基于CART决策树的网络问答社区新兴话题识别研究*

程秀峰, 张心怡, 王宁

Identifying Trending Topics in Q&A Community with CART Decision Tree

Cheng Xiufeng,Zhang Xinyi,Wang Ning

表3 预处理的T2问题数据

Title Focus Cohesion Impact Is Order Tree1.Topic16 109 452 15.91 109 622 0 137 Tree1.Topic17 95 0 0 0 139 Tree1.Topic18 648 7.18 457 0 145 Tree1.Topic19 5 068 3.49 111 0 149 Tree1.Topic20 950 3.27 11 670 0 153 Tree1.Topic21 801 1.53 46 0 159 Tree1.Topic22 1 472 1.97 44 0 163 Tree1.Topic23 791 2.37 586 0 164 Tree1.Topic24 426 1.83 12 650 0 173 Tree1.Topic25 281 1.85 68 0 180 Tree1.Topic26 871 3.39 5 181 0 203 Tree1.Topic27 1 196 2.11 144 588 0 207 Tree1.Topic28 576 3.13 9 949 0 209 Tree1.Topic29 408 1.95 16 350 0 213 Tree1.Topic30 463 2.46 465 0 234