Thematic Roles

. In this paper we present an unsupervised learning algorithm for incremental concept formation, based on an augmented version of COBWEB. The algorithm is applied to the task of acquiring …...

Semantic feedback is an important source of informa- tion that a parser could use to deal with local ambigu- ities in syntax. However, it is difficult to devise a sys- …...

We propose a formal characterization of variation in the syntactic realization of semantic arguments, using hierarchies of syntactic relations and thematic roles, and a mechanism of lexical inheritance to ob- …...

We present a simple, two-steps supervised strategy for the identification and classifica- tion of thematic roles in natural language texts. We employ no external source of in- formation but automatic …...