Publications of Yannis Tzitzikas

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Several of the papers listed are available electronically in postscript or pdf format. These papers are being made available here to facilitate the timely dissemination of scholarly work; however, most of them are copyrighted, and copyright and all related rights are retained by the respective copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by such copyright. These papers may not be reposted without the explicit written permission of the copyright holder.

By YEAR	By publication TYPE	By TOPIC (plus some LINKS)
Forthcoming 2009 2008 2007 2006 2005 2004 2003 2002 2001 Before 2001	Referreed Book Chapters Refereed International Journals Refereed International Conferences Refereed National Conferences Invited Publications Technical Reports and Thesis Edited Collections	Faceted Classification, Taxonomies and CTCA Information Integration (Mediators, P2P Systems) Automatic Constuction of Ontology Mappings On Information Access, Retrieval and Visualization Meta Ranking Semantic Networks and Hypermedia (including Semantic Web) Miscellanea

By year

Forthcoming

M. Theodoridou, Y. Tzitzikas, M. Doerr, Y. Marketakis, V. Melesssanakis,
Modeling and Querying Provenance by Extending CIDOC CRM ,
J. Distributed and Parallel Databases (J. DAPD) , Special Issue Provenance in Scientific Databases (to appear in 2010)

2009

Book: Giovanni Maria Saco and Yannis Tzitzikas (Eds)
Dynamic Taxonomies and Faceted Search: Theory, Practice and Experience, Springer, 2009
Panagiotis Papadakos, Stella Kopidaki, Nikos Armenatzoglou and Yannis Tzitzikas
Exploratory Web Searching with Dynamic Taxonomies and Results Clustering,
Procs of the 13th European Conference on Digital Libraries (ECDL'09), Corfu, Greece, Sep-Oct 2009
(to be presented also at the 8th Hellenic Data Management Symposium - HDMS’09, August 2009, Athens Greece).
Stella Kopidaki, Panagiotis Papadakos and Yannis Tzitzikas
STC+ and HSTC: Two Novel Online Results Clustering Methods for Web Searching,
Procs of the 10th International Conference on Web Systems Engineering (WISE'09), Poznan, Poland, Oct 2009
Anastasia Analyti, Yannis Tzitzikas and Nicolas Spyratos
Specifying Valid Compound Terms in Interrelated Faceted Taxonomies,
Procs of the 28th International Conference on Conceptual Modeling (ER'09), Gramado, Brazil, Nov 2009.
Yannis Marketakis, Makis Tzanakis and Yannis Tzitzikas
PreScan: Towards Automating the Preservation of Digital Objects,
International ACM Conference on Management of Emergent Digital EcoSystems (MEDES'09), Lyon, France, Oct. 2009.
Panagiotis Papadakos, Yannis Theoharis, Nikos Armenatzoglou and Yannis Tzitzikas
Object-Relational Database Representations for Text Indexing,
CoRR, Information Retrieval, arXiv:0906.3112v1 [cs.IR], June 2009

2008

Yannis Tzitzikas, Yannis Theoharis and Dimitris Andreou
On Storage Policies for Semantic Web Repositories that Support Versioning,
Procs of the 5th European Semantic Web Conference (ESWC'08), Tenerife, Spain, June 2008
Yannis Tzitzikas, Yannis Theoharis and Dimitris Andreou
On Archiving and Versioning Semantic Web Data,
Procs of the 7th Hellenic Data Management Symposium (HDMS'2008), Heraklion, Greece, July 2008
Dimitris Zeginis, Yannis Tzitzikas and Vassilis Christophides
On Computing Deltas of RDF/S Knowledge Bases,
Procs of the 7th Hellenic Data Management Symposium (HDMS'2008), Heraklion, Greece, July 2008
P. Papadakos, Y. Theoharis, Y. Marketakis, N. Armenatzoglou and Y. Tzitzikas
Mitos: Design and Evaluation of a DBMS-based Web Search Engine,
Procs of 12th Pan-Hellenic Conference of Informatics (PCI'2008), Samos, Greece, August 2008
Yannis Tzitzikas, N. Armenatzoglou and P. Papadakos
FleXplorer: A Framework for Providing Faceted and Dynamic Taxonomy-based Information Exploration,
Procs of FIND'2008 (at DEXA '08), Turin, Italy, September 2008
Yannis Tzitzikas,
Evolution of Faceted Taxonomies and CTCA Expressions ,
KAIS Journal, 13(3), 2007
Yannis Theoharis, Yannis Tzitzikas, Dimitris Kotzinos and Vassilis Christophides
On Graph Features of Semantic Web Schemas,
IEEE Transactions on Knowledge and Data Engineering, 2008
Carlo Meghini, Nicolas Spyratos and Yannis Tzitzikas
Abduction for Accessing Information Sources,
Journal Foundamenta Informaticae, (83), 2008
Dimitris Kotzinos, Giorgos Flouris, Yannis Tzitzikas, Dimitris Andreou, Vassilis Christophides
Supporting Evolution of Knowledge Artifacts in Web Based Learning Environments,
in Solutions and Innovations in Web-Based Technologies for Augmented Learning: Improved Platforms, Tools and Applications, (Series Title: Advances in Web-Based Learning), (accepted for publication), 2008
Ioannis Roussidis, George Tzagkarakis, Dimitris Plexousakis and Yannis Tzitzikas
On a Probabilistic Combination of Prediction Sources,
17th International Symposium on Methodologies for Intelligent Systems (ISMIS'08), Toronto, Canada, May 20-23, 2008
P. Papadakos, G. Vasiliadis, Y. Theoharis, N. Armenatzoglou, S. Kopidaki, Y. Marketakis, M. Daskalakis, K. Karamaroudis, G. Linardakis, G. Makrydakis, V. Papathanasiou, L. Sardis, P. Tsialiamanis, G. Troullinou, K. Vandikas, D. Velegrakis and Y. Tzitzikas
The Anatomy of Mitos Web Search Engine,
CoRR, Information Retrieval, abs/0803.2220, 2008

