Wordnet.Br: An Exercise of Human Language Technology Research

This paper reports the ongoing project (since 2002) of developing a wordnet for Brazilian Portuguese (Wordnet.Br) from scratch. In particular, it describes the process of constructing the Wordnet.Br core database, which has 44,000 words organized in 18,500 synsets Accordingly, it briefly sketches the project overall methodology, its lexical resourses, the synset compilation process, and the Wordnet.Br editor, a GUI (graphical user interface) which aids the linguist in the compilation and maintenance of the Wordnet.Br. It concludes with the planned further work.

Methods and tools for encoding the WordNet.Br sentences, concept glosses, and conceptual-semantic relations

This paper presents the overall methodology that has been used to encode both the Brazilian Portuguese WordNet (WordNet.Br) standard language-independent conceptual-semantic relations (hyponymy, co-hyponymy, meronymy, cause, and entailment) and the so-called cross-lingual conceptual-semantic relations between different wordnets. Accordingly, after contextualizing the project and outlining the current lexical database structure and statistics, it describes the WordNet.Br editing GUI that was designed to aid the linguist in carrying out the tasks of building synsets, selecting sample sentences from corpora, writing synset concept glosses, and encoding both language-independent conceptual-semantic relations and cross-lingual conceptual-semantic relations between WordNet.Br and Princeton WordNet © Springer-Verlag Berlin Heidelberg 2006.

Descrição léxico-gramatical e funcional dos verbos pronominais do português brasileiro com vistas ao aperfeiçoamento da base de verbos da wordnet brasileira e do alinhamento semântico desta à base de verbos da wordnet norte-americana

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

The Automatic Mapping of Princeton WordNet Lexical-Conceptual Relations onto the Brazilian Portuguese WordNet Database

Princeton WordNet (WN.Pr) lexical database has motivated efficient compilations of bulky relational lexicons since its inception in the 1980's. The EuroWordNet project, the first multilingual initiative built upon WN.Pr, opened up ways of building individual wordnets, and interrelating them by means of the so-called Inter-Lingual-Index, an unstructured list of the WN.Pr synsets. Other important initiative, relying on a slightly different method of building multilingual wordnets, is the MultiWordNet project, where the key strategy is building language specific wordnets keeping as much as possible of the semantic relations available in the WN.Pr. This paper, in particular, stresses that the additional advantage of using WN.Pr lexical database as a resource for building wordnets for other languages is to explore possibilities of implementing an automatic procedure to map the WN.Pr conceptual relations as hyponymy, co-hyponymy, troponymy, meronymy, cause, and entailment onto the lexical database of the wordnet under construction, a viable possibility, for those are language-independent relations that hold between lexicalized concepts, not between lexical units. Accordingly, combining methods from both initiatives, this paper presents the ongoing implementation of the WN.Br lexical database and the aforementioned automation procedure illustrated with a sample of the automatic encoding of the hyponymy and co-hyponymy relations.

Brazilian portuguese wordNet: a computational linguistic exercise of encoding bilingual relational lexicons

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Reusability of dictionaries in the compilation of NLP lexicons

This paper discusses particular linguistic challenges in the task of reusing published dictionaries, conceived as structured sources of lexical information, in the compilation process of a machine-tractable thesaurus-like lexical database for Brazilian Portuguese. After delimiting the scope of the polysemous term thesaurus, the paper focuses on the improvement of the resulting object by a small team, in a form compatible with and inspired by WordNet guidelines, comments on the dictionary entries, addresses selected problems found in the process of extracting the relevant lexical information form the selected dictionaries, and provides some strategies to overcome them.

Computational linguistic systematization of a lexicon from the ibitinga embroidery industry conceptual domain

This work discusses a proposition for organizing the lexical items from the conceptual domain labeled THE EMBROIDERY INDUSTRY OF IBITINGA in terms of a natural ontology. It also aims to establish the alignment between this ontology and the bases WordNet.Pr and WordNet.Br. © 2009 IEEE.

Os synsets de verbos do português com o SE inerente e os seus equivalentes do inglês

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Propriedades semânticas e alternâncias sintáticas do verbo: um exercício exploratório de delimitação do significado

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A metáfora e a sua representação em sistemas de processamento automático de línguas naturais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Polyset: modelo linguístico-computacional para a estruturação de redes de polissemia de nominais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Delimitação e alinhamento de conceitos lexicalizados no inglês norte-americano e no português brasileiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Aspectos sintaticamente relevantes do significado lexical: estudo dos verbos de movimento

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A construção de um Thesaurus eletrônico para o português do Brasil

Este trabalho discute o equacionamento lingüístico da construção de um Thesaurus Eletrônico para o Português do Brasil. Na introdução, contextualizamos esse equacionamento no domínio da pesquisa em processamento automático de línguas naturais. Na seqüência, apresentamos, na seção 2, a representação lingüístico-computacional da sinonímia e da antonímia e exemplificamos o processo de compilação dessas relações de sentido em dicionários do português do Brasil. Na seção 3, justificamos a seleção dos dicionários enquanto o corpus de referência e propomos uma tipologia dos problemas decorrentes da escolha desse tipo de corpus para a montagem do thesaurus. Na seção 4, complementamos a discussão com a descrição das principais caracteristicas.de uma ferramenta computacional de autoria, projetada para agilizar o processo de montagem da base de dados lexicais do thesaurus, o Editor do Thesaurus. Por fim, pontuamos as estatísticas atuais do thesaurus e futuros desdobramentos.