046\uff01"},"content":{"rendered":"<p>\u8fd1\u5e74\u3001AI (Artificial Intelligence) \u304c\u69d8\u3005\u306a\u5206\u91ce\u3067\u3001\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u91cd\u8981\u306a\u6280\u8853\u3068\u3057\u3066\u3001\u6a5f\u68b0\u5b66\u7fd2 (Machine Learning) \u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<br \/>\n\u4e00\u822c\u7684\u306b\u6a5f\u68b0\u5b66\u7fd2 (Machine Learning) \u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u3066\u300c\u6559\u5e2b\u3042\u308a\u5b66\u7fd2\u300d\u3068\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3068\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u305d\u3053\u3067\u3001\u4eca\u56de\u306f\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3067\u3042\u308b\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p><!--more--><\/p>\n<div class=\"frame_headding\">\n<ul>\n<li>\n<h3 style=\"text-align: left;\">\u25a0 \u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3068\u306f\uff1f<\/h3>\n<\/li>\n<\/ul>\n<\/div>\n<p>\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4e2d\u3067\u306e\u4f3c\u3066\u3044\u308b\u6027\u8cea\u306e\u96c6\u307e\u308a\u3092\u898b\u51fa\u3059\u624b\u6cd5\u3068\u8a00\u3048\u3001\u4f3c\u305f\u3082\u306e\u96c6\u5408\u3092\u4f5c\u6210\u3059\u308b\u3068\u3044\u3046\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u308a\u3093\u3054\u3068\u30ec\u30e2\u30f3\u3068\u30d1\u30af\u30c1\u30fc\u3068\u9752\u30cd\u30ae\u306a\u3069\u306e\u98df\u54c1\u306e\u30c7\u30fc\u30bf\u3068\u3057\u3066\u5165\u624b\u3057\u305f\u5834\u5408\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3068\u3001\u98df\u54c1\u306e\u8272\u304c\u7279\u5fb4\u3068\u3057\u3066\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u3001\u30d1\u30af\u30c1\u30fc\u3068\u9752\u30cd\u30ae\u304c\u4f3c\u305f\u3082\u306e\u96c6\u5408\u3068\u3057\u3066\u3067\u3066\u304f\u308b\u3067\u3057\u3087\u3046\u3002\u7dd1\u8272\u306e\u7279\u5fb4\u306b\u3088\u3063\u3066\u4f3c\u305f\u3082\u306e\u3068\u3057\u3066\u8a8d\u8b58\u3055\u308c\u308b\u305f\u3081\u3067\u3059\u3002<br \/>\n\u30af\u30e9\u30b9\u30bf (Cluster) \u3068\u3044\u3048\u3070\u3001\u300c\u7fa4\u308c\u3001\u96c6\u56e3\u3001\u4e00\u56e3\u300d\u3068\u3044\u3046\u610f\u5473\u4f3c\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u3088\u3046\u306a\u96c6\u56e3\u3092\u30c7\u30fc\u30bf\u304b\u3089\u898b\u51fa\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u30af\u30e9\u30b9\u5206\u985e\u3068\u306f\u9055\u3044\u3001\u5206\u3051\u65b9\u3092\u4e8b\u524d\u306b\u6559\u5e2b\u30c7\u30fc\u30bf\u3092\u4e0e\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30c7\u30fc\u30bf\u304b\u3089\u305d\u306e\u96c6\u56e3\u3092\u898b\u51fa\u3059\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u4e8b\u524d\u306b\u6559\u5e2b\u30c7\u30fc\u30bf\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u306f\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n<img loading=\"lazy\" class=\"alignnone size-medium wp-image-11040\" src=\"https:\/\/storage.googleapis.com\/sitest-wp\/blog\/wp-content\/uploads\/2017\/06\/cluster-300x296.jpg\" alt=\"\" width=\"300\" height=\"296\" \/><\/p>\n<div class=\"frame_headding\">\n<h3 style=\"text-align: left;\">\u25a0 \u3069\u306e\u3088\u3046\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u3042\u308b\u306e \uff1f<\/h3>\n<\/div>\n<p>\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3068\u3044\u3063\u3066\u3082\u3001\u305d\u306e\u624b\u6cd5\u306b\u306f\u69d8\u3005\u306a\u624b\u6cd5\u304c\u8003\u6848\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u4ee5\u4e0b\u306b\u3001\u4ee3\u8868\u7684\u306a\u624b\u6cd5\u306e\u7279\u5fb4\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3 style=\"text-align: