dummyVars函数:dummyVars creates a full set of dummy variables (i.e. less than full rank parameterization----建立一套完整的虚拟变量 先举一个简单的例子: survey<-data.frame(service=c("very unhappy","unhappy","neutral","happy","very
转载--https://www.analyticsvidhya.com/blog/2017/03/create-packages-r-cran-github/ 什么是 R 包?我开始创建 R 包的原因是?创建包的好处和挑战必要条件开始创建你的第一个包发布包向CRAN 做贡献后的体验附加提示Additional resources 1. 什么是 R 包? R 包就是一个可重复使用的 R 函数,附带有关如何使用的标准.简要说明文档.有时,包还附带简单的数据. 直至今日,CRAN 上有 10000多个
Introduction to Random forest(Simplified) With increase in computational power, we can now choose algorithms which perform very intensive calculations. One such algorithm is “Random Forest”, which we will discuss in this article. While the algorithm