{"provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftsubosaka.hatenadiary.org%2Fentry%2F20100514%2F1273843894\" title=\" Power Iteration Clustering - tsubosaka\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"tsubosaka","height":"190","title":" Power Iteration Clustering","categories":["\u6a5f\u68b0\u5b66\u7fd2"],"provider_url":"https://hatena.blog","url":"https://tsubosaka.hatenadiary.org/entry/20100514/1273843894","published":"2010-05-14 22:31:34","version":"1.0","author_url":"https://blog.hatena.ne.jp/tsubosaka/","blog_title":"tsubosaka\u306e\u65e5\u8a18","description":"\u5ca1\u91ce\u539f\u3055\u3093\u306etweet\u3067\u7d39\u4ecb\u3055\u308c\u3066\u3044\u305fPower Iteration Clustering\u3068\u3044\u3046\u6587\u7ae0\u5206\u985e\u306e\u624b\u6cd5\u306b\u95a2\u3059\u308b\u8ad6\u6587[1,2]\u3092\u8aad\u3093\u3067\u307f\u305f\u3002 \u80cc\u666f n\u500b\u306e\u30c7\u30fc\u30bfX={x_1,...,x_n}\u304c\u4e0e\u3048\u3089\u308c\u305f\u3068\u304d\u306b\u5404\u30c7\u30fc\u30bf\u9593\u306e\u985e\u4f3c\u5ea6s(x_i,x_j)\u3092\u6210\u5206\u306b\u6301\u3064\u985e\u4f3c\u5ea6\u884c\u5217A\u3092\u8003\u3048\u308b\u3002 \u307e\u305f\u6b21\u6570\u884c\u5217\u3068\u3057\u3066A\u306ei\u884c\u76ee\u306e\u5024\u3092\u5408\u8a08\u3057\u305fd_{ii} = \\sum_j A_{ij}\u3092\u5bfe\u89d2\u6210\u5206\u306b\u3082\u3064\u5bfe\u89d2\u884c\u5217\u3092D\u3068\u3059\u308b\u3002 \u3053\u306e\u3068\u304dW:=D^{-1} A\u3092normalized affinity matrix\u3068\u5b9a\u7fa9\u3059\u308b\u3002\u7c21\u5358\u306e\u305f\u3081W\u306f\u30d5\u30eb\u30e9\u30f3\u30af\u3067\u3042\u308b\u3068\u3059\u308b\u3002\u3053\u306e\u884c\u5217\u306f\u3059\u3079\u3066\u306e\u8981\u7d20\u304c1\u3068\u306a\u308b\u56fa\u6709\u30d9\u30af\u30c8\u30eb\u3092\u3082\u3061\u3001\u3053\u2026","blog_url":"https://tsubosaka.hatenadiary.org/","type":"rich","width":"100%","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/t/tsubosaka/20100514/20100514205939.jpg"}