面向语料的领域主题词表构建算法

Construction Method of Domain Subject Thesaurus Based on Corpus

针对大规模领域主题词表提取的问题,提出根据给定语料中词共现特征构建词共现特征矩阵的方法。在此基础上进行词簇划分,进而计算出每个词簇的中心词,并以中心词为核心重新组织每个词簇,最终实现面向语料的主题词表的自动构建。实验结果表明,该算法具有较高的准确率和召回率。

To achieve a massive domain corpus oriented subject thesaurus,a method based on feature matrix which is set up by computing words co-occurrence was proposed.By operating on this feature matrix,words are divided into clusters,and central word for each words cluster is calculated.Lexical bundles are finally gained by re-organizing words clusters using central word as a core.The experiment indicates that the proposed method can achieve good precision rate and recall rate.