Calendario
Luz Rello: "Elliphant: A Machine Learning Method for Identifying Subject Ellipsis and Impersonal Constructions in Spanish" |
Ponente: Luz Rello (UPF) Fecha: viernes 1 de octubre 2010 Hora: 12h00 Lugar de celebración: Sala 2.24, Fac. de Psicología, UNED Resumen This seminar will present Elliphant, a machine learning system for classifying Spanish subject ellipsis as either referential or non-referential. Linguistically motivated features are incorporated in a system which performs a ternary classification: verbs with explicit subjects, verbs with omitted but referential subjects (zero pronouns), and verbs with no subject (impersonal constructions). To the best of our knowledge, this is the first attempt to automatically identify non-referential ellipsis in Spanish. Due to the fairly frequent elision of subjects in Spanish, this system is useful as the classification of elliptic subjects as referential or non-referential can improve the accuracy of Natural Language Processing where zero anaphora resolution is necessary, inter alia, for information extraction, machine translation, automatic summarization and text categorization. Lugar de Celebración Sala 2.26 (segunda planta)Fac. de Psicología, UNEDc/ Juan del Rosal, 1028040 Madrid |