{"published":"2015-09-06 12:03:16","height":"190","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frandommemory.hatenablog.com%2Fentry%2F2015%2F09%2F06%2F120316\" title=\"\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (3) - \u3089\u3093\u3060\u3080\u306a\u8a18\u61b6\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","width":"100%","type":"rich","blog_title":"\u3089\u3093\u3060\u3080\u306a\u8a18\u61b6","url":"https://randommemory.hatenablog.com/entry/2015/09/06/120316","version":"1.0","author_url":"https://blog.hatena.ne.jp/derwind/","blog_url":"https://randommemory.hatenablog.com/","title":"\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af (3)","categories":["machine_learning","MOOC"],"description":"\u6b21\u306b\u3001\u591a\u5c64\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306e\u591a\u5024\u5206\u985e\u3092\u8003\u3048\u308b\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5c64\u306e\u6570\u3092$L$\u3068\u3057\u3066\u51fa\u529b\u5c64\u306e\u30e6\u30cb\u30c3\u30c8\u6570\u3092$K$\u3068\u3059\u308b\u3002 \u7b2c$j$\u5c64\u3067\u306e\u30e6\u30cb\u30c3\u30c8\u6570\u3092$s_j$\u3068\u3059\u308b\u3002\u7279\u306b$s_L = K$\u3067\u3042\u308b\u3002 \u7b2c$j$\u5c64\u3067\u306e\u91cd\u307f\u3092$\\Theta^j$\u3068\u3059\u308b\u3002 \u51fa\u529b\u5c64\u306e\u7b2c$k$\u30e6\u30cb\u30c3\u30c8\u304b\u3089\u306e\u51fa\u529b\u3092$h_\\Theta(\\cdot)_k$\u3068\u3059\u308b\u3002\u4e8c\u5024\u5206\u985e\u306b\u304a\u3051\u308b\u5178\u578b\u7684\u306aCost\u95a2\u6570 \\begin{equation} \\mathrm{Cost}(x,\\ y) = -y \\log(x) - (1 - y)\\log(1 - x) \\hspace{5em} (1) \\end{equation} \u3092\u57fa\u672c\u3068\u3057\u3066\u8003\u3048\u308b\u3002 \u2026","author_name":"derwind","image_url":null}