Showing papers by "Nicola Guarino published in 1992"
01 Jul 1992
TL;DR: In this paper, the ontological foundations of the role/concept relationship are explored, and its implications on the practice of knowledge engineering are analyzed, and a formal semantics which binds these concepts to their corresponding relations is proposed.
Abstract: There is a subtle risk of ambiguity in the choice between concepts and roles forced by current KL-ONE-like languages, since many roles may be concepts as well. In this paper we explore the ontological foundations of the role/concept relationship, and analyze its implications on the practice of knowledge engineering. We criticize the current interpretation of KL-ONE roles as arbitrary relations, which vanishes their original meaning and makes them identical to slots. We suggest to call attributes those concepts which actually act as conceptual components, and propose a formal semantics which binds these concepts to their corresponding relations.
215 citations
31 Mar 1992
TL;DR: This paper considers a sublanguage currently used for official publication of business activities which is characterized by a telegraphic style typical of commercial ads, and considers the parsing approach described in the paper, which limits the syntactic analysis to the elementary relationships occurring among these elements.
Abstract: Sublanguages represent an important application area for NLU (Grishman and Kittredge,1986) Their syntactic simplicity and reduced semantic variability provide clear computational advantages In the present paper we consider a sublanguage currently used for official publication of business activities which is characterized by a telegraphic style typical of commercial ads Morphological and syntactic ill-formedness is very frequent within this sublanguage, hence a robust parser is a must The corpus we have considered was extracted from the on-line archives of the Italian Chambers of Commerce, and contains about 4 million descriptions of economic activities They represent an important source of information about the structure of the Italian economy Since our main goal is intelligent information retrieval, only a part of the information contained in the sentences is considered relevant Basically, the kind of information we are interested in involves nouns, preposi t ions and noun modifiers, and involves verbs only in their nominalized or infinitive form The peculiarity of the parsing approach described in the paper consists in the fact that we limit the syntactic analysis to the elementary relationships occurring among these elements, discarding whatever is not recognized by the morphological analyzer and giving up the attempt to reconstruct the syntactic tree of the whole sentence