文章基本信息

标题：Semantic Textual Similarity Methods, Tools, and Applications: A Survey
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作者：Goutam Majumder ; Partha Pakray ; Alexander Gelbukh 等
期刊名称：Computación y Sistemas
印刷版ISSN：1405-5546
出版年度：2016
卷号：20
期号：4
页码：647-665
语种：English
出版社：Instituto Politécnico Nacional
其他摘要：Measuring Semantic Textual Similarity (STS), between words/ terms, sentences, paragraph and doc- ument plays an important role in computer science and computational linguistic. It also has many applications over several fields such as Biomedical Informatics and Geoinformation. In this paper, we present a survey on different methods of textual similarity and we also reported about the availability of different software and tools those are useful for STS. In natural language processing (NLP), STS is a important component for many tasks such as document summarization, word sense disambiguation, short answer grading, information retrieval and extraction. We split out the measures for semantic similarity into three broad categories such as (i) Topological/Knowledge-based (ii) Statistical/ Corpus Based (iii) String based. More emphasis is given to the methods related to the WordNet taxonomy. Because topological methods, plays an important role to understand intended meaning of an ambiguous word, which is very difficult to process computationally. We also propose a new method for measuring semantic similarity between sentences. This proposed method, uses the advantages of taxonomy methods and merge these information to a language model. It considers the WordNet synsets for lexical relationships between nodes/words and a uni-gram language model is implemented over a large corpus to assign the information content value between the two nodes of different classes.
其他关键词：WordNet taxonomy; natural language pro- cessing; semantic textual similarity; information content; random walk; statistical similarity; cosine similarity; term-based similarity; character-based similarity; n-gram; Jaccard similarity; WordNet similarity