Big Data Analysis and Mining Lecture 2: Getting to Know your Data Weixiong Rao饶卫雄 Tongji University同济大学软件学院 2015 Fall wxrao@tongji.edu.cn 2021/2/9 同济大学软件学院 ool of Software Engineering. Tongpi Unversity2021/2/9 1 Big Data Analysis and Mining Lecture 2: Getting to Know Your Data Weixiong Rao 饶卫雄 Tongji University 同济大学软件学院 2015 Fall wxrao@tongji.edu.cn