{"image_url":null,"description":"\u300c\u30d9\u30eb\u30cc\u30fc\u30a4\u5206\u5e03\u306e\u30d1\u30e9\u30e1\u30fc\u30bf x \u304c\u4e0e\u3048\u3089\u308c\u305f\u3068\u304d\u306b\uff0c\u88cf\u304c\u51fa\u308b\u78ba\u7387 1-x \u3092\u8a08\u7b97\u3057\u305f\u3044\u300d\u300c1-x \u3067\u306f\u306a\u304f log(1-x) \u304c\u307b\u3057\u3044\u300d\u300cx \u3067\u306f\u306a\u304f log x \u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u308b\u300d\u3068\u3044\u3046\u72b6\u6cc1\u3067\uff0c\u30bf\u30a4\u30c8\u30eb\u306e\u3088\u3046\u306b log(1-exp(x)) \u3092\u8a08\u7b97\u3057\u305f\u3044\u72b6\u6cc1\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u6a5f\u68b0\u5b66\u7fd2\u3067\u306f\u4f55\u304b\u306e\u5024\u306e\u5bfe\u6570\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u304c\uff0c\u3044\u304f\u3064\u304b\u306e\u8a08\u7b97\u306b\u3064\u3044\u3066\u306f\u6570\u5024\u8a08\u7b97\u7684\u306b\u5b89\u5b9a\u306a\u65b9\u6cd5\u304c\u63d0\u6848\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6709\u540d\u306a\u306e\u306f log \u03a3_i exp(x_i) \u3092\u8a08\u7b97\u3059\u308b logsumexp \u3067\u3059\u3002\u305d\u306e\u307e\u307e exp(x_i) \u3092\u8a08\u7b97\u3059\u308b\u3068\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\uff0c\u6700\u7d42\u7684\u306b\u306f\u5bfe\u6570\u3092\u3068\u3063\u3066\u3044\u308b\u306e\u3067\u7b54\u3048\u306f\u305d\u2026","type":"rich","height":"190","author_name":"kujira16","categories":[],"url":"https://kujira16.hateblo.jp/entry/2017/09/25/195350","version":"1.0","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/kujira16/","blog_url":"https://kujira16.hateblo.jp/","blog_title":"\u304f\u3058\u3089\u306b\u3063\u304d++","published":"2017-09-25 19:53:50","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkujira16.hateblo.jp%2Fentry%2F2017%2F09%2F25%2F195350\" title=\"log(1-exp(x)) \u3092\u5b89\u5b9a\u306b\u8a08\u7b97\u3059\u308b - \u304f\u3058\u3089\u306b\u3063\u304d++\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","title":"log(1-exp(x)) \u3092\u5b89\u5b9a\u306b\u8a08\u7b97\u3059\u308b","width":"100%"}