{"id":29506,"date":"2024-03-18T21:13:50","date_gmt":"2024-03-18T12:13:50","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/matlab-%e3%81%a7%e7%b2%92%e5%ad%90%e7%be%a4%e6%9c%80%e9%81%a9%e5%8c%96%e6%b3%95%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2024-03-22T21:09:23","modified_gmt":"2024-03-22T12:09:23","slug":"matlab-%e3%81%a7%e7%b2%92%e5%ad%90%e7%be%a4%e6%9c%80%e9%81%a9%e5%8c%96%e6%b3%95%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/matlab-%e3%81%a7%e7%b2%92%e5%ad%90%e7%be%a4%e6%9c%80%e9%81%a9%e5%8c%96%e6%b3%95%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"Matlab \u3067\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u6cd5\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>PSO\uff08Particle Swarm Optimization\uff09\u306eMATLAB\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n<ol>\n<li>\u30d1\u30fc\u30c6\u30a3\u30af\u30eb\u7fa4\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u5909\u6570\u306e\u521d\u671f\u5316\uff1a<\/li>\n<\/ol>\n<ol>\n<li>\u7c92\u5b50\u306e\u6570\uff08\u4f8b\uff1an_particles\uff09\u3068\u6b21\u5143\uff08\u4f8b\uff1an_dimensions\uff09\u3092\u5b9a\u7fa9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u5404\u7c92\u5b50\u306e\u4f4d\u7f6e\u30d9\u30af\u30c8\u30eb\uff08positions\u306a\u3069\uff09\u3068\u901f\u5ea6\u30d9\u30af\u30c8\u30eb\uff08velocities\u306a\u3069\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<li>Example:<br \/>\n\u5927\u57df\u6700\u9069\u4f4d\u7f6e\u30d9\u30af\u30c8\u30eb\uff08\u4f8b\u3048\u3070\u3001global_best_position\uff09\u3068\u500b\u4f53\u6700\u9069\u4f4d\u7f6e\u30d9\u30af\u30c8\u30eb\uff08\u4f8b\u3048\u3070\u3001personal_best_positions\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<li>\u60ef\u6027\u91cd\u307f\uff08\u4f8b\uff1aw\uff09\u3001\u52a0\u901f\u5ea6\u5b9a\u6570\uff08\u4f8b\uff1ac1\u3001c2\uff09\u3001\u304a\u3088\u3073\u6700\u5927\u53cd\u5fa9\u56de\u6570\uff08\u4f8b\uff1amax_iterations\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u7c92\u5b50\u7fa4\u306e\u4f4d\u7f6e\u3068\u901f\u5ea6\u3092\u521d\u671f\u5316\u3059\u308b\uff1a<\/li>\n<\/ol>\n<ol>\n<li>\u7c92\u5b50\u306e\u4f4d\u7f6e\u30d9\u30af\u30c8\u30eb\u3068\u901f\u5ea6\u30d9\u30af\u30c8\u30eb\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u306f\u3001MATLAB\u306e\u30e9\u30f3\u30c0\u30e0\u6570\u751f\u6210\u95a2\u6570\uff08\u4f8b\uff1arand\uff09\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u5404\u7c92\u5b50\u306e\u9069\u5fdc\u5ea6\u5024\u3092\u8a08\u7b97\u3059\u308b\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u7279\u5b9a\u306e\u554f\u984c\u306b\u5fdc\u3058\u3066\u9069\u5fdc\u5ea6\u95a2\u6570\u3092\u8a2d\u8a08\u3067\u304d\u308b\u3001\u7c92\u5b50\u306e\u4f4d\u7f6e\u30d9\u30af\u30c8\u30eb\u306b\u57fa\u3065\u3044\u3066\u9069\u5fdc\u5ea6\u5024\u3092\u8a08\u7b97\u3059\u308b\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u5404\u7c92\u5b50\u306e\u500b\u5225\u306e\u6700\u9069\u4f4d\u7f6e\u3068\u30b0\u30ed\u30fc\u30d0\u30eb\u6700\u9069\u4f4d\u7f6e\u3092\u66f4\u65b0\u3059\u308b\uff1a<\/li>\n<\/ol>\n<ol>\n<li>\u5404\u7c92\u5b50\u3092\u9010\u4e00\u30c1\u30a7\u30c3\u30af\u3057\u3001\u73fe\u5728\u306e\u9069\u5fdc\u5ea6\u5024\u3068\u500b\u4f53\u306e\u6700\u9069\u9069\u5fdc\u5ea6\u5024\u3092\u6bd4\u8f03\u3057\u3066\u3001\u3088\u308a\u826f\u3044\u5834\u5408\u306f\u500b\u4f53\u306e\u6700\u9069\u4f4d\u7f6e\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/li>\n<li>\u73fe\u5728\u306e\u9069\u5fdc\u5ea6\u306e\u5024\u3068\u30b0\u30ed\u30fc\u30d0\u30eb