Pattern Recognition and Human Language Technology Group

Pattern Recognition and Human Language Technology Group

Institut Tecnol `ogic d’Inform `atica

Departament de Sistemes Inform `atics i Computaci ´o Universitat Polit `ecnica de Val `encia

http://prhlt.iti.es/ December 2005

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1986 Universitat Polit `ecnica de Val `encia: RFIA group, DSIC department

• European projects: ROARS, SPIN, EuTrans-I

• Spanish projects: ALBAYZIN, TRACOM

1997 PRHLT group derives from RFIA group and integrates in ITI

• European projects: EuTrans-II, TT2

• Spanish projects:

– Pattern Recognition and Computer Vision: TAR, ATRAM, TYRIG – Machine Translation: TAVAL, SISHITRA, TEFATE,

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• Pattern Recognition

• Handwritten Character Recognition

• Biometrics • Computer Vision • Language Translation • Speech Processing • Machine Learning • Dialogue Systems

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• Academic degree – 12 Ph. D.

– 19 Ph. D. Students

• Academic position

– 14 Professors and assistants (DSIC-UPV, DC-UPV, DI-UCLM) – 8 Research contracts

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• Projects

– EUTRANS: Example based langUage TRANslation Systems.

ESPRIT Open Long Term Research. ACCION 30268. 2 Phases.1996-2000. ITI, Zeres, Fundaziones Ugo Bordoni, Aachen University.

– TT2: TransType2-Computer-Assisted Translation.

IST Programme. IST-2001-32091. 2002-2005. ATOS, ITI, Aachen University, Celer, RALI, Xerox Co., Gamma.

• “Acciones Integradas”

– Espa ˜na-Alemania. 2000-2002: ITI, Aachen University – Espa ˜na-Portugal. 2002-2004: ITI, INESC ID/IST Lisbon.

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(CICYT)

• EXTRA: Extensiones del sistema de traducci ´on de texto y habla en dominios restringidos aprendible con ejemplos. 1997-1999. UJI, DSIC-UPV.

• BASURDE: Desarrollo de un sistema de di ´alogo para habla espont ´anea en un dominio sem ´aticamente restringido. 1998-2001. UPC, DSIC-UPV, LSI-UPC, EHU-UPV, UZ, UJI.

• TAVAL: Traductor autom ´atico bidireccional entre castellano y valenciano. 2000-2001. ITI.

• SISHITRA: Sistemas h´ıbridos para la traducci ´on valenciano-castellano a partir de voz y texto.

2001-2003. ITI, LSI-UA.

• TAR: T ´ecnicas avanzadas en reconocimiento de formas y sus aplicaciones en procesos industriales y comerciales. 2001-2003. ITI, LSI-UA, LSI-UJI.

• DIHANA: Sistema de Di ´alogo para el Acceso a la Informaci ´on mediante habla espont ´anea en diferentes entornos. CICYT. 2003-2005. DSIC-UPV, EHU-UPV, UZ.

• ATRAM: Aplicaci ´on de T ´ecnicas de Reconocimiento de Formas para el An ´alisis Morfol ´ogico del Pie y Fabricaci ´on del Calzado. CICYT. 2001-2004. IBV, DSIC-UPV.

• ITEFTE: Inferencia de traductores de estados finitos para la traducci ´on autom ´atica y la ayuda a la traducci ´on en tareas espec´ıficas. 2003-2005. LSI-UA, DSIC-UPV.

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• AMETRA, ADUR Software Productions S. Co.

• Pick-by-Voice, RUMBO Sistemas S.L.

• A classification system by voice, Teismaderas S.A.

• Biometrics, Advanced Software Technologies S.A.

• Opinion poll by phone, ODEC.

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• Proceedings of conferences: International Conference on Pattern Recognition, International Conference on Acoustic, Speech and Signal Processing, Conference on Computational Linguistics, ...

• Journals: IEEE Transactions Pattern Analysis and Machine Intelligence, Pattern Recognition, Machine Learning Journal, Computational Linguistics, IEEE Transactions on Acoustic, Speech and Signal Processing, Computer Speech and Language, IEEE Transactions on Speech and Audio Processing, IEEE Transactions on Systems, Man and Cybernetics, ...

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• European groups

– Lehrstuhl f ¨ur Informatik VI. RWTH Aachen - University of Technology. Germany. (H. Ney) – Equipe Universitaire de Recherche en Informatique de Saint Etienne (EURISE). Universit ´e

de Saint Etienne-Jean Monnet. France. (C. de la Higuera)

– Institute for Systems and Computer Engineering. Spoken Language Systems Lab (L2F). Lisboa. Portugal. (I. Trancoso)

• Spanish groups

– Grupo de Reconocimiento Autom ´atico del Habla. Universidad del Pa´ıs Vasco

– Grupo de Aprendizaje Computacional, Reconocimiento Autom ´atico y Traducci ´on del Habla.

Universitat Jaume I.

– Grupo de Reconocimiento de Formas e Inteligencia Artificial. Universidad de Alicante – Grup de Teoria del Senyal. Universitat Polit ´ecnica de Catalunya

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• MODELS

– Hidden markov models

– Stochastic finite-state transducers

– Statistical alignment models and phrase-based models – (Local) Feature vectors and (weighted) distances

• TRAINING

– Statistical estimation (E-M algorithms) – Grammatical inference techniques

– Clustering

• SEARCH

– Viterbi algorithm (+ N-best + Word graphs) – Stack-decoding algorithm (+ N-best)

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• ATROS: Speech recognition, speech translation and handwritten character recognition.

• PBSMT: Machine translation.

• TT2: Computer-assisted translation.

• LFC: Face recognition, speaker recognition, computer vision.

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• SISHITRA: A knowledge-based Spanish-to-Catalan translator http://prhltdemos.iti.es/˜taval/ (Access)

• Statistical translators

http://dcomgp05.gnd.upv.es/WebTrans.debug/trad – TEFATE: Spanish-to-Catalan (Unrestricted task)

– AMETRA-METEO: Spanish-to-Basque (Meteorological News) – AMETRA-DFB: Spanish-to-Basque (Administrative task)

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• Translation of printer manuals – English-Spanish – English-German – English-French • Weather reports – Spanish-Basque • Administrative proceedings – Spanish-Basque – Spanish-Catalan

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• Spanish-to-English tourist task

http://prhltdemos.iti.upv.es/demo/spanish_demo.html

• Italian-to-English tourist task

http://prhltdemos.iti.upv.es/demo/italian_demo.html

• Catalan-to-English tourist task

http://prhltdemos.iti.upv.es/demo/valcat_demo.html

• Spanish-to-Basque tourist task

http://prhltdemos.iti.upv.es/demo/ametra_demo.html

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• A speech understanding prototype

http://prhlt.iti.es/demos/demo_speechunderstand/index.htm

• Automatic voice-driven telephone exchange

http://prhlt.iti.es/demos/demo_exchange/index.htm

• Speech dialogue with an information system

http://physionet.cps.unizar.es/˜eduardo/investigacion/voz/ tic98-0423.html

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• Off-line handwritten character recognition – An example

http://prhlt.iti.es/demos/demo_htr/index.htm

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• Automatic face recognition – Preprocessing

– Training & search

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• Plain text classification

• Handwritten text classification

• Chromosome classification

• Prostate ultrasonography pattern analysis

• Breast cancer detection in digitized mammograms