2007

Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos,
An Algebra for Specifying Valid Compound Terms in Faceted Taxonomies ,
Journal on Data and Knowledge Engineering (DKE), 62(1), 2007.
Yannis Tzitzikas, Dimitris Kotzinos and Yannis Theoharis,
On Ranking RDF Schema Elements (and its Application in Visualization) ,
Journal of Universal Computer Science (JUCS), Special Issue: Ontologies and Their Applications, Nov 2007
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning,
International Journal of Web-based Learning and Teaching Technologies ( IJWLTT ) (accepted for publication).
Yannis Tzitzikas and Giorgos Flouris
Mind the (Intelligibility) Gap ,
Procs of 11th European Conference on Research and Advanced Technology for Digital Libraries, ECDL'2007, Budapest, Hungary, September 2007.
Yannis Tzitzikas,
Dependency Management for the Preservation of Digital Information ,
Procs of the 18th International Conference on Database and Expert Systems Applications, DEXA'2007, Regensburg, Germany, September 2007.
Yannis Tzitzikas,
On Preserving the Intelligibility of Digital Objects through Dependency Management ,
Procs of the International Conference PV'2007 (Ensuring the Long-Term Preservation and Value Adding to Scientific and Technical Data), Oberpfaffenhofen/Munich, Germany, October 2007.
Dimitris Zeginis, Yannis Tzitzikas and Vassilis Christophides,
On the Foundations of Computing Deltas between RDF models ,
Procs of the 6th International Semantic Web Conference (ISWC'2007), Korea, Nov. 2007. (BEST PAPER AWARD)
Yannis Tzitzikas and Dimitris Kotzinos,
(Semantic Web) Evolution through Change Logs: Problems and Solutions ,
Procs of Artificial Intelligence and Applications, AIA’2007, Innsbruck, Austria, February 2007.
Yannis Tzitzikas and Yannis Theoharis,
Naming Functions for the Vector Space Model ,
Procs of the 29th European Conference on Information Retrieval, ECIR'2007, Rome, Italy, April 2007.
Yannis Tzitzikas and Anastasia Analyti,
Faceted Taxonomy-based Information Management ,
Procs of the International Workshop on Dynamic Taxonomies and Faceted Search, FIND'2007 (satellite workshop of DEXA'2007), Regensburg, Germany, September 2007
Carlo Meghini, Yannis Tzitzikas and Anastasia Analyti,
Query Evaluation in P2P Systems of Taxonomy-based Sources: Algorithms, Complexity, and Optimizations ,
CoRR arXiv:0709.3034v1 [cs.DB], 2007

2006

Yannis Tzitzikas,
An Algebraic Method for Compressing Symbolic Data Tables ,
Journal on Intelligent Data Analysis, 10(4), 2006.
Yannis Tzitzikas, Carlo Meghini and Nicolas Spyratos,
A Unified Interaction Scheme for Information Sources ,
Journal of Intelligent Information Systems (JIIS), 26(1), January 2006.
Yannis Tzitzikas and Anastasia Analyti,
Mining the Meaningful Term Conjunctions from Materialised Faceted Taxonomies: Algorithms and Complexity ,
KAIS Journal, 9(4), 2006
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning ,
Procs of the First International Workshop on Building Technology Enhanced Learning solutions for Communities of Practice, TEL-CoPS'2006,
Heraklion, October 2006.
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Trialogical E-Learning and Emergent Knowledge Artifacts ,
Procs of the First European Conference on Technology Enhanced Learning, EC-TEL'2006,
Heraklion, October 2006.
Yannis Tzitzikas and Jean-Luc Hainaut,
On the Visualization of Large-sized Ontologies ,
Procs of the 8th International Conference on Advanced Visual Interfaces, AVI'2006,
Venezia, May, 2006.
Yannis Tzitzikas
Revising Faceted Taxonomies and CTCA Expressions,
Procs of 4th Hellenic Conference on Artificial Intelligence, SETN'2006,
Heraklion, Greece, May 2006.
Carlo Meghini, Yannis Tzitzikas and Nicolas Spyratos
Abduction for Extending Incomplete Information Sources,
Procs of 4th Hellenic Conference on Artificial Intelligence, SETN'2006,
Heraklion, Greece, May 2006.
Y Theoharis, V. Christophides and Y. Tzitzikas
On Graph Features of Semantic Web Schemas,
Procs of the 5th Hellenic Data Management Symposium, HDMS'2006,
Thessaloniki, Greece, September 2006.

