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arXiv 1608.03371cs.SI
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从用户行为中学习情感影响

Learning Sentimental Influences from Users' Behaviors

Shenghua Liu, Houdong Zheng, Huawei Shen, Xiangwen Liao, Xueqi Cheng

摘要:

对不同情感极性的人际影响建模是意见形成和病毒式营销中的一个基本问题。还没有看到用于从用户的行为学习情感影响的有效解决方案。以往的信息传播相关研究直接将每对用户之间的人际影响定义为一个参数,即使这些影响来自或影响同一个用户,这些参数也是相互独立的。影响是从用户的传播行为,即时间级联,而情感与他们无关。因此,我们建议建立模型的潜在影响力和易感性矩阵上定义的个人用户和情感极性的人际影响。这种低维的分布式表示自然地使得与同一用户相关的人际影响相互耦合,从而降低了模型的复杂性。情绪作用于参数矩阵的不同行,描述它们在建模级联中的效果。采用混洗小批量投影随机梯度下降迭代优化算法和Adadelta更新规则,根据感染频率用户的分布重复采样负例,以减少计算成本和优化不平衡。实验在微博数据集上进行。结果表明,我们的模型比最先进的模型和成对模型取得了更好的性能。此外,分析学习用户的情感影响和情感倾向的分布也有一些有趣的发现。

英文摘要:

Modeling interpersonal influence on different sentimental polarities is a fundamental problem in opinion formation and viral marketing. There has not been seen an effective solution for learning sentimental influences from users' behaviors yet. Previous related works on information propagation directly define interpersonal influence between each pair of users as a parameter, which is independent from each others, even if the influences come from or affect the same user. And influences are learned from user's propagation behaviors, namely temporal cascades, while sentiments are not associated with them. Thus we propose to model the interpersonal influence by latent influence and susceptibility matrices defined on individual users and sentiment polarities. Such low-dimensional and distributed representations naturally make the interpersonal influences related to the same user coupled with each other, and in turn, reduce the model complexity. Sentiments act on different rows of parameter matrices, depicting their effects in modeling cascades. With the iterative optimization algorithm of projected stochastic gradient descent over shuffled mini-batches and Adadelta update rule, negative cases are repeatedly sampled with the distribution of infection frequencies users, for reducing computation cost and optimization imbalance. Experiments are conducted on Microblog dataset. The results show that our model achieves better performance than the state-of-the-art and pair-wise models. Besides, analyzing the distribution of learned users' sentimental influences and susceptibilities results some interesting discoveries.

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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