{"id":102713,"date":"2024-05-23T14:52:41","date_gmt":"2024-05-23T14:52:41","guid":{"rendered":"https:\/\/science-hub.click\/%E4%B8%BB%E6%88%90%E5%88%86%E5%88%86%E6%9E%90%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E8%A9%B3%E3%81%97%E3%81%8F%E8%A7%A3%E8%AA%AC\/"},"modified":"2024-05-23T14:52:41","modified_gmt":"2024-05-23T14:52:41","slug":"%E4%B8%BB%E6%88%90%E5%88%86%E5%88%86%E6%9E%90%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E8%A9%B3%E3%81%97%E3%81%8F%E8%A7%A3%E8%AA%AC","status":"publish","type":"post","link":"https:\/\/science-hub.click\/?p=102713","title":{"rendered":"\u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac"},"content":{"rendered":"<div><div><h2>\u5c0e\u5165<\/h2><p><b>\u4e3b\u6210\u5206\u5206\u6790<\/b>(PCA) \u306f\u3001\u30c7\u30fc\u30bf\u5206\u6790\u30d5\u30a1\u30df\u30ea\u30fc\u306e\u624b\u6cd5\u3067\u3042\u308a\u3001\u3088\u308a\u4e00\u822c\u7684\u306b\u306f\u591a\u5909\u91cf\u7d71\u8a08\u306e\u624b\u6cd5\u3067\u3042\u308a\u3001\u76f8\u4e92\u306b\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b (\u7d71\u8a08\u3067\u306f\u300c\u76f8\u95a2\u304c\u3042\u308b\u300d\u3068\u547c\u3070\u308c\u308b) \u5909\u6570\u3092\u76f8\u4e92\u306b\u65b0\u3057\u3044\u72ec\u7acb\u5909\u6570 (\u3057\u305f\u304c\u3063\u3066\u300c\u76f8\u95a2\u304c\u306a\u3044\u300d) \u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002 \u3002\u3053\u308c\u3089\u306e\u65b0\u3057\u3044\u5909\u6570\u306f\u300c\u4e3b\u6210\u5206\u300d\u307e\u305f\u306f\u8ef8\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b9f\u52d9\u8005\u306f\u3001\u60c5\u5831\u3092\u521d\u671f\u306e\u5909\u6570\u6570\u3088\u308a\u3082\u9650\u5b9a\u3055\u308c\u305f<span><a href=\"https:\/\/science-hub.click\/?p=71097\">\u6570<\/a><\/span>\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p><p>\u3053\u308c\u306f\u3001\u5e7e\u4f55\u5b66\u7684 (\u6700\u5927<span>\u6163\u6027<\/span>\u306e\u65b9\u5411\u306b\u5f93\u3063\u305f\u65b0\u3057\u3044\u5e7e\u4f55\u5b66\u7684\u7a7a\u9593\u306b\u304a\u3051\u308b\u5909\u6570\u306e\u8868\u73fe) \u3068<span><a href=\"https:\/\/science-hub.click\/?p=48844\">\u7d71\u8a08\u7684<\/a><\/span>(\u30c7\u30fc\u30bf\u306e\u5909\u52d5\u6027 (<span><a href=\"https:\/\/science-hub.click\/?p=71701\">\u5206\u6563<\/a><\/span>) \u3092\u6700\u3082\u3088\u304f\u8aac\u660e\u3059\u308b\u72ec\u7acb\u8ef8\u306e\u63a2\u7d22) \u306e\u4e21\u65b9\u3092\u5099\u3048\u305f\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u3059\u3002 <span><i>N \u500b\u306e<\/i><\/span>\u78ba\u7387\u5909\u6570\u306e<span><a href=\"https:\/\/science-hub.click\/?p=57227\">\u30bb\u30c3\u30c8<\/a><\/span><b>\u3092\u5727\u7e2e\u3057<\/b>\u305f\u3044\u5834\u5408\u306f\u3001\u6163\u6027\u307e\u305f\u306f\u8aac\u660e\u3055\u308c\u305f\u5206\u6563\u306e<span><a