{"id":6910,"date":"2016-05-03T22:09:15","date_gmt":"2016-05-03T13:09:15","guid":{"rendered":"http:\/\/www.webcyou.com\/?p=6910"},"modified":"2016-05-03T22:09:15","modified_gmt":"2016-05-03T13:09:15","slug":"javascript%e3%81%a7%e3%83%a6%e3%83%bc%e3%82%af%e3%83%aa%e3%83%83%e3%83%89%e8%b7%9d%e9%9b%a2%e3%81%a8%e3%83%94%e3%82%a2%e3%82%bd%e3%83%b3%e7%9b%b8%e9%96%a2%e4%bf%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.webcyou.com\/?p=6910","title":{"rendered":"JavaScript\u3067\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3068\u30d4\u30a2\u30bd\u30f3\u76f8\u95a2\u4fc2\u6570"},"content":{"rendered":"

\u4eca\u56de\u306f\u3001\u53e3\u30b3\u30df\u30b5\u30a4\u30c8\u306a\u3069\u306b\u3088\u304f\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u30ec\u30d3\u30e5\u30fc\u306e\u8a55\u4fa1\u304b\u3089\u3001\u4f3c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u63a2\u3059\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066\u5c11\u3005\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u30b2\u30fc\u30e0\u306e\u30ec\u30d3\u30e5\u30fc\u30c7\u30fc\u30bf\u304c\u3053\u306e\u69d8\u306a\u611f\u3058\u3067\u5b58\u5728\u3057\u305f\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
\u30bf\u30a4\u30c8\u30eb \\ \u30e6\u30fc\u30b6\u30fc<\/strong><\/td>\ntakayama<\/th>\nnakamura<\/th>\ntanaka<\/th>\nkoike<\/th>\n<\/tr>\n<\/thead>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/th>\n10<\/td>\n7<\/td>\n8<\/td>\n3<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/th>\n9<\/td>\n5<\/td>\n10<\/td>\n8<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/th>\n4<\/td>\n8<\/td>\n5<\/td>\n10<\/td>\n<\/tr>\n
F-ZERO<\/th>\n7<\/td>\n7<\/td>\n8<\/td>\n6<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/th>\n5<\/td>\n6<\/td>\n8<\/td>\n10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u3092\u5143\u306b\u3001\u4f3c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u63a2\u3057\u51fa\u3057\u307e\u3059\u3002<\/p>\n

\u305d\u308c\u305e\u308c\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u3068\u6bd4\u8f03\u3057\u3001\u3069\u306e\u7a0b\u5ea6\u4f3c\u3066\u3044\u308b\u304b\u985e\u4f3c\u6027\u30b9\u30b3\u30a2<\/strong>\u3068\u8a00\u308f\u308c\u308b\u3082\u306e\u3092\u7b97\u51fa\u3057\u3066\u6bd4\u8f03\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

\u985e\u4f3c\u6027\u30b9\u30b3\u30a2\u306e\u7b97\u51fa\u65b9\u6cd5<\/strong>\u306f\u5e7e\u3064\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u3082\u3063\u3068\u3082\u521d\u6b69\u7684\u306a\u300c\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2<\/strong>\u300d\u3068\u300c\u30d4\u30a2\u30bd\u30f3\u76f8\u95a2\u4fc2\u6570<\/strong>\u300d\u306b\u3088\u3063\u3066\u7b97\u51fa\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2<\/h4>\n

\u985e\u4f3c\u6027\u30b9\u30b3\u30a2\u306e\u7b97\u51fa\u65b9\u6cd5\u3067\u5358\u7d14\u306a\u65b9\u6cd5\u306e\u4e00\u3064\u3067\u3001\u300c\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2<\/strong>\u300d\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u7aef\u7684\u306b\u8aac\u660e\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u8a55\u4fa1\u3057\u305f\u30a2\u30a4\u30c6\u30e0\u3092\u8ef8\u306b\u3057\u30b0\u30e9\u30d5\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n

\u30b0\u30e9\u30d5\u4e0a\u306b\u30e6\u30fc\u30b6\u30fc\u3092\u914d\u7f6e\u3057\u3001\u5404\u30e6\u30fc\u30b6\u30fc\u306e\u8ddd\u96e2\u3092\u7b97\u51fa\u3059\u308b\u4e8b\u306b\u3088\u3063\u3066\u3069\u306e\u304f\u3089\u3044\u30e6\u30fc\u30b6\u30fc\u540c\u58eb\u306f\u8fd1\u3044\u304b\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u3001\u4f8b\u306b\u4e0a\u8a18\u306e\u8868\u304b\u3089\u300c\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8\u300d\u3068\u300c\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa\u300d\u3092\u6bd4\u8f03<\/strong>\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u55dc\u597d\u7a7a\u9593\u306b\u56f3\u793a\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

\"g\"<\/p>\n

\u30d1\u30c3\u3068\u898b\u305f\u611f\u3058\u300ctakayama\u300d\u3068\u300ctanaka\u300d\u306f\u8fd1\u304f<\/strong>\u3001\u300ctakayama\u300d\u3068\u300ckoike\u300d\u306f\u9060\u3044<\/strong>\u306e\u304c\u5206\u304b\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u3067\u306f\u3001\u3053\u308c\u3092\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3068\u8a00\u308f\u308c\u308b\u8a08\u7b97\u5f0f\u306b\u3088\u3063\u3066\u7b97\u51fa\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u306e\u5b9a\u7fa9<\/h5>\n

