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Istituto di linguistica computazionale "Antonio Zampolli"

Torna all'elenco Contributi in atti di convegno anno 2008

Contributo in atti di convegno

Tipo: Contributo in atti di convegno

Titolo: Learning properties of Noun Phrases: from data to functions

Anno di pubblicazione: 2008

Formato: Elettronico

Autori: Quochi, Valeria; Calderone, Basilio

Affiliazioni autori: Consiglio Nazionale delle Ricerche (CNR), Scuola Normale Superiore

Autori CNR:

  • VALERIA QUOCHI

Lingua: inglese

Abstract: The paper presents two experiments of unsupervised classification of Italian noun phrases. The goal of the experiments is to identify the most prominent contextual properties that allow for a functional classification of noun phrases. For this purpose, we used a Self Organizing Map is trained with syntactically-annotated contexts containing noun phrases. The contexts are defined by means of a set of features representing morpho-syntactic properties of both nouns and their wider contexts. Two types of experiments have been run: one based on noun types and the other based on noun tokens. The results of the type simulation show that when frequency is the most prominent classification factor, the network isolates idiomatic or fixed phrases. The results of the token simulation experiment, instead, show that, of the 3 6 attributes represented in the original input matrix, only a few of them are prominent in the re-organization of the map. In particular, key features in the emergent macro-classification are the type of determiner and the grammatical number of the noun. An additional but not less interesting result is an organization into semantic/pragmatic micro-classes. In conclusions, our result confirm the relative prominence of determiner type and grammatical number in the task of noun (phrase) categorization.

Lingua abstract: inglese

Pagine da: 2596

Pagine a: 2602

Pagine totali: 7

ISBN: 2-9517408-4-0

Referee: Sė: Internazionale

Indicizzato da: ISI Web of Science (WOS) [000324028902114]

Parole chiave:

  • cognitive linguistics
  • noun phrase

URL: http://www.lrec-conf.org/proceedings/lrec2008/summaries/644.html

Congresso nome: Sixth International Conference on Language Resources and Evaluation (LREC'08)

Congresso luogo: Marrakech, Morocco

Congresso data: 28-30 Maggio

Congresso rilevanza: Internazionale

Congresso relazione: Contributo

Strutture CNR:

 
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