{"id":2490,"date":"2020-11-17T07:15:29","date_gmt":"2020-11-16T22:15:29","guid":{"rendered":"http:\/\/itoshi.main.jp\/tech\/?page_id=2490"},"modified":"2021-01-02T08:24:08","modified_gmt":"2021-01-01T23:24:08","slug":"rl_and_short-term-memory","status":"publish","type":"page","link":"http:\/\/itoshi.main.jp\/tech\/0100-rl\/rl_and_short-term-memory\/","title":{"rendered":"08 \u77ed\u671f\u8a18\u61b6\u306e\u5fc5\u8981\u6027\u3001RNN, LSTM, GRU"},"content":{"rendered":"<p>\u77ed\u671f\u8a18\u61b6\u3092\u53d6\u308a\u5165\u308c\u305f\u5f37\u5316\u5b66\u7fd2\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u3053\u3053\u304b\u3089\u306f\u3001\u4e00\u822c\u7684\u306a\u5f37\u5316\u5b66\u7fd2\u306e\u8a71\u4ee5\u5916\u306b\u3001\u7b46\u8005\u72ec\u81ea\u306e\u8003\u3048\u3082\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>\u306a\u305c\u77ed\u671f\u8a18\u61b6\u304c\u5fc5\u8981\u306a\u306e\u304b<\/h2>\n<p><a href=\"https:\/\/bsd.neuroinf.jp\/wiki\/%E8%A8%98%E6%86%B6%E3%81%AE%E5%88%86%E9%A1%9E\">\u5fc3\u7406\u5b66\u3067\u306f\u3001\u8a18\u61b6\u3092\u611f\u899a\u8a18\u61b6\u3001\u77ed\u671f\u8a18\u61b6\u3001\u9577\u671f\u8a18\u61b6\u306b\u5206\u985e\u3057\u307e\u3059<\/a>\u3002\u77ed\u671f\u8a18\u61b6\u3068\u306f\u3001\u6570\u5341\u79d2\u7a0b\u5ea6\u3057\u304b\u4fdd\u6301\u3067\u304d\u306a\u3044\u8a18\u61b6\u3068\u3082\u8a00\u308f\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306f\u3001<strong class=\"marker-yellow\">\u6700\u95771\u65e5\u304f\u3089\u3044\u4fdd\u6301\u3055\u308c\u308b\u8a18\u61b6\u3068\u3057\u3066\u3001\u77ed\u671f\u8a18\u61b6\u3068\u547c\u3076<\/strong>\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>PC\u3067\u4f8b\u3048\u308b\u306a\u3089\u3001\u96fb\u6e90\u3092\u5207\u308b\u3068\u6d88\u3048\u3066\u3057\u307e\u3046\u30e1\u30e2\u30ea\u30fc\uff08RAM\uff09\u306e\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306f\u3001\u3053\u306e\u77ed\u671f\u8a18\u61b6\u3092\u983b\u7e41\u306b\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u63a2\u3057\u7269\u3092\u3059\u308b\u3068\u304d\u306b\u306f\u3001\u306a\u3093\u3069\u3082\u540c\u3058\u7b87\u6240\u3092\u63a2\u3055\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u305d\u308c\u304c\u3067\u304d\u308b\u306e\u306f\u3001\u77ed\u671f\u8a18\u61b6\u306b\u3059\u3067\u306b\u63a2\u3057\u305f\u5834\u6240\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u6383\u9664\u3092\u3059\u308b\u3068\u304d\u306b\u3082\u540c\u3058\u3067\u3059\u3002\u306a\u3093\u3069\u3082\u540c\u3058\u5834\u6240\u3070\u304b\u308a\u6383\u9664\u3057\u306a\u3044\u306e\u306f\u3001\u77ed\u671f\u8a18\u61b6\u306b\u6383\u9664\u3057\u305f\u5834\u6240\u304c\u5165\u3063\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u666e\u901a\u306e\u5f37\u5316\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3053\u306e\u3088\u3046\u306a\u8a18\u61b6\u306e\u6a5f\u80fd\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u8a71\u3092\u6398\u308a\u4e0b\u3052\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u3088\u3046\u306a\u30bf\u30b9\u30af\u3092\u8003\u3048\u307e\u3059\u3002<strong class=\"marker-yellow\">\u30d5\u30bf\u4ed8\u304d\u30d0\u30b1\u30c4\u306e\u4e2d\u306e\u9b5a\u3092\u96c6\u3081\u308b\u30bf\u30b9\u30af<\/strong>\u3067\u3059\u3002\u3067\u304d\u308b\u3060\u3051\u591a\u304f\u306e\u9b5a\u3092\u96c6\u3081\u308b\u3053\u3068\u304c\u76ee\u7684\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_box2_frame.