\"$$<\/p>\n

 <\/p>\n

\u6bd4\u8f03\u7684\u30b7\u30f3\u30d7\u30eb\u306a\u8a08\u7b97\u5f0f\u306b\u3088\u3063\u3066\u7b54\u3048\u3092\u5c0e\u304f\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n

\u4e0a\u8a18\u306e\u5b9a\u7fa9\u5f0f\u3088\u308a\u66f4\u306b1\u3092\u52a0\u3048\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u30010\u304b\u30891\u3092\u8fd4\u3059\u5f0f\u306b\u3057\u307e\u3059\u3002<\/p>\n

\u3053\u3046\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u3088\u308a\u985e\u4f3c\u6027\u306e\u9ad8\u3044\u30e6\u30fc\u30b6\u30fc\u306f1\u306b\u8fd1\u304f\u306a\u308a\u3001\u985e\u4f3c\u6027\u306e\u4f4e\u3044\u30e6\u30fc\u30b6\u30fc\u306f0\u306b\u8fd1\u304f\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n

 <\/p>\n

\u300ctakayama\u300d\u3068\u300ctanaka\u300d\u306e\u300c\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8\u300d\u3068\u300c\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa\u300d\u306b\u304a\u3051\u308b\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3002<\/strong><\/p>\n

var distance = 1\/(1 + Math.sqrt(Math.pow(10-8,2) + Math.pow(9-10,2)));<\/pre>\n
result<\/strong><\/p>\n
0.3090169943749474<\/pre>\n
 <\/p>\n
\u300ctakayama\u300d\u3068\u300ckoike\u300d\u306e\u300c\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8\u300d\u3068\u300c\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa\u300d\u306b\u304a\u3051\u308b\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3002<\/strong><\/p>\n
var distance = 1\/(1 + Math.sqrt(Math.pow(10-3,2) + Math.pow(9-8,2)));<\/pre>\n
result<\/strong><\/p>\n
0.12389934309929541<\/pre>\n
 <\/p>\n
\u3082\u3061\u308d\u3093\u3067\u3059\u304c\u3001\u5168\u304f\u540c\u3058\u306b\u3059\u308b\u3068\u30011\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<\/p>\n
var distance = 1\/(1 + Math.sqrt(Math.pow(10-10,2) + Math.pow(4-4,2)));<\/pre>\n
result<\/strong><\/p>\n
1<\/pre>\n
\u3053\u306e\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3092\u307e\u3068\u3081\u3066\u8a08\u7b97\u3059\u308bJavaScript\u306e\u95a2\u6570\u306f\u4ee5\u4e0b\u306e\u69d8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
function sim_distance(prefs, person1, person2) {\r\n  var sumOfSquares = 0, matchItem = [];\r\n\r\n  for(item in prefs[person1]) {\r\n    if(item in prefs[person2]) {\r\n      matchItem.push(item);\r\n    }\r\n  }\r\n\r\n  \/\/ \u30de\u30c3\u30c1\u3059\u308b\u30a2\u30a4\u30c6\u30e0\u304c\u306a\u3044\u5834\u5408\u306f\u51e6\u7406\u3057\u306a\u3044\u3002\r\n  if(matchItem.length == 0) return;\r\n\r\n  matchItem.forEach(function(val) {\r\n    sumOfSquares += Math.sqrt(Math.pow(prefs[person1][val] - prefs[person2][val],2));\r\n  });\r\n\r\n  return 1 \/ (1 + sumOfSquares);\r\n}<\/pre>\n
\u30a2\u30a4\u30c6\u30e0\u3068\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3092\u7b97\u51fa\u3057\u305f\u3044\u30e6\u30fc\u30b6\u30fc\u3092\u5f15\u6570\u306b\u3059\u308b\u4e8b\u306b\u3088\u3063\u3066\u3001\u5024\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
sim_distance(reviews, \"takayama\", \"tanaka\");<\/pre>\n
\u3053\u306e\u307e\u307e\u3067\u3082\u826f\u3044\u306e\u3067\u3059\u304c\u3001\u3088\u308a\u6b63\u78ba\u306b\u985e\u4f3c\u6027\u3092\u9ad8\u3081\u308b\u70ba\u306b\u6d17\u7df4\u3055\u308c\u305f\u65b9\u6cd5\u3068\u3057\u3066\u30d4\u30a2\u30bd\u30f3\u306e\u76f8\u95a2\u4fc2\u6570\u3092\u6c42\u3081\u308b\u65b9\u6cd5<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u76f8\u95a2\u4fc2\u6570\u3068\u306f2\u3064\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304c\u3042\u308b\u76f4\u7dda\u306b\u6cbf\u3063\u3066\u3069\u306e\u7a0b\u5ea6\u6cbf\u3063\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u6570\u5024<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u4e0a\u8a18\u3067\u306f\u3001\u70b9\u6570\u304c\u8fd1\u3044\u30e6\u30fc\u30b6\u30fc\u3092\u985e\u4f3c\u6027\u306e\u9ad8\u3044\u30e6\u30fc\u30b6\u30fc\u3068\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u679c\u3066\u3057\u3066\u305d\u308c\u3067\u826f\u304b\u3063\u305f\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
