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.
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