Lecture Notes in Computer Science 1876 EditedbyG.Goos,J.HartmanisandJ.vanLeeuwen 3 Berlin Heidelberg NewYork Barcelona HongKong London Milan Paris Singapore Tokyo Francesc J. Ferri Jose´ M. In˜esta Adnan Amin Pavel Pudil (Eds.) Advances in Pattern Recognition Joint IAPR International Workshops SSPR 2000 and SPR 2000 Alicante, Spain, August 30 – September 1, 2000 Proceedings 1 3 SeriesEditors GerhardGoos,KarlsruheUniversity,Germany JurisHartmanis,CornellUniversity,NY,USA JanvanLeeuwen,UtrechtUniversity,TheNetherlands VolumeEditors FrancescJ.Ferri UniversityofVale`ncia,DepartmentofComputerScience 46100Burjassot(Vale`ncia),Spain E-mail:[email protected] Jose´M.In˜esta UniversityofAlicante,DepartmentofComputerLanguagesandSystems 03071Alicante,Spain E-mail:[email protected] AdnanAmin UniversityofNewSouthWales,SchoolofComputerScienceandEngineering Sydney,NSW2052,Australia E-mail:[email protected] PavelPudil AcademyofSciencesoftheCzechRepublic InstituteofInformationTheoryandAutomation 18208Prague8,CzechRepublic E-mail:[email protected] Cataloging-in-PublicationDataappliedfor DieDeutscheBibliothek-CIP-Einheitsaufnahme Advancesinpatternrecognition:proceedings;jointIAPR internationalworkshops/SSPR2000andSPR2000,Alicante,Spain, August30-September1,2000.FrancescJ.Ferri...(ed.).-Berlin; Heidelberg;NewYork;Barcelona;HongKong;London;Milan; Paris;Singapore;Tokyo:Springer,2000 (Lecturenotesincomputerscience;Vol.1876) ISBN3-540-67946-4 CRSubjectClassification(1998):I5,I4,I2.10,I.2 ISSN0302-9743 ISBN3-540-67946-4Springer-VerlagBerlinHeidelbergNewYork Thisworkissubjecttocopyright.Allrightsarereserved,whetherthewholeorpartofthematerialis concerned,specificallytherightsoftranslation,reprinting,re-useofillustrations,recitation,broadcasting, reproductiononmicrofilmsorinanyotherway,andstorageindatabanks.Duplicationofthispublication orpartsthereofispermittedonlyundertheprovisionsoftheGermanCopyrightLawofSeptember9,1965, initscurrentversion,andpermissionforusemustalwaysbeobtainedfromSpringer-Verlag.Violationsare liableforprosecutionundertheGermanCopyrightLaw. Springer-VerlagBerlinHeidelbergNewYork amemberofBertelsmannSpringerScience+BusinessMediaGmbH ©Springer-VerlagBerlinHeidelberg2000 PrintedinGermany Typesetting:Camera-readybyauthor,dataconversionbyPTP-Berlin,StefanSossna Printedonacid-freepaper SPIN10722379 06/3142 543210 Preface ThisvolumecontainsallthepaperspresentedatSSPR2000andSPR2000,held at the University of Alicante, Spain, August 30 { September 1, 2000. This was the second time these two technical workshops were held back- to-back. SSPR2000 was the eighth meeting of the international workshop on Structural and Syntactic Pattern Recognition and SPR2000 was the third in- ternational workshop on Statistical Techniques in Pattern Recognition. These workshops have been traditionally sponsored by two of the most re- presentative technical committees of the International Association of Pattern Recognition (IAPR): the TC2 and TC1, respectively. Atotalof130paperswasreceivedforconsiderationfrom almost40di(cid:11)erent countries.Boththesubmissionandthereviewingprocesswerecarriedoutsepa- rately for each workshop even though papers were distributed among reviewers in both program committees according to their particular previously expressed interests. As a result of this \joint" reviewing process, papers were distributed into three categories: SSPR, SPR, and SSSPR. We designed the technical program of the joint workshop according to the accepted papers and (cid:12)ve oral sessions were allocated for each of the two (cid:12)rst categories and two oral sessions (eight papers) for the third one. The two poster sessions (one per workshop) were held at the same time and were allocated a large amount of space and time to encourage discussion and interaction among researchers. A total of 52 papers was selected for oral pre- sentation and 35 papers were presented in the two poster sessions. In addition, we invited (cid:12)ve distinguished speakers, Jim Bezdek from the University of West Florida, USA, Marco Gori from the Universita(cid:18) di Siena, Italy, Colin de la Hi- guera from the Universit(cid:19)e Jean Monnet, Saint E(cid:19)tienne, France, Sarunas Raudys fromtheInstituteofMathematicsandInformatics,Vilnius,Lithuania,andJosef Kittler from the University of Surrey, UK. SSPR2000 and SPR2000 were sponsored by the Conselleria d’Educacio(cid:19) de laGeneralitatValencianaundergrantRG00-01-22,theDepartamentdeLlengu- atges i Sistemes Inform(cid:18)atics (DLSI) and the Escuela Polit(cid:19)ecnia Superior of the Universitat d’Alacant, the Departament d’Informatica (DI) of the Universitat de Val(cid:18)encia, and the International Association of Pattern Recognition (IAPR). We would like to express our gratitude to all our sponsors and, specially, to the members of the two program committees who faced a really tough task which has lead to a selection of papers of a very high quality. Special thanks are due to Ricardo Ferr(cid:19)(cid:16)s, Esther de Ves, and Elena D(cid:19)(cid:16)az of theDI,UniversitatdeVal(cid:18)encia,andFranciscoMoreno-Seco,JorgeCalera-Rubio, andLuisaMico(cid:19)oftheDLSI,Universitatd’Alacant,fortheirunbeatablee(cid:11)ortin theorganizationoftheworkshopsandinthepreparationoftheproceedings.We appreciatethehelpandunderstandingoftheeditorialsta(cid:11)ofSpringer-Verlag,in VI Preface particular Alfred Hofmann, who supported the publication of these proceedings in their LNCS series. Finally,wewouldliketomentiontwocolleagueswhopassedawayduringthe preparation of these workshops: Pierre Devijver, after whom the last of the 5 plenary papers in the workshop is named, and Edzard Gelsema who died whilst holding the o(cid:14)ce of President of the IAPR. September 2000 Francesc J. Ferri Jos(cid:19)e M. In~esta Adnan Amin Pavel Pudil SSPR2000 Organization Co-chairmen Jos(cid:19)e M. In~esta Adnan Amin Dept. Lenguajes y Sistemas School of Computer Science and Inform(cid:19)aticos Engineering Universidad de Alicante University of New South Wales Campus de San Vicente, 03071 Alicante, Spain Sydney 2052, NSW, Australia [email protected] [email protected] Program Committee K. Abe (Japan) G.Gimelfarb(N.Zealand) J. Oncina (Spain) H. Baird (USA) L. Goldfarb (Canada) J. Oommen (Canada) G. Borgefors (Sweden) E. Hancock (UK) P. Perner (Germany) H. Bunke (Switzerland) R. Haralick (USA) A. Sanfeliu (Spain) T. Caelli (USA) J.M. Jolion (France) G. Sanniti di Baja (Italy) L.P. Cordella (Italy) R. Kasturi (USA) K. Tombre (France) I. Dinstein (Israel) W. Kropatsch (Austria) E. Vidal (Spain) D. Dori (Israel) H-J. Lee (Taiwan) P. Wang (USA) Organizing Committee Jorge Calera-Rubio Luisa Mic(cid:19)o Jose Luis Verdu(cid:19) Mikel Forcada Francisco Moreno Eva Go(cid:19)mez Juan Ramo(cid:19)n Rico Supported by International Association of Pattern Recognition Conselleria d’Educacio(cid:19) de la Generalitat Valenciana Departament de Llenguatges i Sistemes Inform(cid:18)atics, Universitat d’Alacant Departament d’Informatica, Universitat de Val(cid:18)encia Escuela Polit(cid:19)ecnica Superior de Alicante SPR2000 Organization Co-chairmen Francesc J. Ferri Pavel Pudil Dept. d’Inform(cid:18)atica Institute of Information Theory and Universitat de Val(cid:18)encia Automation Dr Moliner, 50 46100 Burjassot, Spain Academy of Sciences [email protected] 182 08 Prague, Czech Republic [email protected] Program Committee V. Brailovsky (Israel) V. Hlava(cid:20)c (Czech Rep.) N. Murshed (Brazil) R. Carrasco (Spain) A.K. Jain (USA) J.Novovi(cid:20)cov(cid:19)a(CzechRep) B.V. Dasarathy (USA) J. Kittler (UK) E. Nyssen (Belgium) R.W. Duin (Netherlands) M. Kudo (Japan) S(cid:20). Raudys (Lithuania) M. Gilloux (France) L. Lam (Hong Kong) P. Rocket (UK) J. Grim (Czech Rep.) G. Lugosi (Spain) M. Schlesinger (Ukraine) T.M. Ha (Switzerland) A. Maeder (Australia) S. Singh (UK) J.P. Haton (France) D. Maravall (Spain) C.Y. Suen (Canada) Organizing Committee Jesu(cid:19)s Albert Elena D(cid:19)(cid:16)az Jesu(cid:19)s Malo Guillermo Ayala Ricardo Ferr(cid:19)(cid:16)s Esther de Ves Supported by International Association of Pattern Recognition Conselleria d’Educacio(cid:19) de la Generalitat Valenciana Departament de Llenguatges i Sistemes Inform(cid:18)atics, Universitat d’Alacant Departament d’Informatica, Universitat de Val(cid:18)encia Table of Contents Invited Papers Some Notes on Twenty One (21) Nearest Prototype Classi(cid:12)ers::::::::::: 1 James C. Bezdek (USA), Ludmila I. Kuncheva (UK) Adaptive Graphical Pattern Recognition Beyond Connectionist-Based Approaches ::::::::::::::::::::::::::::::::::::::::::::::::::::::: 17 Giovanni Adorni (Italy), Stefano Cagnoni (Italy), Marco Gori (Italy) Current Trends in Grammatical Inference ::::::::::::::::::::::::::::: 28 Colin De La Higuera (France) Classi(cid:12)er’s Complexity Control while Training Multilayer Perceptrons :::: 32 S(cid:20)aru(cid:22)nas Raudys (Lithuania) Pierre Devijver Lecture A Framework for Classi(cid:12)er Fusion: Is It Still Needed? :::::::::::::::::: 45 Josef Kittler, J. (UK) Hybrid and Combined Methods Image Pattern Recognition Based on Examples { A Combined Statistical and Structural-Syntactic Approach::::::::::::::::::::::::::::::::::: 57 Jiang Gao (China), Xiaoqing Ding (China), Jing Zheng (Canada) A Hybrid System for the Recognition of Hand-Written Characters ::::::: 67 Rudolf Freund (Austria), Markus Neubauer (Austria), Martin Summerer (Austria), Stefan Gruber (Austria), Ju¨rgen Scha(cid:11)er (Austria), Roland Swoboda (Austria) Improving Statistical Measures of Feature Subsets by Conventional and Evolutionary Approaches ::::::::::::::::::::::::::::::::::::::::::: 77 Helmut A. Mayer (Austria), Petr Somol (Czech Rep.), Reinhold Huber (Austria), Pavel Pudil (Czech Rep.) Selection of Classi(cid:12)ers Based on Multiple Classi(cid:12)er Behaviour ::::::::::: 87 Giorgio Giacinto (Italy), Fabio Roli (Italy), Giorgio Fumera (Italy)