\u4f8b\u3048\u3070\u3001\u4e00\u65b9\u306f\u70b9\u6570\u3092\u7518\u304f\u4ed8\u3051\u308b\u50be\u5411\u304c\u3042\u308a\u3001\u4e00\u65b9\u306f\u5168\u4f53\u7684\u306b\u53b3\u3057\u304f\u70b9\u6570\u3092\u53b3\u3057\u304f\u4ed8\u3051\u308b\u50be\u5411\u304c\u3042\u308b\u3068\u304d\u3001<\/p>\n
\u30e6\u30fc\u30b6\u30fc\u9593\u3067\u70b9\u6570\u5dee\u306f\u958b\u3044\u3066\u3044\u308b\u304c\u3001\u5404\u8a55\u4fa1\u306e\u4ed8\u3051\u65b9\u306e\u50be\u5411\u304c\u4f3c\u3066\u3044\u305f\u5834\u5408\u3001\u305d\u308c\u3092\u985e\u4f3c\u6027\u3092\u9ad8\u3044\u3068\u3059\u308b\u304b\u4f4e\u3044\u3068\u3059\u308b\u304b\u3002<\/strong><\/p>\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u305d\u306e\u5224\u5b9a\u306f\u7570\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u69d8\u306a\u70b9\u6570\u306e\u4ed8\u3051\u65b9\u3067\u3082\u3001\u55dc\u597d\u306e\u8fd1\u3044\u30e6\u30fc\u30b6\u30fc\u3068\u3057\u3066\u7b97\u51fa\u3059\u308b\u306e\u306b\u30d4\u30a2\u30bd\u30f3\u306e\u76f8\u95a2\u4fc2\u6570\u304c\u4f7f\u308f\u308c\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u56de\u5e30\u76f4\u7dda\u3068\u76f8\u95a2\u4fc2\u6570<\/h4>\n
\u5148\u307b\u3069\u306e\u8868\u306e\u30e6\u30fc\u30b6\u30fc\u300ctakayama\u300d\u3068\u300ctanaka\u300d<\/strong>\u3068\u3092\u6bd4\u8f03\u3057\u3001\u30a2\u30a4\u30c6\u30e0\u3092\u914d\u7f6e\u3057\u305f\u6563\u5e03\u56f3\u3092\u4f5c\u6210\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
\u6563\u5e03\u56f3<\/strong><\/p>\n
\"b<\/p>\n
\u3059\u3079\u3066\u306e\u30a2\u30a4\u30c6\u30e0\u306b\u3067\u304d\u308b\u3060\u3051\u8fd1\u304f\u3001\u53f3\u4e0a\u306b\u5f15\u304b\u308c\u3066\u3044\u308b\u7dda\u304c\u56de\u5e30\u76f4\u7dda<\/strong>\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3001<\/p>\n
\u4e8c\u4eba\u304c\u5168\u304f\u540c\u3058\u8a55\u70b9\u3068\u3059\u308b\u5834\u5408\u3001\u76f4\u7dda\u4e0a\u306b\u3059\u3079\u3066\u306e\u30a2\u30a4\u30c6\u30e0\u304c\u4e57\u308b\u5f62<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u8a55\u4fa1\u70b9\u304c\u5b8c\u5168\u306b\u76f8\u95a2<\/strong>\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u305d\u306e\u3068\u304d\u306e\u30b9\u30b3\u30a2\u306f1\u3068\u306a\u308a\u3001<\/p>\n
\u30e6\u30fc\u30b6\u30fc\u9593\u306e\u76f8\u95a2\u95a2\u4fc2\u306f\u5f37\u3044<\/strong>\u4e8b\u304c\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n
\u76f8\u95a2\u4fc2\u6570\u306e\u7d76\u5bfe\u5024<\/th>\n\u89e3\u91c8<\/th>\n<\/tr>\n
0.0\u301c0.2<\/td>\n\u307b\u3068\u3093\u3069\u76f8\u95a2\u95a2\u4fc2\u304c\u306a\u3044<\/td>\n<\/tr>\n
0.2\u301c0.4<\/td>\n\u3084\u3084\u76f8\u95a2\u95a2\u4fc2\u304c\u3042\u308b<\/td>\n<\/tr>\n
0.4\u301c0.7<\/td>\n\u304b\u306a\u308a\u76f8\u95a2\u95a2\u4fc2\u304c\u3042\u308b<\/td>\n<\/tr>\n
0.7\u301c1.0<\/td>\n\u00a0\u5f37\u3044\u76f8\u95a2\u95a2\u4fc2\u304c\u3042\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u305d\u308c\u3067\u306f\u3001\u76f8\u95a2\u4fc2\u6570\u306b\u3064\u3044\u3066\u3061\u3087\u3063\u3068wikipedia\u3092\u53c2\u7167\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u76f8\u95a2\u4fc2\u6570\uff08\u305d\u3046\u304b\u3093\u3051\u3044\u3059\u3046\u3001\u82f1: correlation coefficient\uff09\u306f\u30012\u3064\u306e\u78ba\u7387\u5909\u6570\u306e\u9593\u306b\u3042\u308b\u7dda\u5f62\u306a\u95a2\u4fc2\u306e\u5f37\u5f31\u3092\u6e2c\u308b\u6307\u6a19\u3067\u3042\u308b\u3002\u76f8\u95a2\u4fc2\u6570\u306f\u7121\u6b21\u5143\u91cf\u3067\u3001\u22121\u4ee5\u4e0a1\u4ee5\u4e0b\u306e\u5b9f\u6570\u306b\u5024\u3092\u3068\u308b\u3002\u76f8\u95a2\u4fc2\u6570\u304c\u6b63\u306e\u3068\u304d\u78ba\u7387\u5909\u6570\u306b\u306f\u6b63\u306e\u76f8\u95a2\u304c\u3001\u8ca0\u306e\u3068\u304d\u78ba\u7387\u5909\u6570\u306b\u306f\u8ca0\u306e\u76f8\u95a2\u304c\u3042\u308b\u3068\u3044\u3046\u3002\u307e\u305f\u76f8\u95a2\u4fc2\u6570\u304c0\u306e\u3068\u304d\u78ba\u7387\u5909\u6570\u306f\u7121\u76f8\u95a2\u3067\u3042\u308b\u3068\u3044\u3046\u3002<\/p>\n