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_box2_frame.png\" alt=\"\" width=\"512\" height=\"291\" class=\"aligncenter size-full wp-image-2855\" srcset=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_box2_frame.png 512w, http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_box2_frame-300x171.png 300w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/p>\n<p>\u5f37\u5316\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u30ed\u30dc\u30c3\u30c8\u3092\u64cd\u4f5c\u3057\u3066\u3001\u30d0\u30b1\u30c4\u306e\u30d5\u30bf\u3092\u958b\u3051\u3066\u9b5a\u3092\u53d6\u3063\u305f\u3068\u3057\u307e\u3059\u3002\u3059\u308b\u3068\u3001\u30d0\u30b1\u30c4\u306e\u30d5\u30bf\u306f\u81ea\u52d5\u7684\u306b\u9589\u307e\u308a\u307e\u3059(\u3053\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u306b\u306a\u3063\u3066\u3044\u308b\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044)\u3002\u305d\u3057\u3066\u3001\u30ed\u30dc\u30c3\u30c8\u304c\u89b3\u5bdf\u3059\u308b\u30e2\u30cb\u30bf\u30fc\u753b\u50cf\u306f\u3001\u9b5a\u3092\u53d6\u308b\u524d\u3068\u5909\u308f\u3089\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_view_frame.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_view_frame.png\" alt=\"\" width=\"512\" height=\"275\" class=\"aligncenter size-full wp-image-2866\" srcset=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_view_frame.png 512w, http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/robo_view_frame-300x161.png 300w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/p>\n<p>\u3059\u308b\u3068\u3001\u5f37\u5316\u5b66\u7fd2\u306f\u3001\u3082\u3046\u9b5a\u304c\u3044\u306a\u3044\u306e\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u518d\u3073\u540c\u3058\u30d5\u30bf\u3092\u958b\u3051\u3088\u3046\u3068\u3059\u308b\u3067\u3057\u3087\u3046\u3002<strong class=\"marker-yellow\">\u5f37\u5316\u5b66\u7fd2\u306f\u3001\u540c\u3058\u89b3\u5bdf\u306b\u5bfe\u3057\u3066\u306f\u3044\u3064\u3082\u540c\u3058\u884c\u52d5\u3057\u304b\u3068\u308c\u306a\u3044<\/strong>\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001<strong class=\"marker-yellow\">\u30ed\u30dc\u30c3\u30c8\u306b\u77ed\u671f\u8a18\u61b6\u306e\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u305f\u3089<\/strong>\u3069\u3046\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u300c\u9b5a\u3092\u53d6\u3063\u305f\u300d\u3053\u3068\u3092\u8a18\u61b6\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u306e\u60c5\u5831\u3092\u884c\u52d5\u9078\u629e\u306b\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308c\u3070\u3001\u9b5a\u3092\u3068\u3063\u305f\u5f8c\u306f\u3001\u305d\u306e\u30d0\u30b1\u30c4\u3092\u518d\u3073\u958b\u3051\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u5225\u306a\u30d0\u30b1\u30c4\u306b\u5411\u304b\u3046\u3068\u3044\u3046\u884c\u52d5\u304c\u5b66\u7fd2\u3067\u304d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u300c\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u300d\u3068\u66f8\u3044\u305f\u306e\u306f\u3001\u77ed\u671f\u8a18\u61b6\u304c\u3042\u3063\u305f\u3068\u3057\u305f\u3082\u3001\u307e\u3060\u96e3\u3057\u3044\u554f\u984c\u304c\u6f5c\u3093\u3067\u3044