网络社交平台中社群标签动态生成研究 <sup>*</sup>

网络社交平台中社群标签动态生成研究 ^*

蒋武轩,熊回香,叶佳鑫,安宁

Creating Dynamic Tags for Social Networking Groups

Wuxuan Jiang,Huixiang Xiong,Jiaxin Ye,Ning An

表6 w₁主题困惑度值

主题数	$-\left\{ \sum\limits_{K}{P}({{Z}_{K}})\sum\nolimits_{i=1}^{{{N}_{K}}}{\mathrm{log}P({{W}_{i}}\text{ }\!\!\|\!\!\text{ }{{Z}_{K}})} \right\}\text{/}N$	主题困惑度	主题数	$-\left\{ \underset{K}{\mathop \sum }\,P({{Z}_{K}})\sum\nolimits_{i=1}^{{{N}_{K}}}{\mathrm{log}P({{W}_{i}}\text{ }\!\!\|\!\!\text{ }{{Z}_{K}})} \right\}\text{/}N$	主题困惑度
1	0.018396830	1.018567094	11	0.015326789	1.015444847
2	0.017716041	1.017873901	12	0.015465664	1.015585876
3	0.017102683	1.017249771	13	0.015168573	1.015284200
4	0.016967775	1.017112545	14	0.015100700	1.015215292
5	0.016421836	1.016557415	15	0.015071742	1.015185894
6	0.016135249	1.016266125	16	0.014855438	1.014966328
7	0.015785420	1.015910668	17	0.015044306	1.015158041
8	0.016071002	1.016200835	18	0.014927471	1.015039442
9	0.015731518	1.015855909	19	0.014662723	1.014770748
10	0.015669250	1.015792656	20	0.018396830	1.018567094