\u305f\u3068\u3048\u3070\u3001\u5148\u9032\u8af8\u56fd\u306e\u5931\u696d\u7387\u3068\u5b9f\u8cea\u7d4c\u6e08\u6210\u9577\u7387\u306f\u5f37\u3044\u8ca0\u306e\u76f8\u95a2\u95a2\u4fc2\u306b\u3042\u308a\u3001\u76f8\u95a2\u4fc2\u6570\u3092\u6c42\u3081\u308c\u3070\u6bd4\u8f03\u7684\u22121\u306b\u8fd1\u3044\u6570\u5b57\u306b\u306a\u308b\u3002<\/p>\n
\u5f15\u7528\u5143\uff1awikipedia<\/p>\n
 wikipedia \u76f8\u95a2\u4fc2\u6570<\/a><\/p>\n<\/blockquote>\n
\"400px-Correlation_examples2.svg\"<\/p>\n
\u3075\u3080\u3075\u3080\u3002<\/p>\n
\u6b63\u306e\u76f8\u95a2\u3068\u8ca0\u306e\u76f8\u95a2\u304c\u3042\u308b\u306e\u304c\u308f\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n
\u8ca0\u306e\u76f8\u95a2\u306e\u5834\u5408\u306f\u3001\u985e\u4f3c\u6027\u306e\u4f4e\u3044\uff08\u7570\u306a\u308b\uff09\u30e6\u30fc\u30b6\u30fc\u3068\u3044\u3046\u306e\u304c\u308f\u304b\u308a\u307e\u3059\u306d\u3002<\/p>\n
\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570<\/h4>\n
\u76f8\u95a2\u4fc2\u6570\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u898b\u308b\u3068\u3001<\/p>\n
 <\/p>\n
\u6b63\u306e\u5206\u6563\u3092\u6301\u3064\u78ba\u7387\u5909\u6570X<\/span>\u3001Y<\/span>\u304c\u4e0e\u3048\u3089\u308c\u305f\u3068\u304d\u3001\u5171\u5206\u6563\u3092\u03c3XY<\/i><\/sub><\/span>\u3001\u6a19\u6e96\u504f\u5dee\u3092\u03c3X<\/i><\/sub><\/span>\u3001\u03c3Y<\/i><\/sub><\/span>\u3068\u304a\u304f\u3002\u3053\u306e\u3068\u304d<\/p>\n
\"$$<\/p>\n
\u3092\u78ba\u7387\u5909\u6570X<\/span>\u3001Y<\/span>\u306e\u76f8\u95a2\u4fc2\u6570<\/b>\u3068\u3044\u3046\u3002\u3053\u308c\u306f\u671f\u5f85\u5024\u3092E<\/i>[\u2013]<\/span>\u3067\u8868\u305b\u3070<\/p>\n
\"$$<\/p>\n
\u3068\u66f8\u304d\u76f4\u3059\u3053\u3068\u3082\u3067\u304d\u308b\u3002<\/p>\n
\u5f15\u7528\u5143\uff1awikipedia<\/p>\n
 wikipedia \u76f8\u95a2\u4fc2\u6570<\/a><\/p>\n<\/blockquote>\n
\u3046\u3093\u3002
\n\u66f8\u304d\u76f4\u3059\u3053\u3068\u306b\u3088\u3063\u3066\u66f4\u306b\u308f\u304b\u3093\u306a\u304f\u306a\u3063\u305f\u6c17\u304c\u3057\u307e\u3059\u306d\u3002w<\/p>\n
\u66f4\u306b\u3001\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570\uff08Pearson product-moment correlation coefficient\uff09\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u898b\u308b\u3068\u3001<\/p>\n
2\u7d44\u306e\u6570\u5024\u304b\u3089\u306a\u308b\u30c7\u30fc\u30bf\u5217\"\{(x_{i}, \, y_{i})\} (i=1,2,\ldots,n)\"\u304c\u4e0e\u3048\u3089\u308c\u305f\u3068\u304d\u3001\u6a19\u672c\u5171\u5206\u6563\u3092sxy\u3001\u6a19\u672c\u6a19\u6e96\u504f\u5dee\u3092sx\u3001sy\u3068\u304a\u304f\u3002\u3053\u306e\u3068\u304d
\n\"r = \frac{s_{x y}}{s_x s_y}\"
\n\u3092\u6a19\u672c\u76f8\u95a2\u4fc2\u6570\uff08sample correlation coefficient\uff09\u3042\u308b\u3044\u306f\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570\u3068\u3044\u3046\u3002\u3053\u308c\u306f\u30c7\u30fc\u30bf\"x = \{x_{i}\}, y = \{y_{i}\}\"\u306e\u76f8\u52a0\u5e73\u5747\u3092\"\bar{x}、\bar{y} \"\u3067\u8868\u305b\u3070<\/p>\n
\"$$<\/p>\n
\u3068\u66f8\u304d\u76f4\u3059\u3053\u3068\u3082\u3067\u304d\u308b\u3002
\n\u3053\u308c\u306f\u3001\u5e7e\u4f55\u5b66\u7684\u306b\u306f\u5404\u30c7\u30fc\u30bf\u306e\u5e73\u5747\u304b\u3089\u306e\u305a\u308c\u3092\u8868\u3059\u30d9\u30af\u30c8\u30eb
\n\"$$
\n\u306e\u306a\u3059\u89d2\u306e\u4f59\u5f26\u3067\u3042\u308b\u3002<\/p>\n
\u5f15\u7528\u5143\uff1awikipedia<\/p>\n
 wikipedia \u76f8\u95a2\u4fc2\u6570<\/a><\/p>\n<\/blockquote>\n
\u3068\u3001wikipedia\u306b\u306f\u8a18\u3055\u308c\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u3044\u3084\u3041\u3001\u3082\u3046\u4f55\u304c\u4f55\u3060\u304b\u3067\u3059\u306d\u3002<\/p>\n
