Community Question Answering （CQA） websites have greatly facilitated users＇ lives, with an increasing number of people seeking help and exchanging ideas on the Internet. This newlymerged community features two char...Community Question Answering （CQA） websites have greatly facilitated users＇ lives, with an increasing number of people seeking help and exchanging ideas on the Internet. This newlymerged community features two characteristics： social relations and an ask-reply mechanism. As users＇ behaviours and social statuses play a more important role in CQA services than traditional answer retrieving websites, researchers＇ concerns have shifted from the need to passively find existing answers to actively seeking potential reply providers that may give answers in the near future. We analyse datasets derived from an online CQA system named ＂Quora＂, and observed that compared with traditional question answering services, users tend to contribute replies rather than questions for help in the CQA system. Inspired by the findings, we seek ways to evaluate the users＇ ability to offer prompt and reliable help, taking into account activity, authority and social reputation char- acteristics. We propose a hybrid method that is based on a Question-User network and social network using optimised PageRank algorithm. Experimental results show the efficiency of the proposed method for ranking potential answer-providers.展开更多
本文结合互动问答平台探寻社会资本和主观规范对于用户贡献意愿的影响。首先,在已有研究的基础上,从社会资本理论和主观规范的视角出发,构建影响用户贡献意愿的结构模型;然后,通过问卷方式在线搜集数据,利用偏最小二乘(Partial Least Sq...本文结合互动问答平台探寻社会资本和主观规范对于用户贡献意愿的影响。首先,在已有研究的基础上,从社会资本理论和主观规范的视角出发,构建影响用户贡献意愿的结构模型;然后,通过问卷方式在线搜集数据,利用偏最小二乘(Partial Least Squares,PLS)结构方程建模(Structural Equation Modeling,SEM)对数据进行分析,发现互惠作为社会资本是影响用户贡献意愿的最大关键因子;最后,结合模型和研究发现展开了分析和讨论。展开更多
基金supported by the Fundamental Research Funds for the Central Universitiesthe National Natural Science Foundation of China under Grant No.61271041+2 种基金the National Basic Research Program of China (973 Program) under Grant No.2009CB320504the iCore Integrated Project under Grant No.287708the National Scienceand Technology Major Project under Grants No.2012ZX03005008-001,No.2012ZX03002008
文摘Community Question Answering （CQA） websites have greatly facilitated users＇ lives, with an increasing number of people seeking help and exchanging ideas on the Internet. This newlymerged community features two characteristics： social relations and an ask-reply mechanism. As users＇ behaviours and social statuses play a more important role in CQA services than traditional answer retrieving websites, researchers＇ concerns have shifted from the need to passively find existing answers to actively seeking potential reply providers that may give answers in the near future. We analyse datasets derived from an online CQA system named ＂Quora＂, and observed that compared with traditional question answering services, users tend to contribute replies rather than questions for help in the CQA system. Inspired by the findings, we seek ways to evaluate the users＇ ability to offer prompt and reliable help, taking into account activity, authority and social reputation char- acteristics. We propose a hybrid method that is based on a Question-User network and social network using optimised PageRank algorithm. Experimental results show the efficiency of the proposed method for ranking potential answer-providers.
文摘本文结合互动问答平台探寻社会资本和主观规范对于用户贡献意愿的影响。首先,在已有研究的基础上,从社会资本理论和主观规范的视角出发,构建影响用户贡献意愿的结构模型;然后,通过问卷方式在线搜集数据,利用偏最小二乘(Partial Least Squares,PLS)结构方程建模(Structural Equation Modeling,SEM)对数据进行分析,发现互惠作为社会资本是影响用户贡献意愿的最大关键因子;最后,结合模型和研究发现展开了分析和讨论。