href=\"https:\/\/science-hub.click\/?p=43578\">\u89b3\u70b9<\/a><\/span><span><a href=\"https:\/\/science-hub.click\/?p=98747\">\u304b\u3089<\/a><\/span>\u3001PCA \u306e\u6700\u521d\u306e<span><i>n<\/i><\/span><b>\u8ef8<\/b>\u304c<b>\u3088\u308a\u826f\u3044\u9078\u629e<\/b>\u3068\u306a\u308a\u307e\u3059 (\u4ee5\u4e0b\u3092\u53c2\u7167)\u3002<\/p><figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/bBEKlulWPH4\/0.jpg\" style=\"width:100%;\"\/><\/figure><h2>\u6b74\u53f2<\/h2><div><div><figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/9sn0b3tml50\/0.jpg\" style=\"width:100%;\"\/><\/figure><div>\u30d4\u30a2\u30bd\u30f3\u306e 1901 \u5e74\u306e\u8a18\u4e8b\u3088\u308a: \u300c\u6700\u9069\u306a\u7dda\u300d\u306e<span>\u691c\u7d22<\/span><\/div><\/div><\/div><p>PCA \u306f\u30011901 \u5e74\u306b\u51fa\u7248\u3055\u308c\u305f\u30ab\u30fc\u30eb \u30d4\u30a2\u30bd\u30f3\u306e\u8ad6\u6587\u3092\u30bd\u30fc\u30b9\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u03c7\u00b2 \u30c6\u30b9\u30c8\u306e\u7236\u306f\u3001\u56de\u5e30\u3068\u3044\u304f\u3064\u304b\u306e\u5909\u6570\u9593\u306e\u76f8\u95a2\u306e\u5206\u91ce\u3067\u7814\u7a76\u3092\u62e1\u5f35\u3057\u307e\u3057\u305f\u3002\u30d4\u30a2\u30bd\u30f3\u306f\u3001\u3053\u308c\u3089\u306e\u76f8\u95a2\u95a2\u4fc2\u3092\u3001(\u56de\u5e30\u306e\u5834\u5408\u306e\u3088\u3046\u306b) \u3042\u308b<span><a href=\"https:\/\/science-hub.click\/?p=72623\">\u5909\u6570\u3092<\/a><\/span>\u4ed6\u306e\u5909\u6570\u304b\u3089\u8aac\u660e\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u3053\u308c\u3089\u306e\u5909\u6570\u306b\u542b\u307e\u308c\u308b\u60c5\u5831\u3092\u8aac\u660e\u3057\u3001\u8981\u7d04\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p><p> PCA \u306f\u4f9d\u7136\u3068\u3057\u3066 Karhunen-Lo\u00e8ve \u5909\u63db\u307e\u305f\u306f Hotelling \u5909\u63db\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u30011930 \u5e74\u4ee3\u306b Harold Hotelling \u306b\u3088\u3063\u3066\u3055\u3089\u306b<span><a href=\"https:\/\/science-hub.click\/?p=86517\">\u958b\u767a\u3055\u308c<\/a><\/span>\u3001\u6b63\u5f0f\u5316\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u30a2\u30e1\u30ea\u30ab\u306e\u7d4c\u6e08\u5b66\u8005\u304a\u3088\u3073\u7d71\u8a08\u5b66\u8005\u306e\u6570\u5b66\u7684<span><a href=\"https:\/\/science-hub.click\/?p=15958\">\u80fd\u529b\u306f<\/a><\/span>\u3001PCA \u304c\u305d\u306e\u4e00\u90e8\u3067\u3042\u308b\u56e0\u5b50\u5206\u6790\u306e<span><a href=\"https:\/\/science-hub.click\/?p=7924\">\u4e00\u822c\u5316\u3067<\/a><\/span>\u3042\u308b<span title=\"\u6b63\u898f\u5206\u6790 (\u30da\u30fc\u30b8\u304c\u5b58\u5728\u3057\u307e\u305b\u3093)\">\u6b63\u6e96\u5206\u6790<\/span>\u306e\u958b\u767a\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3057\u305f\u3002<\/p><p>\u73fe\u5728\u3001\u5fdc\u7528\u5206\u91ce\u306f<span><a