{"url":"https://hayataka2049.hatenablog.jp/entry/2018/01/22/151849","title":"\u3010python\u3011python\u3067\u60c5\u5831\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u306e\u8a08\u7b97","provider_name":"Hatena Blog","author_name":"hayataka2049","image_url":"http://chart.apis.google.com/chart?cht=tx&chl=%5Clog_20","categories":["python","scipy"],"blog_url":"https://hayataka2049.hatenablog.jp/","version":"1.0","provider_url":"https://hatena.blog","type":"rich","author_url":"https://blog.hatena.ne.jp/hayataka2049/","description":"\u60c5\u5831\u7406\u8ad6\u3067\u3068\u3066\u3082\u3088\u304f\u51fa\u3066\u304f\u308b\u60c5\u5831\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u3002\u8a08\u7b97\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u826f\u3044\u306e\u3060\u308d\u3046\uff1f \u9078\u629e\u80a21\uff1a\u5b9a\u7fa9\u3069\u304a\u308a\u4f5c\u308b \u5b9a\u7fa9\u306f\u3068\u3066\u3082\u7c21\u5358\u3067\u3059\u3002\u6ce8\u610f\u3059\u308b\u3079\u304d\u3053\u3068\u306f\u3001\u5165\u529b\u306b0\u304c\u6765\u305f\u3068\u304d\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u60f3\u5b9a\u3057\u306a\u3044\u3067\u4f5c\u308b\u3068math domain error\u304c\u51fa\u308b\uff08\u306f\u5b9a\u7fa9\u3067\u304d\u306a\u3044\u304b\u3089\u306d\u30fb\u30fb\u30fb\uff09\u3002 from math import log2 def H(lst): return -sum([x*log2(x) if x != 0 else 0 for x in lst]) print(H([0.5, 0.5])) # 1.0 \u9078\u629e\u80a22\uff1ascipy\u3092\u4f7f\u3046 scipy\u306b\u305d\u306e\u3082\u306e\u305a\u3070\u308a\u306eentropy\u3068\u3044\u3046\u95a2\u6570\u304c\u3042\u308b\u3002sci\u2026","blog_title":"\u9759\u304b\u306a\u308b\u540d\u8f9e","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhayataka2049.hatenablog.jp%2Fentry%2F2018%2F01%2F22%2F151849\" title=\"\u3010python\u3011python\u3067\u60c5\u5831\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc\u306e\u8a08\u7b97 - \u9759\u304b\u306a\u308b\u540d\u8f9e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","published":"2018-01-22 15:18:49"}