left\">\u51dd\u96c6\u578b<\/h3>\n<p>\u27a4\u30dc\u30c8\u30e0\u30a2\u30c3\u30d7\u306b\u8fd1\u3044\u3082\u306e\u304b\u3089\u304f\u3063\u3064\u3051\u3066\u3044\u304f(\u6a39\u5f62\u56f3\u304c\u3067\u304d\u308b)<br \/>\n\u27a4\u5b9f\u88c5\u304c\u7c21\u5358\u30fb\u30af\u30e9\u30b9\u6570\u3092\u6700\u521d\u306b\u5b9a\u7fa9\u3057\u306a\u304f\u3066\u3088\u3044<br \/>\n\u27a4\u30af\u30e9\u30b9\u30bf\u9593\u306e\u8ddd\u96e2\u304c\u308f\u304b\u308a\u3084\u3059\u3044<br \/>\n\u27a4\u8ddd\u96e2\u8a08\u7b97\u3092\u3069\u3046\u5b9a\u7fa9\u3059\u308b\u304b\u304c\u96e3\u3057\u3044<br \/>\n\u3000(\u5358\u9023\u7d50(\u8fd1\u3044\u3068\u3053\u308d), \u5b8c\u5168\u9023\u7d50(\u9060\u3044\u3068\u3053\u308d), \u91cd\u5fc3)<br \/>\n\u3000\u30fb\u5358\u9023\u7d50\u3000\u2192\u3000\u9577\u3044\u5217\u307f\u305f\u3044\u306a\u30af\u30e9\u30b9\u30bf\u304c\u3067\u304d\u308b<br \/>\n\u3000\u30fb\u5b8c\u5168\u9023\u7d50\u3000\u2192\u3000\u9396\u306b\u306f\u306a\u3089\u306a\u3044<\/p>\n<h3 style=\"text-align: left\">k-means\u6cd5<\/h3>\n<p>\u27a4\u6700\u521d\u306bK\u500b\u306e\u30af\u30e9\u30b9\u30bf\u306b\u5206\u3051\u308b\u3068\u6c7a\u3081\u308b<br \/>\n\u27a4K\u500b\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3092\u7121\u4f5c\u70ba\u306b\u6c7a\u3081\u308b<br \/>\n\u27a4\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u8ddd\u96e2\u304c\u4e00\u756a\u8fd1\u3044\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306e\u3068\u3053\u308d\u306b\u6240\u5c5e\u3055\u305b\u308b<br \/>\n\u27a4\u5404\u30af\u30e9\u30b9\u306b\u542b\u307e\u308c\u308b\u70b9\u306e\u5e73\u5747\u3092\u53d6\u308a\u3001\u305d\u308c\u3092\u65b0\u3057\u3044\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306b\u3059\u308b\u3000\u2192\u3000\u7e70\u308a\u8fd4\u3057<\/p>\n<p>\u30fb\u5229\u70b9: \u30af\u30e9\u30b9\u6570\u304c\u6c7a\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u7dba\u9e97\u306b\u53d6\u308c\u308b<br \/>\n\u30fb\u554f\u984c: \u521d\u671f\u5024\u4f9d\u5b58\u304c\u5927\u304d\u3044, \u30af\u30e9\u30b9\u6570\u3092\u6c7a\u3081\u306a\u3044\u3068\u3044\u3051\u306a\u3044, \u521d\u671f\u5024\u306b\u51dd\u96c6\u578b\u3067\u6c7a\u3081\u305f\u3082\u306e\u3092\u4f7f\u3046\u3068\u304b<\/p>\n<h3 style=\"text-align: left\">\u6df7\u5408\u6b63\u898f\u5206\u5e03\u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0<\/h3>\n<p>\u27a4k-means\u6cd5\u3092\u30bd\u30d5\u30c8\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u306b\u3057\u305f\u3082\u306e<br \/>\n\u27a4\u5168\u3066\u306e\u30af\u30e9\u30b9\u30bf\u306f\u6b63\u898f\u5206\u5e03\u306b\u57fa\u3065\u3044\u305f\u5024\u3092\u751f\u6210\u3059\u308b\u3068\u4eee\u5b9a\u3057\u3066\u3001\u5404\u4e8b\u4f8b\u306e P(x|C) \u3092\u6c7a\u3081\u308b<br \/>\n\u27a4P(C|x) \u3092\u3001\u5404 x \u306e\u751f\u8d77\u78ba\u7387\u3068\u3001\u30af\u30e9\u30b9\u30bf\u306e\u4e8b\u524d\u5206\u5e03\u306b\u57fa\u3065\u3044\u3066\u8a08\u7b97\u3059\u308b<br \/>\n\u3000(\u30af\u30e9\u30b9\u30bf\u306e\u4e8b\u524d\u5206\u5e03\u306f\u9069\u5f53\u306b\u4e0e\u3048\u308b\u304b\u3001\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3067\u4e0e\u3048\u308b\u304b)<br \/>\n\u27a4\u5168\u90e8\u306e P(C|x) \u3092\u8a08\u7b97\u3057\u7d42\u3048\u305f\u3089\u3001\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3092\u518d\u8a08\u7b97\u3059\u308b<br \/>\n\u27a4\u518d\u8a08\u7b97\u3067\u304d\u305f\u3089\u3001\u307e\u305f P(C|x) \u3092\u8003\u3048\u308b<\/p>\n<h3 style=\"text-align: left\">EM\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/h3>\n<p>\u27a4\u5bfe\u6570\u5c24\u5ea6\u6700\u5927\u5316\u306b\u3088\u3063\u3066\u5e73\u5747\u30d9\u30af\u30c8\u30eb\u306e\u518d\u8a08\u7b97\u3092\u884c\u3044\u305f\u3044<br \/>\n\u3000\u2192 \u304c\u3001\u5404\u4e8b\u4f8b\u306eC\u306f\u672a\u77e5\u3067\u3001P(c|x;\u03b8&#8217;) \u304c\u4e0e\u3048\u3089\u308c\u308b<br \/>\n\u27a4\u5bfe\u6570\u5c24\u5ea6 \u03a3logP(c,x;\u03b8) \u306e\u4ee3\u308f\u308a\u306b\u3001\u03a3\u03a3P(c|x;\u03b8&#8217;)logP(c,x;\u03b8) \u3092<br \/>\n\u3000\u6700\u5927\u5316\u3059\u308b \u03b8 \u3092\u63a2\u3059\u306e\u304c EM\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u306a\u308b<br \/>\n\u27a4EM\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u5fc5\u305a\u3057\u3082\u4e8b\u524d\u5206\u5e03\u3092\u4eee\u5b9a\u3057\u306a\u304f\u3068\u3082\u3088\u3044<br \/>\n\u27a4Q\u95a2\u6570\u306f\u5358\u8abf\u5897\u52a0\u306b\u306a\u308b<br \/>\n\u27a4\u3055\u3063\u304d\u306e\u6df7\u5408\u6b63\u898f\u5206\u5e03\u3067\u9069\u5f53\u306b\u4e0e\u3048\u3066\u3044\u305f P(C) \u306f\u3001<br \/>\n\u3000\u5404\u4e8b\u4f8b\u304c\u3042\u308b\u30af\u30e9\u30b9\u30bf\u306b\u5c5e\u3059\u308b\u78ba\u7387\u306e\u548c\u3092\u6b63\u898f\u5316\u3057\u3066\u4e0e\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/p>\n<div class=\"frame_headding\">\n<h3 style=\"text-align: left;\">\u25a0 \u6700\u5f8c\u306b<\/h3>\n<\/div>\n<p>\u4eca\u56de\u306f\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3067\u3042\u308b\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<br \/>\n\u3053\u306e\u3088\u3046\u306b\u3001\u4e8b\u524d\u306b\u6559\u5e2b\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u306a\u304f\u30c7\u30fc\u30bf\u306e\u7279\u5fb4\u306b\u3088\u3063\u3066\u3001\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u3067\u304d\u308b\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u306f\u30ec\u30b3\u30e1\u30f3\u30c7\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u306e\u624b\u6cd5\u306b\u3082\u53d6\u308a\u5165\u308c\u3089\u308c\u305f\u308a\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u3055\u307e\u3056\u307e\u306a\u5c5e\u6027\uff08\u6027\u5225\u3001\u5e74\u9f62\u306a\u3069\uff09\u3084\u55dc\u597d\u6027\u3001\u6d88\u8cbb\u50be\u5411\u3092\u57fa\u6e96\u306b\u3057\u305f\u3044\u304f\u3064\u304b\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u985e\u3057\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30e1\u30fc\u30eb\u306e\u914d\u5e03\u306a\u3069\u306b\u3082\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u30c7\u30fc\u30bf\u91cf\u304c\u591a\u304f\u306a\u308c\u3070\u3001\u3053\u306e\u3088\u3046\u306a\u51e6\u7406\u306f\u81a8\u5927\u306a\u30ea\u30bd\u30fc\u30b9\u304c\u639b\u304b\u3063\u3066\u3057\u307e\u3057\u307e\u3059\u3002<br \/>\n\u6b21\u56de\u306f\u3001\u30d3\u30c3\u30af\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u3082\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3092\u5bb9\u6613\u306b\u884c\u3048\u308b\u3001\u5206\u6563\u51e6\u7406\u6280\u8853\u3067\u3042\u308b Hadoop \u3068\u3001Hadoop \u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u30c7\u30fc\u30bf\u30de\u30a4\u30cb\u30f3\u30b0\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308b Mahout \u3092\u5229\u7528\u3057\u305f\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd1\u5e74\u3001AI (Artificial Intelligence) \u304c\u69d8\u3005\u306a\u5206\u91ce\u3067\u3001\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u91cd\u8981\u306a\u6280\u8853\u3068\u3057\u3066\u3001\u6a5f\u68b0\u5b66\u7fd2 (Machine Learning) \u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002 \u4e00\u822c\u7684\u306b\u6a5f\u68b0\u5b66\u7fd2 (Machine Learning) \u306b\u306f\u3001\u5927\u304d\u304f\u5206\u3051\u3066\u300c\u6559\u5e2b\u3042\u308a\u5b66\u7fd2\u300d\u3068\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3068\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u3053\u3067\u3001\u4eca\u56de\u306f\u300c\u6559\u5e2b\u306a\u3057\u5b66\u7fd2\u300d\u3067\u3042\u308b\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3092\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059 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