The Portuguese B \(^2\) SG: A Semantic Test for Distributional Thesaurus

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• 关键词：Gold standard ; Semantic relations ; Distributional thesauri
• 刊名：Lecture Notes in Computer Science
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：9727
• 期：1
• 页码：333-339
• 全文大小：140 KB
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• 作者单位：Rodrigo Wilkens (18) <br> Leonardo Zilio (18) <br> Eduardo Ferreira (18) <br> Aline Villavicencio (18) <br><br>18. Institute of Informatics, UFRGS, Porto Alegre, Brazil <br>
• 丛书名：Computational Processing of the Portuguese Language
• ISBN：978-3-319-41552-9
• 刊物类别：Computer Science
• 刊物主题：Artificial Intelligence and Robotics<br>Computer Communication Networks<br>Software Engineering<br>Data Encryption<br>Database Management<br>Computation by Abstract Devices<br>Algorithm Analysis and Problem Complexity<br>
• 出版者：Springer Berlin / Heidelberg
• ISSN：1611-3349
• 卷排序：9727

文摘

The lack of availability of gold standards for evaluation of distributional thesauri is a stumbling block that prevents a direct comparison of alternative approaches in a uniform way. Here we present B\(^2\)SG, a TOEFL-like task for Portuguese that contains 2,875 tests with semantic relations (synonyms, antonyms and hypernyms) for nouns and verbs. The resource is validated by comparing it with lexical resources and by human judgment. The resource was used for evaluating two distributional thesauri: one built from lemmata and the other from surface forms. The evaluation of thesauri demonstrated that the use of lemmata is slightly more accurate than the use surface forms for building distributional thesauri. B\(^2\)SG is readily available for download (http://​www.​inf.​ufrgs.​br/​pln/​resource/​B2SG.​zip).