\u3066\u3001\u3059\u3050\u306b\u3053\u306e\u3088\u3046\u306a\u30bf\u30b9\u30af\u304c\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u304b\u3089\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u5c11\u306a\u304f\u3068\u3082\u3001\u77ed\u671f\u8a18\u61b6\u306e\u6a5f\u80fd\u306f\u5fc5\u9808\u3060\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h2>\u8a18\u61b6\u30e6\u30cb\u30c3\u30c8<\/h2>\n<p>\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4e16\u754c\u3067\u306f\u3001\u77ed\u671f\u8a18\u61b6\u3092\u4f7f\u3046\u65b9\u6cd5\u306f\u3001<strong class=\"marker-yellow\">\u6642\u7cfb\u5217\u60c5\u5831<\/strong>\u3092\u5b66\u7fd2\u3055\u305b\u308b\u4ed5\u7d44\u307f\u3068\u3057\u3066\u767a\u5c55\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u554f\u984c\u3067\u3059\u3002<\/p>\n<p>\u5165\u529b[math]\\bf{x}(t)[\/math]\u3068[math]\\bf{y}(t)[\/math]\u306e\u30da\u30a2\u3068\u306a\u308b\u30c7\u30fc\u30bf\u304c\u3042\u308a\u307e\u3059\u3002[math]t[\/math]\u306f\u6642\u9593\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u306f[math]t=0[\/math]\u304b\u3089\u9806\u756a\u306b\u63d0\u793a\u3055\u308c\u307e\u3059\u3002\u76ee\u7684\u306f\u3001\u6642\u523b[math]t[\/math]\u306b\u304a\u3044\u3066\u3001\u904e\u53bb\u306b\u53d7\u3051\u53d6\u3063\u305f\u5165\u529b\u60c5\u5831\u5168\u3066[math]\\bf{x}(0) \\cdots \\bf{x}(t) [\/math]\u304b\u3089[math]\\bf{y}(t)[\/math]\u3092\u4e88\u6e2c\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/bb427bda241f06cec0d1b9c6c347e3de.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/bb427bda241f06cec0d1b9c6c347e3de.png\" alt=\"\" width=\"491\" height=\"426\" class=\"aligncenter size-full wp-image-2872\" srcset=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/bb427bda241f06cec0d1b9c6c347e3de.png 491w, http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/bb427bda241f06cec0d1b9c6c347e3de-300x260.png 300w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><\/a><\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u554f\u984c\u306b\u5bfe\u3057\u3066\u3001<strong class=\"marker-yellow\">RNN<\/strong>(\u518d\u5e30\u578b\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af Recurrent Neural Network)\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u8003\u3048\u3089\u308c\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn.png\" alt=\"\" width=\"491\" height=\"380\" class=\"aligncenter size-full wp-image-2877\" srcset=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn.png 491w, http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn-300x232.png 300w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><\/a><\/p>\n<p>RNN\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d9\u30af\u30c8\u30eb\u8868\u8a18\u306e\u65b9\u304c\u3059\u3063\u304d\u308a\u3057\u3066\u7406\u89e3\u3057\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn_vec.