A System of Electronic Dictionaries of Portuguese

Abstract

PresentationDIGRAMA is a system of electronic dictionaries and grammars of Portuguese, i.e. lexical and grammatical data bases specifically build to be used by com puters in natural language processing.The dictionary modules contain the words and the formal description of their morphological properties. The grammars correspond to the matrices of the lexicon-grammar of Portuguese, where free and frozen constructions of verbs, adjectives, predicative nouns and adverbs are described and formalized (see References).In this paper we refer to two dictionary modules: a dictionary of simple words and a dictionary of inflected forms. These dictionaries allow: (i) to recognize a given word form both canonical and inflected; (ii) to include a given form into the grammatical class(es) it belongs to; (iii) to show the inflected forms associated to a word; (iv) to dress partial and total lists of both canonical and inflected dictionary entries; (v) to search and list dictionary entries for grammatical categories; (vi) to dress total and partial lists in reverse order.At first we present some general characteristics of DIGRAMA, in particular those involved in dictionary building. Next we describe briefly the morphologi cal behaviour of the major grammatical classes of Portuguese. Afterwards, we present the solutions we have found to code the linguistic information associated to simple words. Finally, we illustrate how the system generates the inflected forms from canonical entries.

Early Experiments on Automatic Annotation of Portuguese Medieval Texts

“…adjective, adverb, conjunction, determiner, interjection, noun, preposition, pronoun or verb) and, if applicable, an inflection code indicating the morphological categories relevant to that category (i.e., tense-mood and person-number, for verbs; gender and number for nouns; etc.). We adopt a highly granular tagset, adapting one already developed for Modern Portuguese and presented in [4,14,15]. The formalism here used is generically the same that was originally developed by [7].…”

“…This paper is part of a larger project that aims to use NLP methods on the investigation of Old Portuguese, particularly on the texts that make up the Corpus de Textos Antigos 'Old Texts Corpus' (CTA) 4 , a project started in 2015 by the Center of Linguistics of the University of Lisbon (CLUL) 5 . As a repository of transcribed and edited texts in Old Portuguese, dated up to 1525, this corpus can be a helpful resource to researchers interested in the older stages of the language.…”

Utilizando um dicionário morfológico para expandir a cobertura lexical de uma gramática do português no formalismo HPSG

“…Abrange as formas flexionadas de substantivos, adjetivos e verbos, que são as classes gramaticais mais numerosas do português. Foi criado a partir da combinac ¸ão, revisão e expansão dos dicionários eletrônicos Label-Lex [Eleutério et al 1995] e DELAF-PB [Muniz 2004]. Incorpora, também, os neologismos gerados por [Silva 2019] por meio da aplicac ¸ão de regras produtivas de formac ¸ão de palavras.…”

Multiword lexical acquisition and dictionary formalization

“…Anticipating that growing interest, over the last years, a significant part of LabEL's research has been devoted to the development of large-scale, linguistically precise language resources, namely to the construction of computational lexicons for simple and multiword units (Eleutério et al, 1995;Ranchhod et al, 1999;Ranchhod et al, 2004).…”