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Query-focused multi-document summarization using hypergraph-based ranking

机译:使用基于超图的排名,以查询为中心的多文档摘要

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摘要

General graph random walk has been successfully applied in multi-document summarization, but it has some limitations to process documents by this way. In this paper, we propose a novel hypergraph based vertex-reinforced random walk framework for multi-document summarization. The framework first exploits the Hierarchical Dirichlet Process (HDP) topic model to learn a word-topic probability distribution in sentences. Then the hypergraph is used to capture both cluster relationship based on the word-topic probability distribution and pairwise similarity among sentences. Finally, a time-variant random walk algorithm for hypergraphs is developed to rank sentences which ensures sentence diversity by vertex-reinforcement in summaries. Experimental results on the public available dataset demonstrate the effectiveness of our framework.
机译:常规图随机游走法已成功地应用于多文档摘要中,但是以这种方式处理文档具有一定的局限性。在本文中,我们提出了一种新颖的基于超图的顶点增强随机游走框架,用于多文档摘要。该框架首先利用Hierarchical Dirichlet Process(HDP)主题模型来学习句子中单词-主题的概率分布。然后,利用超图捕获基于词-主题概率分布和句子之间成对相似性的聚类关系。最后,开发了一种用于超图的时变随机游走算法来对句子进行排名,以通过摘要中的顶点增强来确保句子的多样性。公开数据集上的实验结果证明了我们框架的有效性。

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