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn_vec.png\" alt=\"\" width=\"493\" height=\"280\" class=\"aligncenter size-full wp-image-2900\" srcset=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn_vec.png 493w, http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/rnn_vec-300x170.png 300w\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" \/><\/a><\/p>\n<p>\u3053\u306eRNN\u306e\u5c64\u306e\u30e6\u30cb\u30c3\u30c8[math]\\bf{h}_t[\/math]\u306f\u3001\u5165\u529b[math]\\bf{x}_t[\/math] \u3060\u3051\u3067\u306a\u304f\u3001\u81ea\u5206\u81ea\u8eab\u306e\u5c64\u306e1\u30b9\u30c6\u30c3\u30d7\u524d\u306e\u51fa\u529b[math]\\bf{h}_{t-1}[\/math]\u3082\u5165\u529b\u3068\u3057\u3066\u53d7\u3051\u3068\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e[math]\\bf{h}_{t-1}[\/math]\u306f\u3001\u524d\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u3001[math]\\bf{x}_{t-1}[\/math]\u3068[math] \\bf{h}_{t-2}[\/math]\u3092\u4f7f\u3063\u3066\u4f5c\u3089\u308c\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u66f4\u306b\u3001[math]\\bf{h}_{t-2}[\/math]\u306f\u30012\u30b9\u30c6\u30c3\u30d7\u904e\u53bb\u306e[math]\\bf{x}_{t-2}[\/math]\u3001[math]\\bf{h}_{t-3}[\/math]\u304b\u3089\u8a08\u7b97\u3055\u308c\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u521d\u3081\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u307e\u3067\u3055\u304b\u306e\u307c\u3063\u3066\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306e\u3067\u3001[math]\\bf{h}_t[\/math]\u306f\u521d\u3081\u304b\u3089\u4eca\u307e\u3067\u306e\u5165\u529b\u5168\u3066[math]\\bf{x}_0, \\bf{x}_1, \\cdots, \\bf{x}_t[\/math]\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3066\u6c7a\u307e\u3063\u305f\u5024\u3068\u3044\u3046\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e[math]\\bf{h}[\/math]\u306f\u3001\u904e\u53bb\u306e\u5165\u529b\u306e\u96c6\u7d04\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u30e1\u30e2\u30ea\u30fc\u3068\u8003\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5909\u6570\u3092\u696d\u754c\u7528\u8a9e\u3067\u306f<strong class=\"marker-yellow\">\u96a0\u308c\u72b6\u614b<\/strong>\u3068\u547c\u3073\u307e\u3059\u304c\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001<strong class=\"marker-yellow\">\u5185\u90e8\u72b6\u614b<\/strong>\u3001\u307e\u305f\u306f\u3001\u5358\u306b<strong class=\"marker-yellow\">\u30e1\u30e2\u30ea\u30fc<\/strong>\u3068\u547c\u3076\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306eRNN\u306b\u3001\u30d0\u30c3\u30af\u30d7\u30ed\u30d1\u30b2\u30fc\u30b7\u30e7\u30f3\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u521d\u3081\u306b\u4f8b\u3068\u3057\u3066\u51fa\u3057\u305f\u6642\u7cfb\u5217\u30c7\u30fc\u30bf\u3092\u8a18\u61b6\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u5b8c\u307a\u304d\u3067\u306f\u306a\u304f\u3001\u3042\u308b\u7a0b\u5ea6\u53ef\u80fd\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3068\u3044\u3044\u307e\u3059\u306e\u3082\u3001\u9577\u3044\u4f9d\u5b58\u95a2\u4fc2\u306e\u3042\u308b\u6642\u7cfb\u5217\u306f\u96e3\u3057\u304f\u3001\u5b66\u7fd2\u304c\u4e0d\u5b89\u5b9a\uff08\u52fe\u914d\u6d88\u5931\u3001\u52fe\u914d\u7206\u767a\uff09\u306b\u306a\u308b\u3068\u3044\u3046\u6b20\u70b9\u304c\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u6b20\u70b9\u3092\u514b\u670d\u3059\u308b\u305f\u3081\u306b\u8003\u6848\u3055\u308c\u305f\u306e\u304c<strong class=\"marker-yellow\">LSTM<\/strong> (Long short-term memory)\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/lstm.