2005

Yannis Tzitzikas and Jean-Luc Hainaut,
How to Tame a Very Large ER Diagram (using Link Analysis and Force-Directed Placement Algorithms) ,
Procs of 24th International Conference on Conceptual Modeling, ER'05,
Klagenfurt, Austria, October 2005.
Yannis Tzitzikas and Jean-Luc Hainaut,
Less is More: How to Tame a Very Large ER Diagram,
Procs of 4th Hellenic Data Management Symbosium, HDMS'05,
Athens, Greece, August 2005.
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos,
Mediators over Taxonomy-based Information Sources,
VLDB Journal, 14(1), March 2005
Yannis Tzitzikas, Anastasia Analyti and Nicolas Spyratos,
Compound Term Composition Algebra: The Semantics,
LNCS Journal on Data Semantics Volume 2, January 2005

2004

Yannis Tzitzikas, R. Launonen, M. Hakkarainen, P. Kohonen, T. Leppanen, E. Simpanen, H. Tornroos, P. Uusitalo and P. Vanska
FASTAXON: A system for FAST (and Faceted) TAXONomy design,
Procs of the 23rd International. Conference. on Conceptual Modeling, ER’2004,
Shanghai, China, November 2004
Carlo Meghini and Yannis Tzitzikas
Querying Articulated Sources,
Procs of the 3rd International Conference on Ontologies, Databases and Applications of Semantics for Large Scale Information Systems, ODBASE’2004,
Larnaca, Cyprus, October 2004
Yannis Tzitzikas and Anastasia Analyti
Mining the Meaningful Compound Terms from Materialised Faceted Taxonomies,
Procs of the 3rd International Conference on Ontologies, Databases and Applications of Semantics for Large Scale Information Systems, ODBASE’2004,
Larnaca, Cyprus, October 2004
Yannis Tzitzikas
An Algebraic Method for Compressing Very Large Symbolic Data Tables,
Procs of the Workshop on Symbolic and Spatial Data Analysis of ECML/PKDD 2004, SSDA’2004,
Pisa, Italy, September 2004.
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos,
A Unifying Framework for Flexible Information Access in Taxonomy-based Sources,
Procs of the 6th International Conference on Flexible Query Answering Systems, FQAS’2004,
Lyon France, June 2004.
Carlo Meghini, Nicolas Spyratos and Yannis Tzitzikas (Editors)
Procs of the 1st International Workshop on Peer-to-Peer Computing and Databases, P2P&DB 2004,
(at EDBT'2004) Heraklion, Crete - Greece, March 14, 2004. (online version)
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos,
Towards a Generalized Interaction Scheme for Information Access,
Procs of the 3rd International Symposium on Foundations of Information and Knowledge Systems, FoIKS’2004,
Vienna Austria, February 2004.

2003

Nicolas Spyratos and Yannis Tzitzikas
Searching,
Wiley Encyclopedia of Electrical and Electronics Engineering
John Wiley & Sons
Yannis Tzitzikas, Anastasia Analyti and Nicolas Spyratos,
The Semantics of the Compound Term Composition Algebra,
Procs of the 2nd International Conference on Ontologies, Databases and Applications of Semantics, ODBASE’2003,
Catania, Sicily, Italy, November 2003
Yannis Tzitzikas and Carlo Meghini
Query Evaluation in Peer-to-Peer Networks of Taxonomy-based Sources,
Procs of the 10th International Conference on Cooperative Information Systems, CoopIS’2003,
Catania, Sicily, Italy, November 2003
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos
Taxonomy-based Conceptual Modeling for Peer-to-Peer Networks,
Procs of the 22th International Conference on Conceptual Modeling, ER’2003,
Chicago, Illinois, October 2003
Carlo Meghini and Yannis Tzitzikas
Query Evaluation over Networks of Logic-based Mediators(POSITION PAPER),
Procs of the 7th International Workshop on Description Logics, DL’2003,
Rome, Italy, September 2003
Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos
An Algebraic Approach for Specifying Compound Terms in Faceted Taxonomies ,
Procs of the 2nd Hellenic Data Management Symposium, HDMS’2003,
Athens, Greece September, 2003
Yannis Tzitzikas and Carlo Meghini
Ostensive Automatic Schema Mapping for Taxonomy-based Peer-to-Peer Systems,
Procs of the 7th International Workshop on Cooperative Information Agents, CIA’2003,
Helsinki, Finland, August 2003 (BEST PAPER AWARD)
Carlo Meghini, Yannis Tzitzikas and Nicolas Spyratos
An Abduction-based Method for Index Relaxation in Taxonomy-based Sources,
Procs of the 28th International Symposium on Mathematical Foundations of Computer Science, MFCS’2003,
Bratislava, Slovac Republic, August 2003
Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos
An Algebra for Specifying Compound Terms for Faceted Taxonomies,
Procs of the 13th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’2003,
(also published in Information Modelling and Knowledge Bases XV, IOS PRESS 2004)
Kitakyushu, Japan, June 2003
Yannis Tzitzikas and Carlo Meghini
Content-based Retrieval Services in Peer-to-Peer Systems using Taxonomies,
ERCIM News,
Volume 53, April 2003

2002

Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Taxonomies for Web Catalogs,
Procs of the 3rd International Conference on Web Information Systems Engineering, WISE’2002,
Singapore, December, 2002
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Taxonomies for Web Catalogs,
ERCIM News,
Volume 51, October 2002 (special issue: Semantic Web)
Yannis Tzitzikas and Nicolas Spyratos
Result Fusion by Mediators Using Voting and Utility Functions,
CNRS-Universite de Paris Sud, Laboratoire de Recherche en Informatique
Rapport de Recherche No 1332, Sep 2002
Yannis Tzitzikas
Collaborative Ontology-based Information Indexing and Retrieval,
PhD Thesis, Department of Computer Science, University of Crete,
September 2002
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
International Journal of Information Theories and Applications, IJITA,
9(2), 2002.
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
Procs of the 27th International Conference on Information and Communication Technologies and Programming, ICT&P'2002,
Primorsko, Bulgaria, June 24-29, 2002
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Ontologies,
Procs of 14th International Conference on Advanced Information Systems Engineering, CAiSE'2002(short paper),
Toronto, Canada, May 11-12, 2002.
Nicolas Spyratos, Yannis Tzitzikas and V. Christofides
On Personalizing the Catalogs of Web Portals,
Procs of 15th International FLAIRS Conference, FLAIRS'2002,
Pensacola, Florida, May 2002
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Translation for Mediators over Ontology-based Information Sources,
Procs of 2nd Hellenic Conference on Artificial Intelligence, SETN'2002,
Thessaloniki, Greece, April 11-12, 2002.

