2026-04-13T04:15:05Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1192722026-01-22T04:03:38Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Morrill, Glyn author Valentín Fernández Gallart, José Oriol author 2018-06 Spurious ambiguity is the phenomenon whereby distinct derivations in grammar may assign the same structural reading, resulting in redundancy in the parse search space and inefficiency in parsing. Understanding the problem depends on identifying the essential mathematical structure of derivations. This is trivial in the case of context free grammar, where the parse structures are ordered trees; in the case of type logical categorial grammar, the parse structures are proof nets. However, with respect to multiplicatives, intrinsic proof nets have not yet been given for displacement calculus, and proof nets for additives, which have applications to polymorphism, are not easy to characterize. In this context we approach here multiplicative-additive spurious ambiguity by means of the proof-theoretic technique of focalization. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Llenguatge natural Computational linguistics Categorial grammar Lingüística computacional Gramàtica categorial Spurious ambiguity and focalization