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/lstm.png\" alt=\"\" width=\"491\" height=\"483\" class=\"aligncenter size-full wp-image-2885\" \/><\/a><\/p>\n<p>RNN\u306b\u6bd4\u3079\u308b\u3068\u304b\u306a\u308a\u8907\u96d1\u3067\u56de\u8def\u306e\u3088\u3046\u306a\u69cb\u9020\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u30dd\u30a4\u30f3\u30c8\u306f\u3001[math]\\bf{c}_t[\/math]\u3068\u3044\u3046\u8a18\u61b6\u88c5\u7f6e\u304c\u3001[math]\\bf{h}_t[\/math]\u3068\u306f\u5225\u306b\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u30d9\u30af\u30c8\u30eb\u3067\u3042\u308b[math]\\bf{c}_t[\/math]\u306f\u3001\u7279\u5b9a\u306e\u5165\u529b[math]\\bf{x}[\/math]\u306b\u5bfe\u3057\u3066\u3001\u305d\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u305d\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u3001\u7279\u5b9a\u306e\u5165\u529b[math]\\bf{x}[\/math]\u306b\u5bfe\u3057\u3066\u3001\u51fa\u529b[math]\\bf{h}[\/math]\u306b\u53cd\u6620\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u30e2\u30c7\u30eb\u306e\u5f0f\u306b\u306f8\u500b\u306e[math]\\bf{w}[\/math]\u30684\u3064\u306e[math]\\bf{b}[\/math]\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u304cLSTM\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u5168\u3066\u30d0\u30c3\u30af\u30d7\u30ed\u30d1\u30b2\u30fc\u30b7\u30e7\u30f3\u3067\u5b66\u7fd2\u3055\u305b\u308b\u306e\u3067\u3059\u304c\u3001LSTM\u306fTensorflow\u3067\u4f7f\u7528\u53ef\u80fd\u3067\u3059\u306e\u3067\u3001\u5b66\u7fd2\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u81ea\u3089\u66f8\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f\u3053\u308c\u4ee5\u4e0a\u3001LSTM\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3064\u3044\u3066\u8e0f\u307f\u8fbc\u307f\u307e\u305b\u3093\u304c\u3001\u66f4\u306b\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f\u3001\u4ee5\u4e0b\u306e\u672c\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n<a target=\"_blank\" href=\"https:\/\/www.amazon.co.jp\/gp\/product\/4815605580\/ref=as_li_tl?ie=UTF8&#038;camp=247&#038;creative=1211&#038;creativeASIN=4815605580&#038;linkCode=as2&#038;tag=itomakoto3141-22&#038;linkId=4fa73810d82ea27ac14c3c410107ce4d\" rel=\"noopener noreferrer\"><img decoding=\"async\" border=\"0\" src=\"\/\/ws-fe.amazon-adsystem.com\/widgets\/q?_encoding=UTF8&#038;MarketPlace=JP&#038;ASIN=4815605580&#038;ServiceVersion=20070822&#038;ID=AsinImage&#038;WS=1&#038;Format=_SL110_&#038;tag=itomakoto3141-22\" ><\/a><img loading=\"lazy\" decoding=\"async\" src=\"\/\/ir-jp.amazon-adsystem.com\/e\/ir?t=itomakoto3141-22&#038;l=am2&#038;o=9&#038;a=4815605580\" width=\"1\" height=\"1\" border=\"0\" alt=\"\" style=\"border:none !important; margin:0px !important;\" \/>\u3000<a target=\"_blank\" href=\"https:\/\/www.amazon.co.jp\/gp\/product\/4873118360\/ref=as_li_tl?ie=UTF8&#038;camp=247&#038;creative=1211&#038;creativeASIN=4873118360&#038;linkCode=as2&#038;tag=itomakoto3141-22&#038;linkId=a38f41c3fdc0b9cc11bbd77d058e13e9\" rel=\"noopener noreferrer\"><img decoding=\"async\" border=\"0\" src=\"\/\/ws-fe.amazon-adsystem.com\/widgets\/q?