2001

Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Mediators over Ontology-based Information Sources,
Procs of 2nd International Conference on Web Information Systems Engineering, WISE'2001,
Kyoto, Japan, Dec 2001
Yannis Tzitzikas
Democratic Data Fusion for Information Retrieval Mediators,
Procs of ACS/IEEE International Conference on Computer Systems and Applications, AICCSA'2001,
Beirut, Lebanon, June 26-29, 2001
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Deriving Valid Expressions from Ontology Definitions,
Procs of the 11th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’2001,
(also published in Information Modelling and Knowledge Bases XIII, IOS PRESS Amsterdam 2002)
Maribor, Slovenia, 29 May-1 June, 2001
Yannis Tzitzikas and Panos Constantopoulos
A Decision-theoretic Model for Information Retrieval Supporting Time Constraints,
Procs of the BCS-IRSG European Colloquium on IR Research, ECIR’2001,
Darmstadt, Germany, April 4-6, 2001

Before 2001

Panos Constantopoulos and Yannis Tzitzikas
Context-Driven Information Base Update,
Procs of the 8th International Conference on Advanced Information Systems Engineering, CAiSE'1996,
Heraklion, Crete, Greece, May 20-24, 1996
Yannis Tzitzikas
Exploiting Semantic Networks to Generate Hypermedia,
Procs of the 3rd Doctoral Consortium on Advanced Information Systems Engineering, CAiSE'1996,
Heraklion, Crete, Greece, May 20-21 1996
Panos Constantopoulos, Yannis Tzitzikas and M. Theodorakis
Developing Hypermedia Over an Information Repository,
Procs of the 2nd WorkShop on Open Hypermedia Systems at Hypertext96, OHS'1996,
Washington DC, USA, March 16-20 1996
Yannis Tzitzikas
View Updates in Knowledge Bases,
Master's Thesis, CS Dep., University of Crete
Technical Report FORTH-ICS-TR-142, October 1995 (in greek)

By publication type

Refereed Book Chapters

Dimitris Kotzinos, Giorgos Flouris, Yannis Tzitzikas, Dimitris Andreou, Vassilis Christophides
Supporting Evolution of Knowledge Artifacts in Web Based Learning Environments,
in Solutions and Innovations in Web-Based Technologies for Augmented Learning: Improved Platforms, Tools and Applications, (Series Title: Advances in Web-Based Learning), (accepted for publication), 2008
Nicolas Spyratos and Yannis Tzitzikas
Searching,
Wiley Encyclopedia of Electrical and Electronics Engineering
John Wiley & Sons

Refereed International Journals

M. Theodoridou, Y. Tzitzikas, M. Doerr, Y. Marketakis, V. Melesssanakis,
Modeling and Querying Provenance by Extending CIDOC CRM ,
J. Distributed and Parallel Databases (J. DAPD) , Special Issue Provenance in Scientific Databases (to appear in 2010)
Yannis Theoharis, Yannis Tzitzikas, Dimitris Kotzinos and Vassilis Christophides
On Graph Features of Semantic Web Schemas,
IEEE Transactions on Knowledge and Data Engineering, 2008
Carlo Meghini, Nicolas Spyratos and Yannis Tzitzikas
Abduction for Accessing Information Sources,
Journal Foundamenta Informaticae, (83), 2008
Yannis Tzitzikas,
Evolution of Faceted Taxonomies and CTCA Expressions ,
KAIS Journal, 13(3), 2007
Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos,
An Algebra for Specifying Valid Compound Terms in Faceted Taxonomies ,
Journal on Data and Knowledge Engineering (DKE), 62(1), 2007.
Yannis Tzitzikas, Dimitris Kotzinos and Yannis Theoharis,
On Ranking RDF Schema Elements (and its Application in Visualization) ,
Journal of Universal Computer Science (JUCS), Special Issue: Ontologies and Their Applications, Nov 2007
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning,
International Journal of Web-based Learning and Teaching Technologies ( IJWLTT ) (accepted for publication).
Yannis Tzitzikas,
An Algebraic Method for Compressing Symbolic Data Tables ,
Journal on Intelligent Data Analysis, 10(4), 2006.
Yannis Tzitzikas, Carlo Meghini and Nicolas Spyratos,
A Unified Interaction Scheme for Information Sources ,
Journal of Intelligent Information Systems (JIIS), 26(1), January 2006.
Yannis Tzitzikas and Anastasia Analyti,
Mining the Meaningful Term Conjunctions from Materialised Faceted Taxonomies: Algorithms and Complexity ,
KAIS Journal, 9(4), 2006
Y.Tzitzikas, Nicolas Spyratos and Panos Constantopoulos,
Mediators over Taxonomy-based Information Sources,
VLDB Journal, 14(1), March 2005
Y.Tzitzikas, Anastasia Analyti and Nicolas Spyratos,
Compound Term Composition Algebra: The Semantics,
LNCS Journal on Data Semantics Volume 2, January 2005
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
International Journal of Information Theories and Applications, IJITA,
9(2), 2002.