\u3044\u304d\u306a\u308a\u96e3\u3057\u304f\u306a\u3063\u305f\u611f\u3058\u304c\u3042\u308a\u307e\u3059\u3088\u306d\u3002<\/p>\n
\u3067\u3082\u3001\u5927\u4e08\u592b\u3067\u3059\u3002\u4e00\u3064\u4e00\u3064\u565b\u307f\u7815\u3044\u3066\u3044\u304f\u3068\u7b54\u3048\u306f\u898b\u3048\u3066\u304d\u307e\u3059\u3002<\/p>\n
\u307e\u305a\u3001\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5f0f\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570<\/h5>\n
\"$$<\/p>\n
\u3068\u3001\u82e5\u5e72\u308f\u304b\u308a\u3084\u3059\u304f\u3057\u305f\u5f0f\u3002<\/p>\n
\u65e5\u672c\u8a9e\u3067\u8868\u3059\u3068\u3001<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/p>\n
\u65e5\u672c\u8a9e\u306b\u623b\u3059\u3068\u5927\u5206\u308f\u304b\u308a\u3084\u3059\u3044\u611f\u3058\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002<\/p>\n
\u66f4\u306b\u3001\u6570\u5f0f\u3092\u6f14\u7b97\u5b50\u306b\u8d77\u3053\u3057\u307e\u3059\u3068\u3001<\/p>\n
\u76f8\u95a2\u4fc2\u6570 \uff1d \u5171\u5206\u6563 \u00f7 \uff08 x\u306e\u6a19\u6e96\u504f\u5dee \u00d7 y\u306e\u6a19\u6e96\u504f\u5dee \uff09<\/strong><\/p>\n
\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u304b\u306a\u308a\u7406\u89e3\u3057\u3084\u3059\u3044\u3067\u3059\u306d\u3002<\/p>\n
\u305d\u3046\u3001\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570 r \u306f\uff0c\u300c\u5909\u6570 X \u3068\u5909\u6570 Y \u306e\u5171\u5206\u6563\u300d\u3068\u300c\u305d\u308c\u305e\u308c\u306e\u5909\u6570\u306e\u6a19\u6e96\u504f\u5dee\u300d<\/strong>\u304b\u3089\u6c42\u3081\u3089\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n
\u3067\u3059\u304c\u3001\u82e5\u5e72\u805e\u304d\u306a\u308c\u306a\u3044\u8a00\u8449\u300c\u5171\u5206\u6563<\/strong>\u300d\u3068\u300c\u6a19\u6e96\u504f\u5dee<\/strong>\u300d\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n
\u305d\u308c\u3067\u306f\u3001\u305d\u308c\u305e\u308c\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u6a19\u6e96\u504f\u5dee\u306e\u8a08\u7b97<\/h5>\n
\u518d\u3073\u3053\u3061\u3089\u306e\u8868\u3092<\/p>\n\n\n\n\n\n\n\n\n\n
\u30bf\u30a4\u30c8\u30eb \\ \u30e6\u30fc\u30b6\u30fc<\/strong><\/td>\ntakayama (x)<\/th>\ntanaka (y)<\/th>\n<\/tr>\n<\/thead>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/th>\n10<\/td>\n8<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/th>\n9<\/td>\n10<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/th>\n4<\/td>\n5<\/td>\n<\/tr>\n
F-ZERO<\/th>\n7<\/td>\n8<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/th>\n5<\/td>\n8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4eca\u56de\u306f\u3001takayama\u3092x<\/strong> \u3068\u3057\u3001tanaka\u3092y<\/strong> \u3068\u3057\u30662\u4eba\u306e\u76f8\u95a2\u4fc2\u6570\u3092\u5c0e\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
 <\/p>\n\n\n\n\n\n\n\n
\u6c42\u3081\u308b\u5024<\/th>\n\u8a08\u7b97\u5f0f<\/th>\n<\/tr>\n
\u5e73\u5747<\/strong><\/td>\n\u00a0x\u306e\u5408\u8a08\u5024 \u00f7 \u30b2\u30fc\u30e0\uff08\u30ec\u30d3\u30e5\u30fc\uff09\u6570<\/td>\n<\/tr>\n
\u504f\u5dee<\/strong><\/td>\n\u30b2\u30fc\u30e0\u6bce\u306e\u5024 – \u5e73\u5747<\/td>\n<\/tr>\n
\u5206\u6563<\/strong><\/td>\n\u504f\u5dee\u306e\u4e8c\u4e57\u306e\u5408\u8a08\u00f7 \u00a0\u30b2\u30fc\u30e0\uff08\u30ec\u30d3\u30e5\u30fc\uff09\u6570<\/td>\n<\/tr>\n
\u6a19\u6e96\u504f\u5dee<\/strong><\/td>\n\u00a0\u5206\u6563\u306e\u5e73\u65b9\u6839\uff08\u30eb\u30fc\u30c8\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5e73\u5747<\/h5>\n
takayama\u306e\u5404\u30ec\u30d3\u30e5\u30fc\u306e\u70b9\u6570\u306e\u5e73\u5747\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n
(10 + 9 + 4 + 7 + 5) \u00f7 5 = 7<\/pre>\n
\u5e73\u5747\u70b9\u6570\u306f\u300c7\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n
\u504f\u5dee<\/h5>\n
