multiple r squared adjusted r squared http://web.maths.unsw.edu.au/~adelle/Garvan/Assays/GoodnessOfFit.html Goodness-of-Fit Statistics Sum of Squares Due to Error This statistic measures the total deviation of the response values from the fit to the
一.R语言的mlr packages install.packages("mlr")之后就可以看到R里面有哪些机器学习算法.在哪个包里面. a<-listLearners() 这个包是听CDA网络课程<R语言与机器学习实战>余文华老师所述,感觉很棒,有待以后深入探讨.以下表格是R语言里面,52个机器学习算法的来源以及一些数据要求. class name short.name package note type installed numerics factors or
本文作者:任坤,厦门大学王亚南经济研究院金融硕士生,研究兴趣为计算统计和金融量化交易,pipeR,learnR,rlist等项目的作者. 近年来,非关系型数据逐渐获得了更广泛的关注和使用.下面分别列举了一个典型的关系型数据表和一个典型的非关系型数据集. 关系型数据:一组学生的基本数据,包括姓名(Name).性别(Gender).年龄(Age)以及专业(Major). NAME GENDER AGE MAJOR Ken Male 24 Finance Ashley Female 25 Statis
Functionals “To become significantly more reliable, code must become more transparent. In particular, nested conditions and loops must be viewed with great suspicion. Complicated control flows confuse programmers. Messy code often hides bugs.” — Bjar
R数据科学(R for Data Science) Part 3:编程 转换--可视化--模型 --------------第13章 使用magrittr进行管道操作-------------------- library(tidyverse) #管道不能支持以下函数: #①使用当前环境的函数:如assign/get/load assign("x",10) x "x" %>% assign(100) # 这里的赋值是由%>% 建立的临时环境进行的 env
Machine Learning for Developers Most developers these days have heard of machine learning, but when trying to find an 'easy' way into this technique, most people find themselves getting scared off by the abstractness of the concept of Machine Learnin