arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1205.2648cs.SIcs.LGphysics.soc-phstat.ML
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学习连续时间社会网络动态

Learning Continuous-Time Social Network Dynamics

University of California, Riverside(加州大学河滨分校)

Yu Fan, Christian R. Shelton

摘要:

我们证明了一些社会网络动态的社会学模型可以被视为连续时间贝叶斯网络(CTBN)。基于抽样的近似推理方法的CTBN可以被用来作为一个期望最大化的过程,实现更好的精度估计模型的参数比标准的矩量算法从社会学文献的基础。我们扩展了现有的社会网络模型,允许间接和异步的链接观察。一个马尔可夫链蒙特卡罗抽样算法,这个新的模型允许估计和推理。我们提供了合成网络(用于验证)和真实社交网络数据的结果。

英文摘要:

We demonstrate that a number of sociology models for social network dynamics can be viewed as continuous time Bayesian networks (CTBNs). A sampling-based approximate inference method for CTBNs can be used as the basis of an expectation-maximization procedure that achieves better accuracy in estimating the parameters of the model than the standard method of moments algorithmfromthe sociology literature. We extend the existing social network models to allow for indirect and asynchronous observations of the links. A Markov chain Monte Carlo sampling algorithm for this new model permits estimation and inference. We provide results on both a synthetic network (for verification) and real social network data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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