\u5148\u307b\u3069\u6c42\u3081\u305f\u5e73\u5747\u300c7\u300d\u3092\u5404\u70b9\u6570\u304b\u3089\u5dee\u3057\u5f15\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/strong><\/p>\n
\u305d\u306e\u5024\u304c\u3001\u5404\u30ec\u30d3\u30e5\u30fc\u70b9\u6570\u306e\u504f\u5dee\u3068\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n
\u5404\u30ec\u30d3\u30e5\u30fc\u70b9\u6570 - \u5e73\u5747\u70b9 = \u504f\u5dee<\/pre>\n\n\n\n\n\n\n\n\n
\u5404\u30b2\u30fc\u30e0<\/th>\n\u504f\u5dee\u5f0f<\/th>\n\u504f\u5dee<\/th>\n<\/tr>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/strong><\/td>\n10 – 7<\/td>\n3<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/strong><\/td>\n9 – 7<\/td>\n2<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/strong><\/td>\n4 – 7<\/td>\n-3<\/td>\n<\/tr>\n
F-ZERO<\/strong><\/td>\n7 – 7<\/td>\n0<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/strong><\/td>\n5 – 7<\/td>\n-2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/h5>\n
\u5206\u6563<\/h5>\n
\u5206\u6563\u306f\u3001\u30c7\u30fc\u30bf\u306e\u300c\u3070\u3089\u3064\u304d\u300d\u3092\u8868\u3059\u5024\u3068\u306a\u3063\u3066\u3044\u3066\u3001\u504f\u5dee\u3092\u4e8c\u4e57\u3057\u305f\u5e73\u5747\u3092\u8a08\u7b97<\/strong>\u3059\u308b\u4e8b\u306b\u3088\u3063\u3066\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n
\u504f\u5dee\u306e\u4e8c\u4e57\u306e\u5408\u8a08 \u00f7 \u30a2\u30a4\u30c6\u30e0\u6570 = \u5206\u6563<\/pre>\n\n\n\n\n\n\n\n\n
\u5404\u30b2\u30fc\u30e0<\/th>\n\u504f\u5dee\u306e\u4e8c\u4e57<\/th>\n<\/tr>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/strong><\/td>\n32<\/sup> = 9<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/strong><\/td>\n22<\/sup> = 4<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/strong><\/td>\n-32<\/sup> = 9<\/td>\n<\/tr>\n
F-ZERO<\/strong><\/td>\n02<\/sup> = 0<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/strong><\/td>\n-22<\/sup> = 4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
26 \u00f7 5 = 5.2<\/pre>\n
\u3068\u3044\u3046\u3053\u3068\u3067\u3001takayama\uff08x\uff09\u306e<\/strong>\u5206\u6563\u306f\u300c5.2<\/strong>\u300d\u3068\u3044\u3046\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n
\u6a19\u6e96\u504f\u5dee<\/h5>\n
\u300c\u6a19\u6e96\u504f\u5dee\u300d\u306e\u8a08\u7b97\u306f\u3001\u5206\u6563\u306e\u5e73\u65b9\u6839(\u30eb\u30fc\u30c8)\u3092\u8a08\u7b97<\/strong>\u3059\u308b\u3060\u3051\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n
\u6a19\u6e96\u504f\u5dee = \u221a\u5206\u6563<\/pre>\n
\u6a19\u6e96\u504f\u5dee: 2.280 = \u221a5.2<\/pre>\n
\u3068\u3044\u3046\u3053\u3068\u3067\u3001takayama\uff08x\uff09<\/strong>\u306e\u6a19\u6e96\u504f\u5dee<\/strong>\u306f2.280\u3068\u6c42\u3081\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n
\u540c\u3058\u304f\u3001tanaka\uff08y\uff09<\/strong>\u3092\u8a08\u7b97\u3059\u308b\u3068\u6a19\u6e96\u504f\u5dee<\/strong>\u306f1.600\u3068\u6c42\u3081\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n
\u3067\u306f\u305d\u308c\u305e\u308c\u3001\u8868\u306b\u307e\u3068\u3081\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u30bf\u30a4\u30c8\u30eb \\ \u30e6\u30fc\u30b6\u30fc<\/strong><\/td>\ntakayama (x)<\/th>\nx \u504f\u5dee<\/th>\nx\u504f\u5dee2\u4e57<\/th>\ntanaka (y)<\/th>\ny \u504f\u5dee<\/th>\ny\u504f\u5dee2\u4e57<\/th>\n<\/tr>\n<\/thead>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/th>\n10<\/td>\n3<\/td>\n9<\/td>\n8<\/td>\n0.2<\/td>\n\u00a00.04<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/th>\n9<\/td>\n2<\/td>\n4<\/td>\n10<\/td>\n2.2<\/td>\n4.84<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/th>\n4<\/td>\n-3<\/td>\n9<\/td>\n5<\/td>\n-2.8<\/td>\n7.84<\/td>\n<\/tr>\n
F-ZERO<\/th>\n7<\/td>\n0<\/td>\n0<\/td>\n8<\/td>\n0.2<\/td>\n0.04<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/th>\n5<\/td>\n-2<\/td>\n4<\/td>\n8<\/td>\n0.2<\/td>\n0.04<\/td>\n<\/tr>\n