href=\"https:\/\/science-hub.click\/?p=96979\">\u751f\u7269\u5b66<\/a><\/span>\u304b\u3089\u7d4c\u6e08\u793e\u4f1a\u7814\u7a76\u3001\u305d\u3057\u3066\u6700\u8fd1\u3067\u306f\u753b\u50cf\u51e6\u7406\u306b\u81f3\u308b\u307e\u3067\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002 ACP \u306f\u4e3b\u306b\u6b21\u306e\u76ee\u7684\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p><ul><li>\u30c7\u30fc\u30bf\u3092\u8aac\u660e\u304a\u3088\u3073\u8996\u899a\u5316\u3059\u308b\u3002<\/li><li>\u305d\u308c\u3089\u306e\u76f8\u95a2\u95a2\u4fc2\u3092\u89e3\u9664\u3057\u307e\u3059\u3002\u65b0\u3057\u3044\u8ef8\u3067\u69cb\u6210\u3055\u308c\u308b\u65b0\u3057\u3044\u30d9\u30fc\u30b9\u3067\u306f\u3001\u5909\u6570\u306e\u76f8\u95a2\u95a2\u4fc2\u306f\u30bc\u30ed\u3067\u3059\u3002<\/li><li><i>\u5fd8\u308c\u308b<\/i>\u3053\u3068\u306b\u6c7a\u3081\u305f\u8ef8\u306f<i>\u30ce\u30a4\u30ba\u306e\u591a\u3044<\/i>\u8ef8\u3067\u3042\u308b\u3053\u3068\u3092\u8003\u616e\u3057\u3066\u3001\u305d\u308c\u3089\u306e<span title=\"\u30ce\u30a4\u30ba\u9664\u53bb (\u30da\u30fc\u30b8\u304c\u5b58\u5728\u3057\u306a\u3044)\">\u30ce\u30a4\u30ba\u3092\u9664\u53bb\u3057\u307e\u3059<\/span>\u3002<\/li><\/ul><h2>\u30b5\u30f3\u30d7\u30eb<\/h2><p>\u901a\u5e38\u3001\u3053\u308c\u3089\u306e\u5909\u6570\u306e<span><i>K \u500b<\/i><\/span>\u306e\u5171\u540c\u5b9f\u73fe\u306e<span><a href=\"https:\/\/science-hub.click\/?p=9538\">\u30b5\u30f3\u30d7\u30eb<\/a><\/span>\u304b\u3089\u65e2\u77e5\u306e<i>N \u500b<\/i>\u306e\u78ba\u7387\u5909\u6570<i>X<\/i> <sub>1<\/sub> , \u2026, <i>X <sub>N<\/sub><\/i>\u306e\u30bb\u30c3\u30c8\u306b PCA \u3092\u9069\u7528\u3057\u307e\u3059\u3002<\/p><p>\u3053\u308c\u3089<i>N \u500b\u306e<\/i>\u78ba\u7387\u5909\u6570\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001 <i>K<\/i>\u884c<i>N<\/i>\u5217\u306e\u884c\u5217<i>M<\/i>\u3067\u69cb\u6210\u3067\u304d\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {M=\\begin{bmatrix} X_{1,1} &amp; \\cdots &amp; X_{1,N} \\\\ \\vdots &amp; \\ddots &amp; \\vdots \\\\ X_{K,1} &amp; \\cdots &amp; X_{K,N}\\end{bmatrix}} $$<\/div><\/dd><\/dl><p>\u5404<span><a href=\"https:\/\/science-hub.click\/?p=20826\">\u78ba\u7387\u5909\u6570<\/a><\/span><i>X <sub>n<\/sub><\/i> = ( <i>X<\/i> <sub><i>1<\/i> , n<\/sub> , \u2026, <i>X<\/i> <sub><i>K<\/i> , <i>n<\/i><\/sub> )&#8217; \u306b\u306f<span><a href=\"https:\/\/science-hub.click\/?p=87799\">\u5e73\u5747<\/a><\/span>\u304c\u3042\u308a\u307e\u3059\u3002 <div class=\"math-formual notranslate\">$$ {\\bar X_n} $$<\/div>\u3068\u6a19\u6e96\u504f\u5dee<sub><i>\u03c3<\/i><\/sub><\/p><figure class=\"wp-block-image size-large is-style-default\">\n<img