Refereed International Conferences

Panagiotis Papadakos, Stella Kopidaki, Nikos Armenatzoglou and Yannis Tzitzikas
Exploratory Web Searching with Dynamic Taxonomies and Results Clustering,
Procs of the 13th European Conference on Digital Libraries (ECDL'09), Corfu, Greece, Sep-Oct 2009
(to be presented also at the 8th Hellenic Data Management Symposium - HDMS’09, August 2009, Athens Greece).
Stella Kopidaki, Panagiotis Papadakos and Yannis Tzitzikas
STC+ and HSTC: Two Novel Online Results Clustering Methods for Web Searching,
Procs of the 10th International Conference on Web Systems Engineering (WISE'09), Poznan, Poland, Oct 2009
Yannis Marketakis, Makis Tzanakis and Yannis Tzitzikas
PreScan: Towards Automating the Preservation of Digital Objects,
International ACM Conference on Management of Emergent Digital EcoSystems (MEDES'09), Lyon, France, Oct. 2009.
Anastasia Analyti, Yannis Tzitzikas and Nicolas Spyratos
Specifying Valid Compound Terms in Interrelated Faceted Taxonomies,
Procs of the 28th International Conference on Conceptual Modeling (ER'09), Gramado, Brazil, Nov 2009.
Yannis Tzitzikas, Yannis Theoharis and Dimitris Andreou
On Storage Policies for Semantic Web Repositories that Support Versioning,
Procs of the 5th European Semantic Web Conference (ESWC'08), Tenerife, Spain, June 2008
Yannis Tzitzikas, N. Armenatzoglou and P. Papadakos
FleXplorer: A Framework for Providing Faceted and Dynamic Taxonomy-based Information Exploration,
Procs of FIND'2008 (at DEXA '08), Turin, Italy, September 2008
Ioannis Roussidis, George Tzagkarakis, Dimitris Plexousakis and Yannis Tzitzikas
On a Probabilistic Combination of Prediction Sources,
17th International Symposium on Methodologies for Intelligent Systems (ISMIS'08), Toronto, Canada, May 20-23, 2008
Yannis Tzitzikas and Giorgos Flouris
Mind the (Intelligibility) Gap ,
Procs of 11th European Conference on Research and Advanced Technology for Digital Libraries, ECDL'2007, Budapest, Hungary, September 2007.
Yannis Tzitzikas,
Dependency Management for the Preservation of Digital Information ,
Procs of the 18th International Conference on Database and Expert Systems Applications, DEXA'2007, Regensburg, Germany, September 2007.
Yannis Tzitzikas and Yannis Theoharis,
Naming Functions for the Vector Space Model ,
Procs of the 29th European Conference on Information Retrieval, ECIR'2007, Rome, Italy, April 2007.
Dimitris Zeginis, Yannis Tzitzikas and Vassilis Christophides,
On the Foundations of Computing Deltas between RDF models ,
Procs of the 6th International Semantic Web Conference (ISWC'2007), Korea, Nov. 2007. (BEST PAPER AWARD)
Yannis Tzitzikas and Dimitris Kotzinos,
(Semantic Web) Evolution through Change Logs: Problems and Solutions ,
Procs of Artificial Intelligence and Applications, AIA’2007, Innsbruck, Austria, February 2007.
Yannis Tzitzikas and Anastasia Analyti,
Faceted Taxonomy-based Information Management ,
Procs of the International Workshop on Dynamic Taxonomies and Faceted Search, FIND'2007 (satellite workshop of DEXA'2007), Regensburg, Germany, September 2007
Yannis Tzitzikas,
On Preserving the Intelligibility of Digital Objects through Dependency Management ,
Procs of the International Conference PV'2007 (Ensuring the Long-Term Preservation and Value Adding to Scientific and Technical Data), Oberpfaffenhofen/Munich, Germany, October 2007.
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning ,
Procs of the First International Workshop on Building Technology Enhanced Learning solutions for Communities of Practice, TEL-CoPS'2006,
Heraklion, October 2006.
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and and N. Spyratos
Trialogical E-Learning and Emergent Knowledge Artifacts ,
Procs of the First European Conference on Technology Enhanced Learning, EC-TEL'2006, Heraklion, October 2006.
Yannis Tzitzikas and Jean-Luc Hainaut,
On the Visualization of Large-sized Ontologies ,
Procs of the 8th International Conference on Advanced Visual Interfaces, AVI'2006,
Venezia, May, 2006.
Yannis Tzitzikas and Jean-Luc Hainaut,
How to Tame a Very Large ER Diagram (using Link Analysis and Force-Directed Placement Algorithms) ,
Procs of 24th International Conference on Conceptual Modeling, ER'05,
Klagenfurt, Austria, October 2005.
Yannis Tzitzikas, R. Launonen, M. Hakkarainen, P. Kohonen, T. Leppanen, E. Simpanen, H. Tornroos, P. Uusitalo and P. Vanska
FASTAXON: A system for FAST (and Faceted) TAXONomy design,
Procs of the 23rd International. Conference. on Conceptual Modeling, ER’2004,
Shanghai, China, November 2004
Carlo Meghini and Yannis Tzitzikas
Querying Articulated Sources,
Procs of the 3rd International Conference on Ontologies, Databases and Applications of Semantics for Large Scale Information Systems, ODBASE’2004,
Larnaca, Cyprus, October 2004
Yannis Tzitzikas and Anastasia Analyti
Mining the Meaningful Compound Terms from Materialised Faceted Taxonomies,
Procs of the 3rd International Conference on Ontologies, Databases and Applications of Semantics for Large Scale Information Systems, ODBASE’2004,