\u5408\u8a08<\/th>\n35<\/td>\n0<\/td>\n26<\/td>\n39<\/td>\n0<\/td>\n12.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5206\u6563<\/strong>\uff1ax 5.2, y 2.56<\/p>\n
\u6a19\u6e96\u504f\u5dee<\/strong>\uff1ax\u00a02.280, y 1.6<\/p>\n
\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u3042\u3068\u3001\u3082\u3046\u5c11\u3057\u3067\u3059\u306d\u3002<\/p>\n
\u5171\u5206\u6563<\/h4>\n
\u305d\u308c\u3067\u306f\u3001\u3053\u3061\u3089\u306e\u5f0f\u306e<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/p>\n
\u307e\u305f\u306f\u3001<\/p>\n
\u76f8\u95a2\u4fc2\u6570 \uff1d \u5171\u5206\u6563 \u00f7 \uff08 x\u306e\u6a19\u6e96\u504f\u5dee \u00d7 y\u306e\u6a19\u6e96\u504f\u5dee \uff09<\/strong><\/p>\n
\u5171\u5206\u6563\u3092\u6c42\u3081\u308c\u3070\u3001\u76f8\u95a2\u4fc2\u6570\u304c\u51fa\u3066\u304d\u307e\u3059\u306d\u3002<\/p>\n
\u300c\u5171\u5206\u6563\u300d\u306f\u3001\u30b2\u30fc\u30e0\uff08\u30a2\u30a4\u30c6\u30e0\uff09\u3054\u3068\u306e x\u00a0\u3068 y\u306e\u504f\u5dee\uff08\u70b9\u6570 – \u5e73\u5747\uff09\u3092\u639b\u3051\u5408\u308f\u305b\u305f\u5e73\u5747<\/strong>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
\u30bf\u30a4\u30c8\u30eb \\ \u30e6\u30fc\u30b6\u30fc<\/strong><\/td>\ntakayama(x) \u504f\u5dee<\/th>\n<\/th>\ntanaka (y)\u306e\u504f\u5dee<\/th>\n<\/th>\n<\/tr>\n<\/thead>\n
\u30c9\u30e9\u30b4\u30f3\u30af\u30a8\u30b9\u30c8<\/th>\n(10 –\u00a07)<\/td>\n\u00d7<\/strong><\/td>\n(8 – 7.8)<\/td>\n0.6<\/td>\n<\/tr>\n
\u30b9\u30fc\u30d1\u30fc\u30de\u30ea\u30aa<\/th>\n(9 – 7)<\/td>\n\u00d7<\/strong><\/td>\n(10 – 7.8)<\/td>\n4.4<\/td>\n<\/tr>\n
\u30bc\u30eb\u30c0\u306e\u4f1d\u8aac<\/th>\n(4 – 7)<\/td>\n\u00d7<\/strong><\/td>\n(5 – 7.8)<\/td>\n8.4<\/td>\n<\/tr>\n
F-ZERO<\/th>\n(7 – 7)<\/td>\n\u00d7<\/strong><\/td>\n(8 – 7.8)<\/td>\n0<\/td>\n<\/tr>\n
\u30d5\u30a1\u30a4\u30ca\u30eb\u30d5\u30a1\u30f3\u30bf\u30b8\u30fc<\/th>\n(5 – 7)<\/td>\n\u00d7<\/strong><\/td>\n(8 – 7.8)<\/td>\n-0.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5e73\u5747 \u5171\u5206\u6563\uff1a2.6<\/strong><\/p>\n
 <\/p>\n
\u76f8\u95a2\u4fc2\u6570<\/h4>\n
\u305d\u308c\u305e\u308c\u5fc5\u8981\u306a\u60c5\u5831\u306f\u96c6\u307e\u3063\u305f\u306e\u3067\u3001\u76f8\u95a2\u4fc2\u6570\u306e\u8a08\u7b97\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/p>\n
\u76f8\u95a2\u4fc2\u6570 \uff1d \u5171\u5206\u6563 \u00f7 \uff08 x\u306e\u6a19\u6e96\u504f\u5dee \u00d7 y\u306e\u6a19\u6e96\u504f\u5dee \uff09<\/strong><\/p>\n
\u3067\u3057\u305f\u306e\u3067\u3001\u00a0r =\u00a0\u5171\u5206\u6563\uff1a2.6 \/<\/strong>\uff08takayama(x)\u00a0<\/strong>\u6a19\u6e96\u504f\u5dee\u00a0<\/strong>2.280 \u00d7\u00a0tanaka\uff08y\uff09<\/strong>\u6a19\u6e96\u504f\u5dee\u00a0<\/strong>1.600)<\/p>\n
 <\/p>\n
\u3068\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n
r = 2.6 \/ \uff082.280 \u00d7 1.600)<\/pre>\n
\u4fc2\u6570 0.712609<\/strong><\/p>\n
\u3068\u51fa\u307e\u3057\u305f\uff01<\/p>\n
\u3053\u3046\u3044\u3046\u306e\u3082\u30a8\u30af\u30bb\u30eb\u3067\u3084\u308b\u3068\u65e9\u3044\u3067\u3059\u306d\u3002<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/p>\n
\u3061\u306a\u307f\u306b\u56de\u5e30\u76f4\u7dda\u3092\u542b\u3093\u3060\u5206\u5e03\u56f3\u3082\u30b5\u30af\u30c3\u3068\u4f5c\u308c\u307e\u3059\u3002<\/p>\n
\u3067\u306f\u3001\u3053\u308c\u3089\u3092JavaScript\u3067\u6c42\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
