1. https://www.r-bloggers.com/
2. https://www.kaggle.com/datasets
3. RStudio download: https://www.rstudio.com/products/rstudio/download/#download
4. R download: https://mirrors.tongji.edu.cn/CRAN/
5. Dataset: 加州大学欧文分校的机器学习资料库 http://archive.ics.uci.edu/ml/index.php
*的数据网站： https://www.data.gov/
机器学习挑战赛的网站Kaggle: https://www.kaggle.com/
San Francisco Data: https://datasf.org/opendata/