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- Categoria: Area Scientifica
- Scritto da Paolo Dragone
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PubbliTesi - La Tesi
Non-Sentential Utterances in Dialogue: Experiments in Classification and Interpretation
Scheda Sintetica
Autore: Paolo Dragone
Relatore: Roberto Navigli
Università: Università degli Studi di Roma “La Sapienza”
Facoltà: Facoltà di Ingegneria dell’Informazione, Informatica e Statistica
Corso: Laurea Magistrale in Ingegneria Informatica
Data di Discussione: 22/10/2015
Voto: 110 cum laude
Disciplina: Natural Language Processing
Tipo di Tesi: Sperimentale
Altri Relatori: Pierre Lison
Lingua: Inglese
Grande Area: Area Scientifica
Settori Interessati: Enti di Ricerca, Università
Descrizione:
Non-sentential utterances (NSUs) are utterances that lack a complete sentential form but whose meaning can be inferred from the dialogue context, such as “OK”, “where?”, “probably at his apartment”. The interpretation of non-sentential utterances is an important problem in computational linguistics since they constitute a frequent phenomena in dialogue and they are intrinsically context-dependent. The interpretation of NSUs is the task of retrieving their full semantic content from their form and the dialogue context. NSUs also come in a wide variety of forms and functions and classifying them in the right category is a prerequisite to their interpretation. The first half of this thesis is devoted to the NSU classification task. Our work builds upon Fernández et al. (2007) which present a series of machine-learning experiments on the classification of NSUs. We extended their approach with a combination of new features and semi-supervised learning techniques. The empirical results prese ...