function sim_pearson(prefs, person1, person2) {\r\n  var matchItem = [];\r\n\r\n  for(item in prefs[person1]) {\r\n    if(item in prefs[person2]) {\r\n      matchItem.push(item);\r\n    }\r\n  }\r\n\r\n  \/\/ \u30de\u30c3\u30c1\u3059\u308b\u30a2\u30a4\u30c6\u30e0\u304c\u306a\u3044\u5834\u5408\u306f\u51e6\u7406\u3057\u306a\u3044\u3002\r\n  if(matchItem.length == 0) return;\r\n\r\n  var sum1 = 0, sum2 = 0,\r\n      sum1Sq = 0, sum2Sq = 0,\r\n      pSum = 0, n = matchItem.length, r = 0;\r\n\r\n  matchItem.forEach(function(val) {\r\n    \/\/ \u8a55\u4fa1\u70b9\u306e\u5408\u8a08\r\n    sum1 += prefs[person1][val];\r\n    sum2 += prefs[person2][val];\r\n\r\n    \/\/ \u5e73\u65b9\u3092\u5408\u8a08\u3059\u308b\r\n    sum1Sq += Math.pow(prefs[person1][val], 2);\r\n    sum2Sq += Math.pow(prefs[person2][val], 2);\r\n\r\n    \/\/ \u7a4d\u3092\u5408\u8a08\u3059\u308b\r\n    pSum += prefs[person1][val] * prefs[person2][val];\r\n  });\r\n\r\n  var num = pSum - (sum1 * sum2 \/ n),\r\n      den = Math.sqrt((sum1Sq - Math.pow(sum1, 2) \/ n) * (sum2Sq - Math.pow(sum2, 2) \/ n));\r\n\r\n  if(den == 0) return;\r\n\r\n  r = num \/ den;\r\n  return r;\r\n}<\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u30a2\u30a4\u30c6\u30e0\u3068\u76f8\u95a2\u4fc2\u6570\u3092\u7b97\u51fa\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u3092\u5f15\u6570\u306b\u3059\u308b\u4e8b\u306b\u3088\u3063\u3066\u3001\u76f8\u95a2\u4fc2\u6570\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n
sim_pearson(reviews, \"takayama\", \"tanaka\");<\/pre>\n
\u3068\u3001\u5b9f\u884c\u3059\u308b\u3068\u3001\u4e0a\u8a18\u3067\u6c42\u3081\u305f\u4fc2\u6570\u3068\u540c\u69d8\u306e\u6570\u5024\u304c\u8fd4\u3063\u3066\u6765\u308b\u306e\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n
result<\/strong><\/p>\n
0.712609<\/pre>\n
\u4eca\u56de\u306f\u985e\u4f3c\u6027\u30b9\u30b3\u30a2\u306e\u7b97\u51fa\u65b9\u6cd5\u3068\u3057\u3066\u3001\u521d\u6b69\u7684\u306a\u300c\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u300d\u3068\u300c\u30d4\u30a2\u30bd\u30f3\u306e\u7a4d\u7387\u76f8\u95a2\u4fc2\u6570\u300d\u305d\u306e\u4ed6\u306b\u3082\u3042\u308b\u306e\u3067\u3001\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u8abf\u3079\u3066\u307f\u308b\u306e\u3082\u826f\u3044\u304b\u3082\u77e5\u308c\u307e\u305b\u3093\u306d\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u30e6\u30fc\u30b6\u30fc\u9593\u306e\u76f8\u95a2\u4fc2\u6570\u3092\u6c42\u3081\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30ec\u30b3\u30e1\u30f3\u30c9\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u306a\u3069\u3082\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002
\n\u3044\u3064\u304b\u305d\u306e\u8fba\u3082\u3002\u3002<\/p>\n
\u3067\u306f\u3067\u306f\u3041\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u56de\u306f\u3001\u53e3\u30b3\u30df\u30b5\u30a4\u30c8\u306a\u3069\u306b\u3088\u304f\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u30ec\u30d3\u30e5\u30fc\u306e\u8a55\u4fa1\u304b\u3089\u3001\u4f3c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u63a2\u3059\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3064\u3044\u3066\u5c11\u3005\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\u3001\u30b2\u30fc\u30e0\u306e\u30ec\u30d3\u30e5\u30fc\u30c7\u30fc\u30bf\u304c\u3053\u306e\u69d8\u306a\u611f\u3058\u3067\u5b58\u5728\u3057\u305f\u3068\u3057\u307e\u3059\u3002 \u30bf\u30a4\u30c8\u30eb \\ \u30e6\u30fc\u30b6\u30fc ta […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[195],"tags":[],"class_list":["post-6910","post","type-post","status-publish","format-standard","hentry","category-aibotalgorithm"],"_links":{"self":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/6910","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6910"}],"version-history":[{"count":80,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/6910\/revisions"}],"predecessor-version":[{"id":6995,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=\/wp\/v2\/posts\/6910\/revisions\/6995"}],"wp:attachment":[{"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6910"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6910"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.webcyou.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}