Journal
IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING
Volume 23, Issue 3, Pages 461-471Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASLP.2014.2377580
Keywords
Piecewise linear projections; semantic hierarchy; word embedding
Categories
Funding
- National 863 Project [2015AA011808]
- National Natural Science Foundation of China (NSFC) [61133012, 61273321]
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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%.
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