Yannis Tzitzikas

Orcid: 0000-0001-8847-2130

Affiliations:
  • Foundation for Research & Technology - Hellas, Greece


According to our database1, Yannis Tzitzikas authored at least 189 papers between 1996 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

Legend:

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Bibliography

2024
A Pipeline for Validating ChatGPT Responses Using Knowledge Graphs and Embeddings.
ERCIM News, 2024

2023
SoundexGR: An algorithm for phonetic matching for the Greek language.
Nat. Lang. Eng., September, 2023

A workflow model for holistic data management and semantic interoperability in quantitative archival research.
Digit. Scholarsh. Humanit., August, 2023

ChatGPT Responses Validation through Knowledge Graphs.
ERCIM News, 2023

Validating ChatGPT Facts through RDF Knowledge Graphs and Sentence Similarity.
CoRR, 2023

Why We Need Ontology-Specific Data Portals: A Case Study for CIDOC-CRM.
Proceedings of the International Workshop on Semantic Web and Ontology Design for Cultural Heritage co-located with the International Semantic Web Conference 2023 (ISWC 2023), 2023

Real-Time Validation of ChatGPT Facts using RDF Knowledge Graphs.
Proceedings of the ISWC 2023 Posters, 2023

Using Multiple RDF Knowledge Graphs for Enriching ChatGPT Responses.
Proceedings of the Machine Learning and Knowledge Discovery in Databases: Applied Data Science and Demo Track, 2023

FastCat Catalogues: Interactive Entity-Based Exploratory Analysis of Archival Documents.
Proceedings of the ACM/IEEE Joint Conference on Digital Libraries, 2023

Evaluating a Radius-based Pipeline for Question Answering over Cultural (CIDOC-CRM based) Knowledge Graphs.
Proceedings of the 34th ACM Conference on Hypertext and Social Media, 2023

RDF-Analytics: Interactive Analytics over RDF Knowledge Graphs.
Proceedings of the Proceedings 26th International Conference on Extending Database Technology, 2023

Demonstrating Interactive SPARQL Formulation through Positive and Negative Examples and Feedback.
Proceedings of the Proceedings 26th International Conference on Extending Database Technology, 2023

2022
A spiral-like method to place in the space (and interact with) too many values.
J. Intell. Inf. Syst., 2022

Estimating the Cost of Executing Link Traversal based SPARQL Queries.
CoRR, 2022

FS2KG: From File Systems to Knowledge Graphs (Demo).
Proceedings of the ISWC 2022 Posters, 2022

Demonstration of LODChain: How to Tackle the Problem of Low Connectivity for your RDF Dataset.
Proceedings of the ISWC 2022 Posters, 2022

LODChain: Strengthen the Connectivity of Your RDF Dataset to the Rest LOD Cloud.
Proceedings of the Semantic Web - ISWC 2022, 2022

Bilingual Question Answering over DBpedia Abstracts through Machine Translation and BERT.
Proceedings of the Workshop on Deep Learning for Knowledge Graphs (DL4KG 2022) co-located with the 21th International Semantic Web Conference (ISWC 2022), 2022

A Reconciliation Framework for the Integration of Stocks and Fisheries Information.
Proceedings of the 10th International Conference on Information and Communication Technologies in Agriculture, 2022

2021
FAST CAT: Collaborative Data Entry and Curation for Semantic Interoperability in Digital Humanities.
ACM Journal on Computing and Cultural Heritage, 2021

RDFsim: Similarity-Based Browsing over DBpedia Using Embeddings.
Inf., 2021

What process can a university follow for open data? The University of Crete case.
Int. J. Metadata Semant. Ontologies, 2021

Applying cross-data set identity reasoning for producing URI embeddings over hundreds of RDF data sets.
Int. J. Metadata Semant. Ontologies, 2021

A workflow for supporting the evolution requirements of RDF-based semantic warehouses.
Int. J. Metadata Semant. Ontologies, 2021

Towards Semantic Interoperability in Historical Research: Documenting Research Data and Knowledge with Synthesis.
CoRR, 2021

Towards Interactive Analytics over RDF Graphs.
Algorithms, 2021

ClaimLinker: Linking Text to a Knowledge Graph of Fact-checked Claims.
Proceedings of the Companion of The Web Conference 2021, 2021

How Your Cultural Dataset is Connected to the Rest Linked Open Data?
Proceedings of the Trandisciplinary Multispectral Modelling and Cooperation for the Preservation of Cultural Heritage, 2021

Open Domain Question Answering over Knowledge Graphs Using Keyword Search, Answer Type Prediction, SPARQL and Pre-trained Neural Models.
Proceedings of the Semantic Web - ISWC 2021 - 20th International Semantic Web Conference, 2021

Towards Semantic Interoperability inHistorical Research: Documenting Research Data and Knowledge withSynthesis.
Proceedings of the Semantic Web - ISWC 2021 - 20th International Semantic Web Conference, 2021

Chattack: A Gamified Crowd-Sourcing Platform for Tagging Deceptive & Abusive Behaviour.
Proceedings of the Advances in Information Retrieval, 2021

2020
Faceted Search with Object Ranking and Answer Size Constraints.
ACM Trans. Inf. Syst., 2020

A survey on question answering systems over linked data and documents.
J. Intell. Inf. Syst., 2020

Content-based Union and Complement Metrics for Dataset Search over RDF Knowledge Graphs.
ACM J. Data Inf. Qual., 2020

Reinforcing Fisheries Management through Semantic Data Integration.
ERCIM News, 2020

Keyword Search over RDF: Is a Single Perspective Enough?
Big Data Cogn. Comput., 2020

NLP for the Greek Language: A Brief Survey.
Proceedings of the SETN 2020: 11th Hellenic Conference on Artificial Intelligence, 2020

