Probability

September 7, 2014 4 minute read

总结自 Coursera lecture Statistical Inference section 02 Probability。

Machine Learning: Dimensionality Reduction

September 6, 2014 4 minute read

1. Motivation

Covariance and Correlation

September 6, 2014 1 minute read

0. Symbols

Moment, Expectation, Variance, Skewness and Kurtosis

September 4, 2014 3 minute read

0. Dictionary

R Exploratory Data Analysis: Air Pollution Case Study

August 28, 2014 5 minute read

对 Air Pollution Case Study 的总结。

R: Saving, Loading and Removing in-memory Data

August 12, 2014 less than 1 minute read

Saving R Data

R: Getting and Cleaning Data

August 2, 2014 35 minute read

What are Confounding Factors and How do they Affect Studies?

August 1, 2014 2 minute read

confound 的意思是：

What are the differences among different study designs, and what are the relative advantages of each?

July 31, 2014 11 minute read

摘自 What are the differences among different study designs, and what are the relative advantages of each?。做目录并排版。 1. Two Classic Types of Studies The two ...

An Example of Experimental Design

July 31, 2014 less than 1 minute read

Question: Does changing the text on your website improve donations?