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HLT @ DISP, Tor Vergata The AI-NLP group at Computer Science Dept Prof. Maria Teresa PAZIENZA Prof. Roberto BASILI 2-4 Researchers 1-2 PhD students 1-2 Visiting scientists URL: ai-nlp.info.uniroma2.it

HLT @ DISP, Tor Vergata

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Prof. Maria Teresa PAZIENZA Prof. Roberto BASILI 2-4 Researchers 1-2 PhD students 1-2 Visiting scientists URL: ai-nlp.info.uniroma2.it. HLT @ DISP, Tor Vergata. The AI-NLP group at Computer Science Dept. HLT @ Rome, Tor Vergata. Aree di Ricerca: Ingegneria delle Lingue - PowerPoint PPT Presentation

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Page 1: HLT @ DISP, Tor Vergata

HLT @ DISP, Tor Vergata

The AI-NLP group at Computer Science Dept

Prof. Maria Teresa PAZIENZAProf. Roberto BASILI2-4 Researchers1-2 PhD students1-2 Visiting scientists

URL: ai-nlp.info.uniroma2.it

Page 2: HLT @ DISP, Tor Vergata

HLT @ Rome, Tor Vergata

Aree di Ricerca:

Ingegneria delle LingueMetodi robusti per il TALModelli Computazionali del Lessico e Disambiguazione del Senso

Apprendimento Automatico per il TAL su larga scala

Applicationi del TAL:Information Extraction e Retrieval (Categorizzazione)Question Answering

Ingegneria della Conoscenza Ontologica mediata linguisticamente

Page 3: HLT @ DISP, Tor Vergata

HLT @ DISP, Tor Vergata

ARIOSTO (’92): Acquisizione Automatica di conoscenza

lessicale

CHAOS (’98.02): Analizzatore sintattico (Italiano,

Inglese)

RGL (’97): Analisi formale dei concetti per l’acquisizione di

schemi di sottocategorizzazione verbale (Reticoli di GALOIS)

GoDoT (‘98): Disambiguazione Semantica

SATOR (’00): Apprendimento Automatico di schemi per IE

ONTOLOAD (’01): Acquisizione di ontologie di dominio a

partire dai testi

Sistemi

Page 4: HLT @ DISP, Tor Vergata

Analisi Sintattica

• Riconoscimento Grammaticale Robusto (CHAOS) (Basili et al., ECAI98, IWPT2000, NLE2002)

• Modularità e Lesssicalizzazione (Ing/It)

• Rappresentazione OO (orientata agli oggetti) dei dati linguistici

• 6 fasi inernedie di eaborazione grammaticale (e.g. etichettatura sintattica, i.e. POS tagging)

• Riusabilita’ tra lingue e domini diversi80% Prec/Rec per l’inglese (IWPT’00)90 p/sec (per l’italiano e l’inglese) (Ecai

‘98)

Page 5: HLT @ DISP, Tor Vergata

Analisi Sintattica: CHAOS

Page 6: HLT @ DISP, Tor Vergata

ECRAN (97-98) Apprendimento lessicale per IE adattivo

TREVI (99-00) Categorizzazione e personalizzazione

basata sul testo

NAMIC (00-02) Hyperlinking multilinguale su flussi di

notizie di agenzia

MOSES (02-04) Question Answering basato su ontologie

PrestoSpace (04-) Indicizzazione ed Interrogazione

Semantica di dati multimediali (RAI)

HLT @ Rome, Tor Vergata

Progetti Internazionali (EU Esprit, 5-6 FW)

Page 7: HLT @ DISP, Tor Vergata

NAMICEnglishMS

ItalianMS

SpanishMS

World Model

EnglishEM

ItalianEM

SpanishEM

Language processors

 Hyperlinking

Engine

News streams

XML Objective

Representation

 Multilingual Hypernews

Engine

 NAMIC monitor

The NAMIC architecture

Page 8: HLT @ DISP, Tor Vergata

Il progetto: PrestoSpace

The objective of the project is to provide technical devices and systems for digital preservation of all types of audio-visual collections. The aim is to build-up preservation factories providing affordable services to all kinds of collections owners to manage and distribute their assets.

The 20th Century was the first with an audiovisual record. Audiovisual media became the new form of cultural expression. These historical, cultural and commercial assets are now entirely at risk from deterioration.

Broadcasters have begun to digitise their large holdings, at high cost and using complex technology. The preservation factory approach aims for an integrated automated solution of sufficient low cost so that the small-to-medium collections can be saved through common standardised services.

Page 9: HLT @ DISP, Tor Vergata

The Partnership

Participant. Role Participant name Participant short name

Country

CO Institut National de l’Audiovisuel INA FranceCR British Broadcasting Corporation BBC UKCR Radiotelevisione Italiana RAI ItalyCR Joanneum Research JRS Austria

CRNetherlands Institute for Sound and Vision - Beeld en Geluid B&G Netherlands

CR Oesterreichischer Rundfunk ORF AustriaCR University of Sheffield , Usheff UK

.. .. .. ..CR Unversity of Surrey U_Surrey UKCR University of La Rochelle ULR FranceCR Trinity College Dublin TCDublin IrelandCR Gdansk University of Technology GUT PolandCR University Roma Tor Vergata UTV Italy