Larnaca, Cyprus, October 2004
Yannis Tzitzikas
An Algebraic Method for Compressing Very Large Symbolic Data Tables,
Procs of the Workshop on Symbolic and Spatial Data Analysis of ECML/PKDD 2004, SSDA’2004,
Pisa, Italy, September 2004.
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos,
A Unifying Framework for Flexible Information Access in Taxonomy-based Sources,
Procs of the 6th International Conference on Flexible Query Answering Systems, FQAS’2004,
Lyon France, June 2004.
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos,
Towards a Generalized Interaction Scheme for Information Access,
Procs of the 3rd International Symposium on Foundations of Information and Knowledge Systems, FoIKS’2004,
Vienna Austria, February 2004.
Yannis Tzitzikas, Anastasia Analyti and Nicolas Spyratos,
The Semantics of the Compound Term Composition Algebra,
Procs of the 2nd International Conference on Ontologies, Databases and Applications of Semantics, ODBASE’2003,
Catania, Sicily, Italy, November 2003
Yannis Tzitzikas and Carlo Meghini
Query Evaluation in Peer-to-Peer Networks of Taxonomy-based Sources,
Procs of the 10th International Conference on Cooperative Information Systems, CoopIS’2003,
Catania, Sicily, Italy, November 2003
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos
Taxonomy-based Conceptual Modeling for Peer-to-Peer Networks,
Procs of the 22th International Conference on Conceptual Modeling, ER’2003,
Chicago, Illinois, October 2003
Carlo Meghini and Yannis Tzitzikas
Query Evaluation over Networks of Logic-based Mediators(POSITION PAPER),
Procs of the 7th International Workshop on Description Logics, DL’2003,
Rome, Italy, September 2003
Yannis Tzitzikas and Carlo Meghini
Ostensive Automatic Schema Mapping for Taxonomy-based Peer-to-Peer Systems,
Procs of the 7th International Workshop on Cooperative Information Agents, CIA’2003,
Helsinki, Finland, August 2003 (BEST PAPER AWARD)
Carlo Meghini, Yannis Tzitzikas and Nicolas Spyratos
An Abduction-based Method for Index Relaxation in Taxonomy-based Sources,
Procs of the 28th International Symposium on Mathematical Foundations of Computer Science, MFCS’2003,
Bratislava, Slovac Republic, August 2003
Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos
An Algebra for Specifying Compound Terms for Faceted Taxonomies,
Procs of the 13th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’2003,
(also published in Information Modelling and Knowledge Bases XV, IOS PRESS 2004)
Kitakyushu, Japan, June 2003
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Taxonomies for Web Catalogs,
Procs of the 3rd International Conference on Web Information Systems Engineering, WISE’2002,
Singapore, December, 2002
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
Procs of the 27th International Conference on Information and Communication Technologies and Programming, ICT&P'2002,
Primorsko, Bulgaria, June 24-29, 2002
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Ontologies,
Procs of 14th International Conference on Advanced Information Systems Engineering, CAiSE'2002(short paper),
Toronto, Canada, May 11-12, 2002.
Nicolas Spyratos, Yannis Tzitzikas and V. Christofides
On Personalizing the Catalogs of Web Portals,
Procs of 15th International FLAIRS Conference, FLAIRS'2002,
Pensacola, Florida, May 2002
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Mediators over Ontology-based Information Sources,
Procs of 2nd International Conference on Web Information Systems Engineering, WISE'2001,
Kyoto, Japan, Dec 2001
Yannis Tzitzikas
Democratic Data Fusion for Information Retrieval Mediators,
Procs of ACS/IEEE International Conference on Computer Systems and Applications, AICCSA'2001,
Beirut, Lebanon, June 26-29, 2001
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Deriving Valid Expressions from Ontology Definitions,
Procs of the 11th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’2001,
(also published in Information Modelling and Knowledge Bases XIII, IOS PRESS Amsterdam 2002)
Maribor, Slovenia, 29 May-1 June, 2001
Yannis Tzitzikas and Panos Constantopoulos
A Decision-theoretic Model for Information Retrieval Supporting Time Constraints,
Procs of the BCS-IRSG European Colloquium on IR Research, ECIR’2001,
Darmstadt, Germany, April 4-6, 2001
Panos Constantopoulos and Yannis Tzitzikas
Context-Driven Information Base Update,
Procs of the 8th International Conference on Advanced Information Systems Engineering, CAiSE'1996,
Heraklion, Crete, Greece, May 20-24, 1996
Yannis Tzitzikas
Exploiting Semantic Networks to Generate Hypermedia,
Procs of the 3rd Doctoral Consortium on Advanced Information Systems Engineering, CAiSE'1996,
Heraklion, Crete, Greece, May 20-21 1996
Panos Constantopoulos, Yannis Tzitzikas and M. Theodorakis
Developing Hypermedia Over an Information Repository,
Procs of the 2nd WorkShop on Open Hypermedia Systems at Hypertext96, OHS'1996,
Washington DC, USA, March 16-20 1996