decoding=\"async\" alt=\"\u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\" class=\"aligncenter\" onerror=\"this.style.display=none;\" src=\"https:\/\/img.youtube.com\/vi\/mMmTHoZKWTI\/0.jpg\" style=\"width:100%;\"\/><\/figure><h3><span><span><a href=\"https:\/\/science-hub.click\/?p=108253\">\u91cd\u3055<\/a><\/span><\/span><\/h3><p>\u5b9f\u73fe (\u884c\u5217<i>M<\/i>\u306e\u8981\u7d20) \u306e\u78ba\u7387\u304c\u7b49\u3057\u3044\u5834\u5408\u3001\u5404\u5b9f\u73fe (\u884c\u5217\u306e\u8981\u7d20<span><i>X<\/i> <sub><i>i<\/i> \u3001 <i>j<\/i><\/sub><\/span> ) \u306f\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u7279\u6027\u306e\u8a08\u7b97\u306b\u304a\u3044\u3066\u540c\u3058<span>1\/ <i>n \u306e<\/i><\/span>\u91cd\u8981\u6027\u3092\u6301\u3061\u307e\u3059\u3002\u307e\u305f\u3001\u5909\u6570\u306e\u5404\u7d50\u5408\u5b9f\u73fe\u306b\u7570\u306a\u308b\u91cd\u307f<span><i>p<\/i> <sub><i>i \u3092<\/i><\/sub><\/span>\u9069\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059 (\u8abf\u6574\u3055\u308c\u305f\u30b5\u30f3\u30d7\u30eb\u3001\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f<span><a href=\"https:\/\/science-hub.click\/?p=25552\">\u30c7\u30fc\u30bf<\/a><\/span>\u306a\u3069\u306e\u5834\u5408)\u3002\u3053\u308c\u3089\u306e\u91cd\u307f\u306f\u3001\u5408\u8a08\u304c 1 \u306e\u6b63\u306e\u6570\u3067\u3042\u308a\u3001\u30b5\u30a4\u30ba<i>K<\/i>\u306e<span><a href=\"https:\/\/science-hub.click\/?p=33864\">\u5bfe\u89d2\u884c\u5217<\/a><\/span><i>D<\/i>\u3067\u8868\u3055\u308c\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {D=\\begin{bmatrix} p_{1} &amp; &amp; &amp; 0 \\\\ &amp; p_{2} &amp; &amp; \\\\ &amp; &amp; \\ddots &amp; \\\\ 0 &amp; &amp; &amp; p_{K}\\end{bmatrix}} $$<\/div><\/dd><\/dl><p>\u91cd\u307f\u304c\u7b49\u3057\u3044\u6700\u3082\u4e00\u822c\u7684\u306a\u30b1\u30fc\u30b9\u3067\u306f\u3001 <div class=\"math-formual notranslate\">$$ {D = {1 \\over K} I} $$<\/div>\u3053\u3053\u3067\u3001 <span><i>I \u306f<\/i><\/span><span><a href=\"https:\/\/science-hub.click\/?p=36866\">\u5358\u4f4d\u884c\u5217<\/a><\/span>\u3067\u3059\u3002<\/p><h3><span>\u30b5\u30f3\u30d7\u30eb\u5909\u63db<\/span><\/h3><p><span><a href=\"https:\/\/science-hub.click\/?p=66129\">\u30d9\u30af\u30c8\u30eb<\/a><\/span><div class=\"math-formual notranslate\">$$ {(\\bar X_1, \\cdots, \\bar X_N)} $$<\/div>\u70b9\u7fa4\u306e\u91cd\u5fc3\u3067\u3059\u3002 <b>g<\/b>\u3068\u3088\u304f\u8a00\u308f\u308c\u307e\u3059\u3002 <b><span><i>g<\/i> = <i>M<\/i> &#8216; <i>D<\/i> 1<\/span><\/b>\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067<b>1<\/b>\u306f\u3001\u3059\u3079\u3066\u306e\u6210\u5206\u304c 1 \u306b\u7b49\u3057\u3044<span><i>R<\/i> <sup><i>K<\/i><\/sup><\/span>\u306e\u30d9\u30af\u30c8\u30eb\u3092\u793a\u3057\u307e\u3059\u3002<\/p><p>\u884c\u5217<i>M<\/i>\u306f\u901a\u5e38\u3001\u91cd\u5fc3\u3092\u4e2d\u5fc3\u3068\u3057\u3066\u3044\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {\\bar