Title :
Learning Semantic Hierarchies: A Continuous Vector Space Approach
Author :
Ruiji Fu ; Jiang Guo ; Bing Qin ; Wanxiang Che ; Haifeng Wang ; Ting Liu
Author_Institution :
Sch. of Comput. Sci. & Technol., Harbin Inst. of Technol., Harbin, China
Abstract :
Semantic hierarchy construction aims to build structures of concepts linked by hypernym-hyponym (“is-a”) relations. A major challenge for this task is the automatic discovery of such relations. This paper proposes a novel and effective method for the construction of semantic hierarchies based on continuous vector representation of words, named word embeddings, which can be used to measure the semantic relationship between words. We identify whether a candidate word pair has hypernym-hyponym relation by using the word-embedding-based semantic projections between words and their hypernyms. Our result, an F-score of 73.74%, outperforms the state-of-the-art methods on a manually labeled test dataset. Moreover, combining our method with a previous manually built hierarchy extension method can further improve F-score to 80.29%.
Keywords :
natural language processing; semantic networks; vectors; continuous vector space approach; continuous vector word representation; hierarchy extension method; hypernym-hyponym relations; is-a relations; semantic hierarchy construction; semantic word relationship; word-embedding-based semantic projections; Context; Encyclopedias; Semantics; Speech; Speech processing; Training data; Vectors; Piecewise linear projections; semantic hierarchy; word embedding;
Journal_Title :
Audio, Speech, and Language Processing, IEEE/ACM Transactions on
DOI :
10.1109/TASLP.2014.2377580