\u6700\u9069\u9069\u5fdc\u5ea6\u306e\u5024\u3092\u6bd4\u8f03\u3057\u3001\u3088\u308a\u826f\u3044\u5834\u5408\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u6700\u9069\u4f4d\u7f6e\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u5404\u7c92\u5b50\u306e\u901f\u5ea6\u3068\u4f4d\u7f6e\u3092\u66f4\u65b0\u3059\u308b\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u5168\u3066\u306e\u7c92\u5b50\u3092\u5de1\u308a\u3001\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u306e\u5f0f\u306b\u57fa\u3065\u3044\u3066\u901f\u5ea6\u3068\u4f4d\u7f6e\u3092\u66f4\u65b0\u3059\u308b\u3002<\/li>\n<li>\u66f4\u65b0\u901f\u5ea6\u306b\u304a\u3044\u3066\u306f\u6163\u6027\u91cd\u91cf\u3001\u500b\u4f53\u306e\u6700\u9069\u4f4d\u7f6e\u3001\u305d\u3057\u3066\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u6700\u9069\u4f4d\u7f6e\u3092\u8003\u616e\u306b\u5165\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u505c\u6b62\u6761\u4ef6\u3092\u6e80\u305f\u3059\u307e\u3067\u7e70\u308a\u8fd4\u3057\u66f4\u65b0\u3092\u884c\u3046\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u53cd\u5fa9\u56de\u6570\u30ab\u30a6\u30f3\u30bf\u30fc\uff08\u305f\u3068\u3048\u3070\u3001iteration\uff09\u3092\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u66f4\u65b0\u901f\u5ea6\u3001\u4f4d\u7f6e\u3001\u9069\u5fdc\u5ea6\u5024\u3001\u500b\u4f53\u306e\u6700\u9069\u4f4d\u7f6e\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u306e\u6700\u9069\u4f4d\u7f6e\u3092\u53cd\u5fa9\u66f4\u65b0\u3059\u308b\u3002<\/li>\n<li>\u6700\u5927\u53cd\u5fa9\u56de\u6570\u304c\u9054\u6210\u3055\u308c\u308b\u306a\u3069\u3001\u505c\u6b62\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u307e\u3067\u3001\u5224\u65ad\u3092\u505c\u6b62\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684MATLAB\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code>n_particles = <span class=\"hljs-number\">20<\/span>; <span class=\"hljs-comment\">% \u7c92\u5b50\u4e2a\u6570<\/span>\r\nn_dimensions = <span class=\"hljs-number\">2<\/span>; <span class=\"hljs-comment\">% \u7c92\u5b50\u7ef4\u5ea6<\/span>\r\nw = <span class=\"hljs-number\">0.5<\/span>; <span class=\"hljs-comment\">% \u60ef\u6027\u6743\u91cd<\/span>\r\nc1 = <span class=\"hljs-number\">1<\/span>; <span class=\"hljs-comment\">% \u52a0\u901f\u5e38\u65701<\/span>\r\nc2 = <span class=\"hljs-number\">2<\/span>; <span class=\"hljs-comment\">% \u52a0\u901f\u5e38\u65702<\/span>\r\nmax_iterations = <span class=\"hljs-number\">100<\/span>; <span class=\"hljs-comment\">% \u6700\u5927\u8fed\u4ee3\u6b21\u6570<\/span>\r\n\r\n<span class=\"hljs-comment\">% \u521d\u59cb\u5316\u7c92\u5b50\u4f4d\u7f6e\u548c\u901f\u5ea6<\/span>\r\npositions = <span class=\"hljs-built_in\">rand<\/span>(n_particles, n_dimensions);\r\nvelocities = <span class=\"hljs-built_in\">rand<\/span>(n_particles, n_dimensions);\r\n\r\n<span class=\"hljs-comment\">% \u521d\u59cb\u5316\u4e2a\u4f53\u6700\u4f18\u4f4d\u7f6e\u548c\u5168\u5c40\u6700\u4f18\u4f4d\u7f6e<\/span>\r\npersonal_best_positions = positions;\r\nglobal_best_position = positions(<span class=\"hljs-number\">1<\/span>, :);\r\n\r\n<span class=\"hljs-comment\">% \u8fed\u4ee3\u66f4\u65b0<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> iteration = <span class=\"hljs-number\">1<\/span>:max_iterations\r\n    <span class=\"hljs-comment\">% \u8ba1\u7b97\u9002\u5e94\u5ea6\u503c<\/span>\r\n    fitness = calculate_fitness(positions);\r\n    \r\n    <span class=\"hljs-comment\">% \u66f4\u65b0\u4e2a\u4f53\u6700\u4f18\u4f4d\u7f6e\u548c\u5168\u5c40\u6700\u4f18\u4f4d\u7f6e<\/span>\r\n    <span class=\"hljs-keyword\">for<\/span> <span class=\"hljs-built_in\">i<\/span> = <span class=\"hljs-number\">1<\/span>:n_particles\r\n        <span class=\"hljs-keyword\">if<\/span> fitness(<span class=\"hljs-built_in\">i<\/span>) &lt; calculate_fitness(personal_best_positions(<span class=\"hljs-built_in\">i<\/span>, :))\r\n            personal_best_positions(<span class=\"hljs-built_in\">i<\/span>, :) = positions(<span class=\"hljs-built_in\">i<\/span>, :);\r\n        <span class=\"hljs-keyword\">end<\/span>\r\n        <span class=\"hljs-keyword\">if<\/span> fitness(<span class=\"hljs-built_in\">i<\/span>) &lt; calculate_fitness(global_best_position)\r\n            global_best_position = positions(<span class=\"hljs-built_in\">i<\/span>, :);\r\n        <span class=\"hljs-keyword\">end<\/span>\r\n    <span class=\"hljs-keyword\">end<\/span>\r\n    \r\n    <span class=\"hljs-comment\">% \u66f4\u65b0\u901f\u5ea6\u548c\u4f4d\u7f6e<\/span>\r\n    <span class=\"hljs-keyword\">for<\/span> <span class=\"hljs-built_in\">i<\/span> = <span class=\"hljs-number\">1<\/span>:n_particles\r\n        velocities(<span class=\"hljs-built_in\">i<\/span>, :) = w * velocities(<span class=\"hljs-built_in\">i<\/span>, :) + c1 * <span class=\"hljs-built_in\">rand<\/span>(<span class=\"hljs-number\">1<\/span>, n_dimensions) .* (personal_best_positions(<span class=\"hljs-built_in\">i<\/span>, :) - positions(<span class=\"hljs-built_in\">i<\/span>, :)) + c2 * <span class=\"hljs-built_in\">rand<\/span>(<span class=\"hljs-number\">1<\/span>, n_dimensions) .* (global_best_position - positions(<span class=\"hljs-built_in\">i<\/span>, :));\r\n        positions(<span class=\"hljs-built_in\">i<\/span>, :) = positions(<span class=\"hljs-built_in\">i<\/span>, :) + velocities(<span class=\"hljs-built_in\">i<\/span>, :);\r\n    <span class=\"hljs-keyword\">end<\/span>\r\n<span class=\"hljs-keyword\">end<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306e\u4e2d\u3067\u3001calculate_fitness\u95a2\u6570\u306f\u7c92\u5b50\u306e\u9069\u5fdc\u5ea6\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u5177\u4f53\u7684\u306a\u554f\u984c\u306b\u57fa\u3065\u3044\u3066\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u306f\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306aMATLAB\u30b3\u30fc\u30c9\u306e\u624b\u9806\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u554f\u984c\u306b\u5fdc\u3058\u3066\u3001\u9069\u5b9c\u4fee\u6b63\u3084\u8abf\u6574\u304c\u5fc5\u8981\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PSO\uff08Particle Swarm Optimization\uff09\u306eMATLAB\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a \u30d1\u30fc\u30c6\u30a3\u30af\u30eb\u7fa4\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u5909\u6570\u306e\u521d\u671f\u5316\uff1a \u7c92\u5b50\u306e\u6570\uff08\u4f8b\uff1an_particles\uff09\u3068\u6b21\u5143 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-29506","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Matlab \u3067\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u6cd5\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/matlab-\u3067\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u6cd5\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Matlab \u3067\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u6cd5\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"PSO\uff08Particle Swarm 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