{"description":"Coursera\u306e\u8b1b\u7fa9\u306a\u306e\u3067\u3001\u30eb\u30fc\u8a9e\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u3092\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u3002 \u6982\u8981 Cost function\u3092minimize\u3059\u308b\u306b\u306f\u3001\u50be\u304d\u304c0\u306b\u306a\u308b\u65b9\u5411\u306b\u03b8\u3092\u8fd1\u3065\u3051\u3066\u3044\u304f\u3002 Cost function\u3092\u03b8\u3067(Partial )derivative\u3059\u308b\u3053\u3068\u3067\u50be\u304d\u3092\u6c42\u3081\u308b\u3068\u3001\u3069\u3061\u3089\u306e\u65b9\u5411\u306b\u884c\u3051\u3070\u6700\u5c0f\u306e\u5730\u70b9\u304c\u3042\u308b\u304b\u308f\u304b\u308b\u3002 \u306a\u304a\u3001\u4eca\u56deCost function\u306f\u4e8c\u4e57\u8aa4\u5dee\u306a\u306e\u3067\u5e38\u306b\u51f9\u578b\u3002 \u03b8 - \u50be\u304d \u306f\u50be\u304d\u304c\u5927\u304d\u3059\u304e\u3066\u53ce\u675f\u3057\u306a\u3044or\u53ce\u675f\u304c\u9045\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3001\u5b66\u7fd2\u7387x\u50be\u304d\u3068\u3059\u308b\u3002\u5b66\u7fd2\u7387\u304c\u5c0f\u3055\u3059\u304e\u3066\u3082\u53ce\u675f\u304c\u9045\u304f\u306a\u308b\u3002 \u6700\u6025\u964d\u4e0b\u6cd5\u306e\u300c\u6700\u6025\u300d\u3068\u306f\u3001\u65b9\u5411\u304c\u30e1\u30a4\u30f3\u3067\u3042\u3063\u3066\u3001\u5927\u304d\u3055\u306f\u3055\u307b\u3069\u95a2\u4fc2\u306a\u3044 J(\u03b81,\u03b8\u2026","title":"Gradient Descent ","provider_url":"https://hatena.blog","blog_title":"\u96d1\u8a18","height":"190","image_url":null,"url":"https://ytrewq.hatenablog.com/entry/2017/07/22/190329","author_url":"https://blog.hatena.ne.jp/namaza/","categories":["\u6a5f\u68b0\u5b66\u7fd2"],"version":"1.0","published":"2017-07-22 19:03:29","provider_name":"Hatena Blog","width":"100%","blog_url":"https://ytrewq.hatenablog.com/","author_name":"namaza","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fytrewq.hatenablog.com%2Fentry%2F2017%2F07%2F22%2F190329\" title=\"Gradient Descent  - \u96d1\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}