论文标题
堆栈交换的可持续性Q \＆一个社区：信任的作用
Sustainability of Stack Exchange Q\&A communities: the role of trust
论文作者
论文摘要
知识共享社区是任何基于知识的社会的基本要素。因此，了解它们的出现，功能和消失是至关重要的。许多社会和经济因素会影响可持续的知识共享社区。在这里，我们探讨了社会互动和社会信任在这些社区的出现中的作用。使用复杂的网络理论中的工具，我们分析了四对Stackexchange社区的社会结构的早期演变，每个社区都对应于同一主题的一个活跃和一个封闭的社区。我们适应动态声誉模型，以量化这些社区中社会信任的演变。我们的分析表明，活跃的社区具有较高的局部凝聚力，并发展出稳定且相互联系的核心。可持续社区的平均声誉更高。在这些社区中，核心成员之间的信任会很早就发展，并且随着时间的流逝仍然很高。我们的结果表明，创建稳定且值得信赖的核心的努力对于建立可持续的知识共享社区可能至关重要。
Knowledge-sharing communities are a fundamental element of any knowledge-based society. Understanding how they emerge, function, and disappear is thus of crucial importance. Many social and economic factors influence sustainable knowledge-sharing communities. Here we explore the role of the structure of social interactions and social trust in the emergence of these communities. Using tools from complex network theory, we analyze the early evolution of social structure in four pairs of StackExchange communities, each corresponding to one active and one closed community on the same topic. We adapt the dynamical reputation model to quantify the evolution of social trust in these communities. Our analysis shows that active communities have higher local cohesiveness and develop stable and more strongly connected cores. The average reputation is higher in sustainable communities. In these communities, the trust between core members develops early and remains high over time. Our results imply that efforts to create a stable and trustworthy core may be crucial for building a sustainable knowledge-sharing community.
