{"version":"1.0","title":"\u4e16\u754c\u3067\u4e00\u756a\u308f\u304b\u308a\u3084\u3059\u3044ROC\u89e3\u6790","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","height":"190","image_url":"https://cdn-ak.d.st-hatena.com/diary/MikuHatsune/2012-12-27.gif","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmikuhatsune.hatenadiary.com%2Fentry%2F20121227%2F1356444080\" title=\"\u4e16\u754c\u3067\u4e00\u756a\u308f\u304b\u308a\u3084\u3059\u3044ROC\u89e3\u6790 - \u9a5a\u7570\u306e\u30a2\u30cb\u30f2\u30bf\u793e\u4f1a\u5fa9\u5e30\u306e\u4e88\u5099\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2012-12-27 23:01:20","type":"rich","blog_title":"\u9a5a\u7570\u306e\u30a2\u30cb\u30f2\u30bf\u793e\u4f1a\u5fa9\u5e30\u306e\u4e88\u5099","width":"100%","author_name":"MikuHatsune","categories":["R","\u7d71\u8a08","R\u3092\u4f7f\u3044\u3053\u306a\u3059"],"description":"\u3044\u3084\u3001\u4e16\u754c\u3067\u4e00\u756a\u308f\u304b\u308a\u3084\u3059\u3044\u304b\u306f\u3069\u3046\u3060\u308d\u3046\u2026 library(pROC) n <- 30000 #\u5224\u5b9a\u3055\u308c\u308b\u3082\u306e\u306e\u6570 a1 <- rnorm(n, mean=0) #\u9670\u6027\u306e\u3082\u306e a2 <- rnorm(n, mean=2, sd=2) #\u967d\u6027\u306e\u3082\u306e diagnosis <- rep(0:1, each=n) #\u5404\u3005\u306e\u5224\u5b9a\u30d5\u30e9\u30b0 roc1 <- roc(diagnosis, c(a1, a2)) sen_spe <- rbind(roc1$sensitivities, roc1$specificities) #\u5404\u3005\u306e\u95be\u5024\u3067\u306e\u611f\u5ea6\u3068\u7279\u7570\u5ea6 ss0 <- which.max(colSums(sen_\u2026","author_url":"https://blog.hatena.ne.jp/MikuHatsune/","url":"https://mikuhatsune.hatenadiary.com/entry/20121227/1356444080","blog_url":"https://mikuhatsune.hatenadiary.com/"}