_encoding=UTF8&#038;MarketPlace=JP&#038;ASIN=4873118360&#038;ServiceVersion=20070822&#038;ID=AsinImage&#038;WS=1&#038;Format=_SL110_&#038;tag=itomakoto3141-22\" ><\/a><img loading=\"lazy\" decoding=\"async\" src=\"\/\/ir-jp.amazon-adsystem.com\/e\/ir?t=itomakoto3141-22&#038;l=am2&#038;o=9&#038;a=4873118360\" width=\"1\" height=\"1\" border=\"0\" alt=\"\" style=\"border:none !important; margin:0px !important;\" \/><\/p>\n<p>\u3053\u306eLSTM\u3092\u4f7f\u3046\u3068\u3001\u6642\u7cfb\u5217\u30c7\u30fc\u30bf\u3092\u5b66\u7fd2\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u4f8b\u306f\u3001<a href=\"http:\/\/itoshi.main.jp\/tech\/deeplearning\/lstm-keras\/\">LSTM\u3092Keras\u3067\u52d5\u304b\u3059\u3000\u30d1\u30eb\u30b9\u6ce2\u306e\u4e88\u6e2c<\/a>\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u306e\u3067\u3001\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u305d\u308c\u306b\u3057\u3066\u3082\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3092\u773a\u3081\u308b\u3068\u3001<strong class=\"marker-yellow\">\u5f37\u5316\u5b66\u7fd2\u306e\u77ed\u671f\u8a18\u61b6\u306b\u3046\u3063\u3066\u3064\u3051<\/strong>\u306e\u3088\u3046\u306b\u601d\u3048\u3066\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u89b3\u6e2c\u3092\u5165\u529b\u3068\u3057\u305f\u5834\u5408\u3001\u4ee5\u4e0b\u3088\u3046\u306a\u3053\u3068\u304c\u53ef\u80fd\u306a\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u3042\u308b\u899a\u3048\u308b\u3079\u304d\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u89b3\u5bdf\u3055\u308c\u305f\u3089\uff08\u524d\u306e\u4f8b\u3067\u306f\u3001\u9b5a\u3092\u53d6\u3063\u305f\u3068\u3044\u3046\u89b3\u5bdf\uff09\u3001[math]\\bf{c}[\/math]\u306e\u7279\u5b9a\u306e\u8981\u7d20\u30921\u306b\u3057\u307e\u3059\u3002\u3053\u306e1\u306f\u305a\u3063\u3068\u4fdd\u6301\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u6b21\u306e\u7279\u5b9a\u306e\u89b3\u5bdf\u30d1\u30bf\u30fc\u30f3\u304c\u5165\u529b\u3055\u308c\u305f\u3068\u304d\uff08\u30d0\u30b1\u30c4\u306e\u30d5\u30bf\u306e\u89b3\u5bdf\uff09\u3001\u305d\u306e\u8a18\u61b6\u3057\u3066\u3044\u305f1\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u51fa\u529b\u3092\u5909\u5316\u3055\u305b\u308b\u306e\u3067\u3059\uff08\u30d5\u30bf\u3092\u958b\u3051\u308b\u3068\u3044\u3046\u884c\u52d5\u306eQ\u5024\u3092\u4e0b\u3052\u308b\uff09\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001LSTM\u306e\u56de\u8def\u306f\u5c11\u3057\u5197\u9577\u7684\u306a\u6c17\u3082\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001f\u306f\u5fd8\u5374\u30b2\u30fc\u30c8\u3067i\u306f\u5165\u529b\u30b2\u30fc\u30c8\u3092\u610f\u5473\u3057\u307e\u3059\u304c\u3001\u72ec\u7acb\u306b\u5909\u3048\u308b\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001f + i = 1 \u306e\u3088\u3046\u306a\u5236\u9650\u304c\u3042\u3063\u3066\u3082\u3088\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u3088\u3046\u306a\u610f\u5473\u5408\u3044\u3060\u3068\u601d\u3046\u306e\u3067\u3059\u304c\u3001LSTM\u3092\u5358\u7d14\u5316\u3057\u305f<strong class=\"marker-yellow\">GRU<\/strong>\uff08Gated recurrent unit\uff09\u3068\u3044\u3046\u30e2\u30c7\u30eb\u304c\u63d0\u6848\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3082Tensorflow \u3067\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/gru.