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Information 2018, 9(2), 34;

A Survey on Portuguese Lexical Knowledge Bases: Contents, Comparison and Combination

Department of Informatics Engineering, Centre for Informatics and Systems of the University of Coimbra (CISUC), University of Coimbra, 3030-290 Coimbra, Portugal
This paper is an extended version of our paper published in Comparing and Combining Portuguese Lexical-Semantic Knowledge Bases, Proceedings of the 6th Symposium on Languages, Applications and Technologies (SLATE 2017), 26–27 June 2017, Vila do Conde, Portugal.
Received: 28 December 2017 / Revised: 25 January 2018 / Accepted: 31 January 2018 / Published: 2 February 2018
(This article belongs to the Special Issue Special Issues on Languages Processing)
Full-Text   |   PDF [270 KB, uploaded 2 February 2018]


In the last decade, several lexical-semantic knowledge bases (LKBs) were developed for Portuguese, by different teams and following different approaches. Most of them are open and freely available for the community. Those LKBs are briefly analysed here, with a focus on size, structure, and overlapping contents. However, we go further and exploit all of the analysed LKBs in the creation of new LKBs, based on the redundant contents. Both original and redundancy-based LKBs are then compared, indirectly, based on the performance of automatic procedures that exploit them for solving four different semantic analysis tasks. In addition to conclusions on the performance of the original LKBs, results show that, instead of selecting a single LKB to use, it is generally worth combining the contents of all the open Portuguese LKBs, towards better results. View Full-Text
Keywords: lexical knowledge bases; Portuguese; WordNet; redundancy; semantic similarity lexical knowledge bases; Portuguese; WordNet; redundancy; semantic similarity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Gonçalo Oliveira, H. A Survey on Portuguese Lexical Knowledge Bases: Contents, Comparison and Combination. Information 2018, 9, 34.

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