M=\\begin{bmatrix} X_{1,1}-\\bar X_1 &amp; \\cdots &amp; X_{1,N}-\\bar X_N \\\\ \\vdots &amp; \\ddots &amp; \\vdots \\\\ X_{K,1}-\\bar X_1 &amp; \\cdots &amp; X_{K,N}-\\bar X_N\\end{bmatrix} = M &#8211; 1g&#8217;} $$<\/div> \u3002<\/dd><\/dl><p><b>\u524a\u6e1b\u3059\u308b<\/b>\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {\\tilde M=\\begin{bmatrix} {X_{1,1}-\\bar X_1\\over \\sigma(X_1)} &amp; \\cdots &amp; {X_{1,N}-\\bar X_N\\over \\sigma(X_N)} \\\\ \\vdots &amp; \\ddots &amp; \\vdots \\\\ {X_{K,1}-\\bar X_1\\over \\sigma(X_1)} &amp; \\cdots &amp; {X_{K,N}-\\bar X_N\\over \\sigma(X_N)}\\end{bmatrix}} $$<\/div> \u3002<\/dd><\/dl><p>\u70b9\u7fa4 (\u3064\u307e\u308a\u3001\u78ba\u7387\u5909\u6570 ( <i>X<\/i> <sub>1<\/sub> , \u2026, <i>X <sub>N<\/sub><\/i> ) \u306e<i>K<\/i>\u500b\u306e\u5b9f\u73fe) \u3092\u524a\u6e1b\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u9078\u629e\u306f\u3001\u30e2\u30c7\u30eb\u306e\u9078\u629e\u3067\u3059\u3002<\/p><ul><li>\u30af\u30e9\u30a6\u30c9\u3092\u524a\u6e1b\u3057\u306a\u3044\u5834\u5408\u3001\u5206\u6563\u304c\u5927\u304d\u3044\u5909\u6570\u306f\u3001PCA \u306e<span><a href=\"https:\/\/science-hub.click\/?p=95765\">\u3059\u3079\u3066\u306e<\/a><\/span>\u52b9\u679c\u3092\u305d\u308c\u81ea\u4f53\u306b\u300c\u5f15\u304d\u8fbc\u307f\u300d\u307e\u3059\u3002<\/li><li>\u96f2\u3092\u6e1b\u3089\u3059\u3068\u3001<span><a href=\"https:\/\/science-hub.click\/?p=83333\">\u30ce\u30a4\u30ba<\/a><\/span>\u3060\u3051\u306e\u5909\u6570\u306f\u3001\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b\u5909\u6570\u3068\u540c\u3058\u898b\u304b\u3051\u306e\u5206\u6563\u306b\u306a\u308a\u307e\u3059\u3002<\/li><\/ul><h3><span>\u5171\u5206\u6563\u3068\u76f8\u95a2\u306e\u8a08\u7b97<\/span><\/h3><p>\u884c\u5217<span><i>M<\/i><\/span>\u304c\u6b21\u306e\u3088\u3046\u306b\u5909\u63db\u3055\u308c\u308b\u3068\u3001 <div class=\"math-formual notranslate\">$$ {\\bar M} $$<\/div>\u307e\u305f\u306f<div class=\"math-formual notranslate\">$$ {\\tilde M} $$<\/div> \u3001\u5358\u7d14\u306b\u8ee2\u7f6e\u3092\u4e57\u7b97\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p><ul><li> <i>M<\/i>\u304c\u524a\u6e1b\u3055\u308c\u306a\u3044\u5834\u5408\u3001 <i>X<\/i> <sub>1<\/sub> , \u2026, <i>X <sub>N<\/sub><\/i>\u306e<span><a href=\"https:\/\/science-hub.click\/?p=20502\">\u5206\u6563\u5171\u5206\u6563\u884c\u5217<\/a><\/span>\u3002<\/li><li> <i>M<\/i>\u304c\u6e1b\u5c11\u3057\u305f\u5834\u5408\u306e<i>X<\/i> <sub>1<\/sub> , \u2026, <i>X <sub>N<\/sub><\/i>\u306e<span><a href=\"https:\/\/science-hub.click\/?p=7008\">\u76f8\u95a2\u884c\u5217<\/a><\/span>\u3002<\/li><\/ul><p>\u3053\u308c\u3089 2 \u3064\u306e\u884c\u5217\u306f\u3001(\u30b5\u30a4\u30ba<i>N<\/i>\u306e) \u6b63\u65b9\u884c\u5217\u3067\u3001\u5bfe\u79f0\u3067\u3001\u5b9f\u6570\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u308c\u3089\u306f\u6b63\u898f\u76f4\u4ea4\u57fa\u5e95\u3067\u5bfe\u89d2\u5316\u53ef\u80fd\u3067\u3059\u3002<\/p><p>\u3088\u308a\u4e00\u822c\u7684\u306b\u306f\u3001\u5206\u6563\u5171\u5206\u6563\u884c\u5217\u306f\u6b21\u306e\u3088\u3046\u306b\u66f8\u304b\u308c\u307e\u3059\u3002 <div class=\"math-formual notranslate\">$$ {V = M&#8217;DM &#8211; gg&#8217; = \\bar M&#8217; \\cdot D \\cdot \\bar M} $$<\/div> \u3002 <span><i>D<\/i> <sub>1 \/ <i>s \u3092<\/i><\/sub><\/span>\u6a19\u6e96\u504f\u5dee\u306e\u9006\u884c\u5217\u306e\u5bfe<span><a href=\"https:\/\/science-hub.click\/?p=100875\">\u89d2<\/a><\/span>\u884c\u5217\u3068\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {D_{1\/s} = \\begin{bmatrix} 1\/s_{1} &amp; &amp; 0 \\\\ &amp; \\ddots &amp; \\\\ 0 &amp; &amp; 1\/s_{N}\\end{bmatrix}} $$<\/div><\/dd><\/dl><p>\u305d\u3057\u3066<div class=\"math-formual notranslate\">$$ {D_{1\/s^2}} $$<\/div>\u5206\u6563\u306e\u9006\u884c\u5217\u306e\u5bfe\u89d2\u884c\u5217\u3092\u8a08\u7b97\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {\\tilde M = \\bar M \\cdot D_{1\/s}} $$<\/div> \u3002<\/dd><\/dl><p> <i>N<\/i>\u500b\u306e\u5909\u6570\u9593\u306e 2 \u3064\u305a\u3064\u306e\u7dda\u5f62\u76f8\u95a2\u4fc2\u6570\u306e\u884c\u5217<i><b>( R<\/b><\/i>\u3067\u793a\u3055\u308c\u307e\u3059) \u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3055\u308c\u307e\u3059\u3002 <\/p><dl><dd><div class=\"math-formual notranslate\">$$ {R = \\tilde M&#8217; \\cdot D \\cdot \\tilde M} $$<\/div> \u3002<\/dd><\/dl><\/div><h2 class=\"ref_link\">\u53c2\u8003\u8cc7\u6599<\/h2><ol><li><a class=\"notranslate\" href=\"https:\/\/ar.wikipedia.org\/wiki\/%D8%AA%D8%AD%D9%84%D9%8A%D9%84_%D8%A7%D9%84%D8%B9%D9%86%D8%B5%D8%B1_%D8%A7%D9%84%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A\">\u062a\u062d\u0644\u064a\u0644 \u0627\u0644\u0639\u0646\u0635\u0631 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u2013 arabe<\/a><\/li><li><a class=\"notranslate\" href=\"https:\/\/ast.wikipedia.org\/wiki\/Anal%C3%ADs_de_componentes_principales\">Anal\u00eds de componentes principales \u2013 asturien<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/ca.wikipedia.org\/wiki\/An%C3%A0lisi_de_components_principals\">An\u00e0lisi de components principals \u2013 catalan<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/cs.wikipedia.org\/wiki\/Anal%C3%BDza_hlavn%C3%ADch_komponent\">Anal\u00fdza hlavn\u00edch komponent \u2013 tch\u00e8que<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/de.wikipedia.org\/wiki\/Hauptkomponentenanalyse\">Hauptkomponentenanalyse \u2013 allemand<\/a><\/li><li> <a class=\"notranslate\" href=\"https:\/\/en.wikipedia.org\/wiki\/Principal_component_analysis\">Principal component analysis \u2013 