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/itoshi.main.jp\/tech\/wp-content\/uploads\/2020\/12\/gru.png\" alt=\"\" width=\"491\" height=\"449\" class=\"aligncenter size-full wp-image-2886\" \/><\/a><\/p>\n<p>GRU\u3067\u306f\u3001f\u306e\u5fd8\u5374\u30b2\u30fc\u30c8\u3068i\u306e\u5165\u529b\u30b2\u30fc\u30c8\u304c\u8db3\u3057\u30661\u306b\u306a\u308b\u5236\u9650\u304c\u5165\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u3057\u3066\u3001LSTM\u306b\u5408\u3063\u305f[math]\\bf{c}[\/math]\u304c\u5ec3\u6b62\u3055\u308c\u3001\u30e1\u30e2\u30ea\u30fc\u306f[math]\\bf{h}[\/math]\u3060\u3051\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30e2\u30c7\u30eb\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u30016\u500b\u306e[math]\\bf{w}[\/math]\u30683\u3064\u306e[math]\\bf{b}[\/math]\u304c\u3042\u308a\u307e\u3059\u304c\u3001LSTM\u3088\u308a\u3082\u5c11\u306a\u304f\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>GRU\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u672c\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n<a target=\"_blank\" href=\"https:\/\/www.amazon.co.jp\/gp\/product\/4815605580\/ref=as_li_tl?ie=UTF8&#038;camp=247&#038;creative=1211&#038;creativeASIN=4815605580&#038;linkCode=as2&#038;tag=itomakoto3141-22&#038;linkId=4fa73810d82ea27ac14c3c410107ce4d\" rel=\"noopener noreferrer\"><img decoding=\"async\" border=\"0\" src=\"\/\/ws-fe.amazon-adsystem.com\/widgets\/q?_encoding=UTF8&#038;MarketPlace=JP&#038;ASIN=4815605580&#038;ServiceVersion=20070822&#038;ID=AsinImage&#038;WS=1&#038;Format=_SL110_&#038;tag=itomakoto3141-22\" ><\/a><img loading=\"lazy\" decoding=\"async\" src=\"\/\/ir-jp.amazon-adsystem.com\/e\/ir?t=itomakoto3141-22&#038;l=am2&#038;o=9&#038;a=4815605580\" width=\"1\" height=\"1\" border=\"0\" alt=\"\" style=\"border:none !important; margin:0px !important;\" \/>\u3000<\/p>\n<p>\u4f59\u8a08\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u524a\u6e1b\u3057\u305f\uff08\u3068\u8457\u8005\u306f\u601d\u3063\u3066\u3044\u308b\uff09GRU\u306e\u65b9\u304c\u3001LSTM\u3088\u308a\u3082\u5b66\u7fd2\u304c\u901f\u3044\u306e\u3067\u306f\u3068\u671f\u5f85\u304c\u3042\u3063\u305f\u306e\u3067\u3001memoryRL\u3067\u306f\u3001LSTM\u3060\u3051\u3067\u306a\u304fGRU\u306e\u3067\u3082\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002<\/p>\n<p><a href=\"http:\/\/itoshi.main.jp\/tech\/\">[top]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/rl_introduction\/\">[01]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/rl_setting\/\">[02]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/start_memoryrl\/\">[03]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/rl-task\/\">[04]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/env_swamptour\/\">[05]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/q-learning\/\">[06]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/qnet\/\">[07]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/rl_and_short-term-memory\/\">[08]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/lstm_gru\/\">\u6b21\u306f[09]<\/a> <a href=\"http:\/\/itoshi.main.jp\/tech\/0100-rl\/corrido\/\">[10]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u77ed\u671f\u8a18\u61b6\u3092\u53d6\u308a\u5165\u308c\u305f\u5f37\u5316\u5b66\u7fd2\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u3053\u3053\u304b\u3089\u306f\u3001\u4e00\u822c\u7684\u306a\u5f37\u5316\u5b66\u7fd2\u306e\u8a71\u4ee5\u5916\u306b\u3001\u7b46\u8005\u72ec\u81ea\u306e\u8003\u3048\u3082\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002 \u306a\u305c\u77ed\u671f\u8a18\u61b6\u304c\u5fc5\u8981\u306a\u306e\u304b 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