arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.09513cs.CL
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关键词远离局部向量空间中所有词的均值

Keywords lie far from the mean of all words in local vector space

Aristotle University of Thessaloniki(塞萨洛尼基亚里士多德大学)

Eirini Papagiannopoulou, Grigorios Tsoumakas, Apostolos N. Papadopoulos

摘要:

关键词提取是一个重要的文档处理过程,其目的是找到一个小的术语集,简洁地描述文档的主题。最流行的最先进的无监督方法属于基于图的方法家族,该方法构建单词图并使用各种中心性度量来对节点(候选关键字)进行评分。在这项工作中,我们遵循不同的路径来检测的关键字从文本文档建模的主要分布的文档的话,使用本地词向量表示。然后,我们根据候选人在文本中的位置以及相应的局部向量与主分布中心之间的距离对候选人进行排名。我们通过一项扩展的实验研究,调查本地表示的属性,与强基线和最先进的无监督关键字提取方法相比,我们的方法具有高性能。

英文摘要:

Keyword extraction is an important document process that aims at finding a small set of terms that concisely describe a document's topics. The most popular state-of-the-art unsupervised approaches belong to the family of the graph-based methods that build a graph-of-words and use various centrality measures to score the nodes (candidate keywords). In this work, we follow a different path to detect the keywords from a text document by modeling the main distribution of the document's words using local word vector representations. Then, we rank the candidates based on their position in the text and the distance between the corresponding local vectors and the main distribution's center. We confirm the high performance of our approach compared to strong baselines and state-of-the-art unsupervised keyword extraction methods, through an extended experimental study, investigating the properties of the local representations.

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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