社会网络分析中通用的贪心算法，包含IC模型，LT模型,WC模型，对比试验中经常用到以及后续改善比较常用的贪心算法框架。-Gm s greedy algorithm in the social network analysis, including IC model, LT model, WC model, is often used in the experiment and further improve the greedy algorithm fr a mework which are f