anglais<\/a><\/li><\/ol><\/div>\n<div class=\"feature-video\">\n <h2>\n  \u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u30fb\u95a2\u9023\u52d5\u753b\n <\/h2>\n <div class=\"video-item\">\n  \n  <figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n   <div class=\"wp-block-embed__wrapper\">\n    <iframe loading=\"lazy\" title=\"\u30105\u5206\u3067\u5206\u304b\u308b\u3011\u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u89e3\u8aac\uff01\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/5uEp2g35qEU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n   <\/div>\n  <\/figure>\n  \n <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5c0e\u5165 \u4e3b\u6210\u5206\u5206\u6790(PCA) \u306f\u3001\u30c7\u30fc\u30bf\u5206\u6790\u30d5\u30a1\u30df\u30ea\u30fc\u306e\u624b\u6cd5\u3067\u3042\u308a\u3001\u3088\u308a\u4e00\u822c\u7684\u306b\u306f\u591a\u5909\u91cf\u7d71\u8a08\u306e\u624b\u6cd5\u3067\u3042\u308a\u3001\u76f8\u4e92\u306b\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b (\u7d71\u8a08\u3067\u306f\u300c\u76f8\u95a2\u304c\u3042\u308b\u300d\u3068\u547c\u3070\u308c\u308b) \u5909\u6570\u3092\u76f8\u4e92\u306b\u65b0\u3057\u3044\u72ec\u7acb\u5909\u6570 (\u3057\u305f\u304c\u3063\u3066\u300c\u76f8\u95a2\u304c\u306a\u3044\u300d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":102714,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/img.youtube.com\/vi\/5uEp2g35qEU\/0.jpg","fifu_image_alt":"\u4e3b\u6210\u5206\u5206\u6790\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac","footnotes":""},"categories":[5],"tags":[18072,11,13,10,14,89519,38514,2921,12,8,16,15,9],"class_list":["post-102713","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dictionary","tag-composantes","tag-techniques","tag-technologie","tag-actualite","tag-news","tag-plessis-bourre","tag-principales","tag-analyse","tag-dossier","tag-definition","tag-sciences","tag-article","tag-explications"],"_links":{"self":[{"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/posts\/102713"}],"collection":[{"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/science-hub.click\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=102713"}],"version-history":[{"count":0,"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/posts\/102713\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/science-hub.click\/index.php?rest_route=\/wp\/v2\/media\/102714"}],"wp:attachment":[{"href":"https:\/\/science-hub.click\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=102713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-hub.click\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=102713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-hub.click\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=102713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}