Refereed National Conferences

Panagiotis Papadakos, Stella Kopidaki, Nikos Armenatzoglou and Yannis Tzitzikas
Exploratory Web Searching with Dynamic Taxonomies and Results Clustering,
8th Hellenic Data Management Symposium (HDMS’09), August 2009, Athens Greece.
P. Papadakos, Y. Theoharis, Y. Marketakis, N. Armenatzoglou and Y. Tzitzikas
Mitos: Design and Evaluation of a DBMS-based Web Search Engine,
Procs of 12th Pan-Hellenic Conference of Informatics (PCI'2008), Samos, Greece, August 2008
Dimitris Zeginis, Yannis Tzitzikas and Vassilis Christophides
On Computing Deltas of RDF/S Knowledge Bases,
Procs of the 7th Hellenic Data Management Symposium (HDMS'2008), Heraklion, Greece, July 2008
Yannis Tzitzikas, Yannis Theoharis and Dimitris Andreou
On Archiving and Versioning Semantic Web Data,
Procs of the 7th Hellenic Data Management Symposium (HDMS'2008), Heraklion, Greece, July 2008
Yannis Tzitzikas
Revising Faceted Taxonomies and CTCA Expressions,
Procs of 4th Hellenic Conference on Artificial Intelligence, SETN'2006,
Heraklion, Greece, May 2006.
Carlo Meghini, Yannis Tzitzikas and Nicolas Spyratos
Abduction for Extending Incomplete Information Sources,
Procs of 4th Hellenic Conference on Artificial Intelligence, SETN'2006,
Heraklion, Greece, May 2006.
Y Theoharis, V. Christophides and Y. Tzitzikas
On Graph Features of Semantic Web Schemas,
Procs of the 5th Hellenic Data Management Symposium, HDMS'2006,
Thessaloniki, Greece, September 2006.
Yannis Tzitzikas and Jean-Luc Hainaut,
Less is More: How to Tame a Very Large ER Diagram,
Procs of 4th Hellenic Data Management Symbosium, HDMS'05,
Athens, Greece, August 2005.
Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos and Panos Constantopoulos
An Algebraic Approach for Specifying Compound Terms in Faceted Taxonomies ,
Procs of the 2nd Hellenic Data Management Symposium, HDMS’2003,
Athens, Greece September, 2003
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Translation for Mediators over Ontology-based Information Sources,
Procs of 2nd Hellenic Conference on Artificial Intelligence, SETN'2002,
Thessaloniki, Greece, April 11-12, 2002.

Invited Publications

Yannis Tzitzikas and Carlo Meghini
Content-based Retrieval Services in Peer-to-Peer Systems using Taxonomies,
ERCIM News,
Volume 53, April 2003
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos and Anastasia Analyti
Extended Faceted Taxonomies for Web Catalogs,
ERCIM News,
Volume 51, October 2002 (special issue: Semantic Web)

Technical Reports and Thesis

Panagiotis Papadakos, Yannis Theoharis, Nikos Armenatzoglou and Yannis Tzitzikas
Object-Relational Database Representations for Text Indexing,
CoRR, Information Retrieval, arXiv:0906.3112v1 [cs.IR], June 2009
P. Papadakos, G. Vasiliadis, Y. Theoharis, N. Armenatzoglou, S. Kopidaki, Y. Marketakis, M. Daskalakis, K. Karamaroudis, G. Linardakis, G. Makrydakis, V. Papathanasiou, L. Sardis, P. Tsialiamanis, G. Troullinou, K. Vandikas, D. Velegrakis and Y. Tzitzikas
The Anatomy of Mitos Web Search Engine,
CoRR, Information Retrieval, abs/0803.2220, 2008
Carlo Meghini, Yannis Tzitzikas and Anastasia Analyti,
Query Evaluation in P2P Systems of Taxonomy-based Sources: Algorithms, Complexity, and Optimizations ,
CoRR arXiv:0709.3034v1 [cs.DB], 2007
Yannis Tzitzikas and Nicolas Spyratos
Result Fusion by Mediators Using Voting and Utility Functions,
CNRS-Universite de Paris Sud, Laboratoire de Recherche en Informatique
Rapport de Recherche No 1332, Sep 2002
Yannis Tzitzikas
Collaborative Ontology-based Information Indexing and Retrieval,
PhD Thesis, Department of Computer Science, University of Crete,
September 2002
Yannis Tzitzikas
View Updates in Knowledge Bases,
Master's Thesis, CS Dep., University of Crete
Technical Report FORTH-ICS-TR-142, October 1995 (in greek)

Edited Collections

Book: Giovanni Maria Saco and Yannis Tzitzikas (Eds)
Dynamic Taxonomies and Faceted Search: Theory, Practice and Experience, Springer, 2009
Carlo Meghini, Nicolas Spyratos and Yannis Tzitzikas (Editors)
Procs of the 1st International Workshop on Peer-to-Peer Computing and Databases, P2P&DB 2004,
(at EDBT'2004) Heraklion, Crete - Greece, March 14, 2004. (online version)

By topic (plus LINKS)

Faceted Classification, Taxonomies and CTCA

Information Integration (Mediators, P2P Systems)

Carlo Meghini, Yannis Tzitzikas and Anastasia Analyti,
Query Evaluation in P2P Systems of Taxonomy-based Sources: Algorithms, Complexity, and Optimizations ,
CoRR arXiv:0709.3034v1 [cs.DB], 2007
Y.Tzitzikas, Nicolas Spyratos and Panos Constantopoulos,
Mediators over Taxonomy-based Information Sources,
VLDB Journal, 14(1), March 2005
Carlo Meghini and Yannis Tzitzikas
Querying Articulated Sources,
Procs of the 3rd International Conference on Ontologies, Databases and Applications of Semantics for Large Scale Information Systems, ODBASE’2004,
Larnaca, Cyprus, October 2004
Carlo Meghini, Nicolas Spyratos and Yannis Tzitzikas (Editors)
Procs of the 1st International Workshop on Peer-to-Peer Computing and Databases, P2P&DB 2004,
(at EDBT'2004) Heraklion, Crete - Greece, March 14, 2004. (online version)
Yannis Tzitzikas and Carlo Meghini
Query Evaluation in Peer-to-Peer Networks of Taxonomy-based Sources,
Procs of the 10th International Conference on Cooperative Information Systems, CoopIS’2003,
Catania, Sicily, Italy, November 2003
Yannis Tzitzikas, Carlo Meghini, and Nicolas Spyratos
Taxonomy-based Conceptual Modeling for Peer-to-Peer Networks,
Procs of the 22th International Conference on Conceptual Modeling, ER’2003,
Chicago, Illinois, October 2003
Carlo Meghini and Yannis Tzitzikas
Query Evaluation over Networks of Logic-based Mediators(POSITION PAPER),
Procs of the 7th International Workshop on Description Logics, DL’2003,
Rome, Italy, September 2003
Yannis Tzitzikas and Carlo Meghini
Ostensive Automatic Schema Mapping for Taxonomy-based Peer-to-Peer Systems,
Procs of the 7th International Workshop on Cooperative Information Agents, CIA’2003,
Helsinki, Finland, August 2003 (BEST PAPER AWARD)
Yannis Tzitzikas and Carlo Meghini
Content-based Retrieval Services in Peer-to-Peer Systems using Taxonomies,
ERCIM News,
Volume 53, April 2003
Yannis Tzitzikas, Nicolas Spyratos, Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
International Journal of Information Theories and Applications, IJITA,
9(2), 2002.
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Evaluation for Mediators over Web Catalogs,
Procs of the 27th International Conference on Information and Communication Technologies and Programming, ICT&P'2002,
Primorsko, Bulgaria, June 24-29, 2002
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Query Translation for Mediators over Ontology-based Information Sources,
Procs of 2nd Hellenic Conference on Artificial Intelligence, SETN'2002,
Thessaloniki, Greece, April 11-12, 2002.
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Mediators over Ontology-based Information Sources,
Procs of 2nd International Conference on Web Information Systems Engineering, WISE'2001,
Kyoto, Japan, Dec 2001

