GunData Group Content (6H) .2.1 Overview of data types .2.2 Review of Data pre-processing tools and platforms 2.3 Clean,storage and management of raw data 2.4 Collections of data analysis and data mining 4 Copyright 2019 by Xiaoyu Li.Content（6H）  2.1 Overview of data types  2.2 Review of Data pre-processing tools and platforms  2.3 Clean, storage and management of raw data  2.4 Collections of data analysis and data mining Copyright © 2019 by Xiaoyu Li. 4