在线问答学习社区用户综合影响力与知识传播机理研究  

Research on the Comprehensive Influence of Users in Online Q&A Learning Community and the Mechanism of Knowledge Dissemination

作　　者：陶金虎 董伟 Tao Jinhu;Dong Wei(Institute of Education,Tsinghua University,Beijing 100084;School of Education,Tianjin University,Tianjin 300350)

机构地区：[1]清华大学教育研究院,北京100084 [2]天津大学教育学院,天津300350

出　　处：《情报探索》2024年第11期10-16,共7页Information Research

基　　金：国家社科基金一般项目“基于多模态的公众健康信息趋避行为形成机制及引导策略研究”(项目编号:23BTQ069)的研究成果之一。

摘　　要：[目的/意义]在线问答学习社区高影响力用户的有效挖掘与定位,有利于促进用户知识决策,帮助平台加强用户管理,提升服务水平。[方法/过程]从知识交互网络视角出发,先使用PageRank算法和LSTM模型对用户交互影响力和评论情感倾向进行识别和预测,并融合两者计算出用户综合影响力,再基于不同影响力转变类型,探讨知识传播机理。[结果/结论]用户交互影响力对知识实用价值评价无力,综合影响力能够有效弥补这一缺点;高综合影响力用户对促进知识传播、社区运转具有重要作用。该研究成果有助于降低学习者知识资源决策成本,辅助知识平台定位与推送优质知识生成者,明晰知识传播形态和社区运转机理。[Purpose/significance]The effective mining and positioning of highly influential users in the online Q&A learning community is conducive to promoting user knowledge decision-making and helping the platform strengthen user management and improving service level.[Method/process]From the perspective of knowledge interaction network,this paper first uses the PageRank algorithm and LSTM model to identify and predict the interactive influence of users and the sentiment tendency of comments,and then calculates the comprehensive influence of users by fusing the two.Based on different types of influence transformation,this paper explores the mechanism of knowledge dissemination.[Result/conclusion]It is found that the interactive influence of users is weak in evaluating the practical value of knowledge,and the comprehensive influence can effectively make up for this shortcoming.Users with high comprehensive influence play an important role in promoting knowledge dissemination and community operation.This research achievement helps to reduce learners’knowledge resource decision-making cost,assist knowledge platforms in locating and promoting high-quality knowledge generators,clarify knowledge dissemination forms and community operation mechanisms.

关 键 词：在线问答学习平台 PAGERANK LSTM 综合影响力 知识传播机理 

分 类 号：G20[文化科学—传播学]