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要求：改写为英文摘要

本研究旨在探索网络虚拟社群中用户间的互动和交流模式对知识共享的影响。研究采用案例分析法，选取了三个不同类型的虚拟社群进行深入研究，通过对群组成员的行为数据进行分析，总结出一些有效的知识共享策略。研究发现，用户间的互动频率与知识共享的效果正相关，且不同类型的社群具有不同的最佳互动模式。此外，有效的知识共享不仅依赖于技术支持，还需要社群成员间良好的互信关系和共同目标的支持。
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This study aims to explore the impact of user interaction and communication patterns within online virtual communities on knowledge sharing. Using a case study approach, the research examines three distinct types of virtual communities, analyzing group member behavior data to identify effective knowledge sharing strategies. The findings indicate a positive correlation between interaction frequency and knowledge sharing effectiveness, with different communities having distinct optimal interaction models. Furthermore, effective knowledge sharing relies not only on technical support but also on strong mutual trust and shared goals among community members.
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