Automatic Constuction of Ontology Mappings

Yannis Tzitzikas and Carlo Meghini
Ostensive Automatic Schema Mapping for Taxonomy-based Peer-to-Peer Systems,
Procs of the 7th International Workshop on Cooperative Information Agents, CIA’2003,
Helsinki, Finland, August 2003 (BEST PAPER AWARD)

Yannis Marketakis, Makis Tzanakis and Yannis Tzitzikas
PreScan: Towards Automating the Preservation of Digital Objects,
International ACM Conference on Management of Emergent Digital EcoSystems (MEDES'09), Lyon, France, Oct. 2009.
Ioannis Roussidis, George Tzagkarakis, Dimitris Plexousakis and Yannis Tzitzikas
On a Probabilistic Combination of Prediction Sources,
17th International Symposium on Methodologies for Intelligent Systems (ISMIS'08), Toronto, Canada, May 20-23, 2008
Dimitris Kotzinos, Giorgos Flouris, Yannis Tzitzikas, Dimitris Andreou, Vassilis Christophides
Supporting Evolution of Knowledge Artifacts in Web Based Learning Environments,
in Solutions and Innovations in Web-Based Technologies for Augmented Learning: Improved Platforms, Tools and Applications, (Series Title: Advances in Web-Based Learning), (accepted for publication), 2008
Yannis Tzitzikas and Giorgos Flouris
Mind the (Intelligibility) Gap ,
Procs of 11th European Conference on Research and Advanced Technology for Digital Libraries, ECDL'2007, Budapest, Hungary, September 2007.
Yannis Tzitzikas,
Dependency Management for the Preservation of Digital Information ,
Procs of the 18th International Conference on Database and Expert Systems Applications, DEXA'2007, Regensburg, Germany, September 2007.
Yannis Tzitzikas,
On Preserving the Intelligibility of Digital Objects through Dependency Management ,
Procs of the International Conference PV'2007 (Ensuring the Long-Term Preservation and Value Adding to Scientific and Technical Data), Oberpfaffenhofen/Munich, Germany, October 2007.
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning,
International Journal of Web-based Learning and Teaching Technologies ( IJWLTT ) (accepted for publication).
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis and N. Spyratos
Emergent Knowledge Artifacts for Supporting Trialogical E-Learning ,
Procs of the First International Workshop on Building Technology Enhanced Learning solutions for Communities of Practice, TEL-CoPS'2006,
Heraklion, October 2006.
Yannis Tzitzikas, V. Christophides, G. Flouris, D. Kotzinos, H. Markkanen, D. Plexousakis,
Trialogical E-Learning and Emergent Knowledge Artifacts ,
Procs of the First European Conference on Technology Enhanced Learning, EC-TEL'2006, Heraklion, October 2006.
Nicolas Spyratos and Yannis Tzitzikas
Searching,
Wiley Encyclopedia of Electrical and Electronics Engineering
John Wiley & Sons
Nicolas Spyratos, Yannis Tzitzikas and V. Christofides
On Personalizing the Catalogs of Web Portals,
Procs of 15th International FLAIRS Conference, FLAIRS'2002,
Pensacola, Florida, May 2002
Yannis Tzitzikas, Nicolas Spyratos and Panos Constantopoulos
Deriving Valid Expressions from Ontology Definitions,
Procs of the 11th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’2001,
(also published in Information Modelling and Knowledge Bases XIII, IOS PRESS Amsterdam 2002)
Maribor, Slovenia, 29 May-1 June, 2001
Panos Constantopoulos and Yannis Tzitzikas
Context-Driven Information Base Update,
Procs of the 8th International Conference on Advanced Information Systems Engineering, CAiSE'1996,
Heraklion, Crete, Greece, May 20-24, 1996

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Publications of Yannis Tzitzikas

By year

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Refereed Book Chapters

Refereed International Journals

Refereed International Conferences

Refereed National Conferences

Invited Publications

Technical Reports and Thesis

Edited Collections

By topic (plus LINKS)

Faceted Classification, Taxonomies and CTCA

Related Links:

Information Integration (Mediators, P2P Systems)

Automatic Constuction of Ontology Mappings

On Information Access, Retrieval and Visualization

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Meta Ranking

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Semantic Networks and Hypermedia (including Semantic Web)

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