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library(ROCR)a=read.table("toy.txt")a <- as.matrix(a)pred <- prediction(a[,1], a[,2])perf <- performance(pred,"tpr","fpr")auc.tmp <- performance(pred,"auc")auc <- as.numeric(auc.tmp@y.values)auc <- round(auc, 4)plot(perf,colorize=TRUE,lwd=5,xlab="FPR"... 阅3218 转3 评0 公众公开 15-03-26 20:53 |
负号± plus or minus 正负号× is multiplied by 乘号÷ is divided by 除号＝ is equal to 等于号≠ is not equal to 不等于号≡ is equivalent to 全等于号≌ is equal to or approximately equal to 等于或约等于号≈ is approximately equal to 约等于号＜ is less than 小于号＞ is more than 大于号≮ is not less than 不... 阅116 转0 评0 公众公开 14-12-22 21:00 |
负号± plus or minus 正负号× is multiplied by 乘号÷ is divided by 除号＝ is equal to 等于号≠ is not equal to 不等于号≡ is equivalent to 全等于号≌ is equal to or approximately equal to 等于或约等于号≈ is approximately equal to 约等于号＜ is less than 小于号＞ is more than 大于号≮ is not less than 不... 阅78 转0 评0 公众公开 14-12-19 11:32 |
广义线性模型（GLM） | Public Library of Bioinformatics.广义线性模型（generalized linear model, GLM)是简单最小二乘回归（OLS)的扩展，在OLS的假设中，响应变量是连续数值数据且服从正态分布，而且响应变量期望值与预测变量之间的关系是线性关系。其次响应变量期望值的函数（连接函数）与预测变量之间的关系为线性关系。- glm(affairs ~ a... 阅22137 转90 评0 公众公开 14-08-29 16:22 |
在一段时间 t（比如 1 个小时）内来到食堂就餐的学生数量肯定不会是一个常数（比如一直是 200人），而应该符合某种随机规律：比如在 1 个小时内来 200 个学生的概率是 10%，来 180 个学生的概率是20%……虽然我们不能在牛仔射击前准确地预测出具体的得分 k，但可以求出 k 的概率分布，比如 k = 9 的概率是50%，k = 8 分的概率是 30%……这样一... 阅5232 转5 评0 公众公开 14-07-08 19:25 |