Two-stage Semantic Answer Type Prediction for Question Answering using BERT and Class-Specificity Rewarding.
Proceedings of the SeMantic AnsweR Type prediction task (SMART) at ISWC 2020 Semantic Web Challenge co-located with the 19th International Semantic Web Conference (ISWC 2020), 2020

How Can a University Take Its First Steps in Open Data?
Proceedings of the Metadata and Semantic Research - 14th International Conference, 2020

On the Evolution of Semantic Warehouses: The Case of Global Record of Stocks and Fisheries.
Proceedings of the Metadata and Semantic Research - 14th International Conference, 2020

$\mathtt{LODsyndesis}_{IE}$: Entity Extraction from Text and Enrichment Using Hundreds of Linked Datasets.
Proceedings of the Semantic Web: ESWC 2020 Satellite Events - ESWC 2020 Satellite Events, Heraklion, Crete, Greece, May 31, 2020

Elas4RDF: Multi-perspective Triple-Centered Keyword Search over RDF Using Elasticsearch.
Proceedings of the Semantic Web: ESWC 2020 Satellite Events - ESWC 2020 Satellite Events, Heraklion, Crete, Greece, May 31, 2020

Keyword Search over RDF Using Document-Centric Information Retrieval Systems.
Proceedings of the Semantic Web - 17th International Conference, 2020

2019
Preference-Enriched Faceted Search for Voting Aid Applications.
IEEE Trans. Emerg. Top. Comput., 2019

Large-scale Semantic Integration of Linked Data: A Survey.
ACM Comput. Surv., 2019

CS563-QA: A Collection for Evaluating Question Answering Systems.
CoRR, 2019

CPOI: A Compact Method to Archive Versioned RDF Triple-Sets.
CoRR, 2019

Crowd-Sourced Collection of Task-Oriented Human-Human Dialogues in a Multi-domain Scenario.
Proceedings of the Text, Speech, and Dialogue - 22nd International Conference, 2019

How many and what types of SPARQL queries can be answered through zero-knowledge link traversal?
Proceedings of the 34th ACM/SIGAPP Symposium on Applied Computing, 2019

Knowledge Graph Embeddings over Hundreds of Linked Datasets.
Proceedings of the Metadata and Semantic Research - 13th International Conference, 2019

Extending Faceted Search with Automated Object Ranking.
Proceedings of the Metadata and Semantic Research - 13th International Conference, 2019

Analytics over RDF Graphs.
Proceedings of the Information Search, Integration, and Personalization, 2019

Enabling Efficient Question Answering over Hundreds of Linked Datasets.
Proceedings of the Information Search, Integration, and Personalization, 2019

2018
Scalable Methods for Measuring the Connectivity and Quality of Large Numbers of Linked Datasets.
ACM J. Data Inf. Qual., 2018

High Performance Methods for Linked Open Data Connectivity Analytics.
Inf., 2018

LODsyndesis: The Biggest Knowledge Graph of the Linked Open Data Cloud that Includes all Inferred Equivalence Relationships.
ERCIM News, 2018

Facetize: An Interactive Tool for Cleaning and Transforming Datasets for Facilitating Exploratory Search.
CoRR, 2018

Spoken Dialogue for Information Navigation.
Proceedings of the 19th Annual SIGdial Meeting on Discourse and Dialogue, 2018

Heuristics-based Query Reordering for Federated Queries in SPARQL 1.1 and SPARQL-LD.
Proceedings of the 3rd International Workshop on Geospatial Linked Data and the 2nd Workshop on Querying the Web of Data co-located with 15th Extended Semantic Web Conference (ESWC 2018), 2018

On Finding the Relevant User Reviews for Advancing Conversational Faceted Search.
Proceedings of 4th Workshop on Sentic Computing, 2018

An Interactive 3D Visualization for the LOD Cloud.
Proceedings of the Workshops of the EDBT/ICDT 2018 Joint Conference (EDBT/ICDT 2018), 2018

Cinderella's Stick - A Fairy Tale for Digital Preservation
Springer, ISBN: 978-3-319-98487-2, 2018

2017
Radius-aware approximate blank node matching using signatures.
Knowl. Inf. Syst., 2017

Faceted exploration of RDF/S datasets: a survey.
J. Intell. Inf. Syst., 2017

Stochastic reranking of biomedical search results based on extracted entities.
J. Assoc. Inf. Sci. Technol., 2017

Services for Large Scale Semantic Integration of Data.
ERCIM News, 2017

LD-SDS: Towards an Expressive Spoken Dialogue System based on Linked-Data.
CoRR, 2017

PFSgeo: Preference-Enriched Faceted Search for Geographical Data.
Proceedings of the On the Move to Meaningful Internet Systems. OTM 2017 Conferences, 2017

Methods and Tools for Supporting the Integration of Stocks and Fisheries.
Proceedings of the Information and Communication Technologies in Modern Agricultural Development, 2017

Towards a Global Record of Stocks and Fisheries.
Proceedings of the 8th International Conference on Information and Communication Technologies in Agriculture, 2017

How Linked Data can Aid Machine Learning-Based Tasks.
Proceedings of the Research and Advanced Technology for Digital Libraries, 2017

2016
On Measuring the Lattice of Commonalities Among Several Linked Datasets.
Proc. VLDB Endow., 2016

Quantifying the Connectivity of a Semantic Warehouse and Understanding its Evolution over Time.
Int. J. Semantic Web Inf. Syst., 2016

Using preference-enriched faceted search for species identification.
Int. J. Metadata Semant. Ontologies, 2016

Comparing the effectiveness of intentional preferences versus preferences over specific choices: a user study.
Int. J. Inf. Decis. Sci., 2016

Querying the Web of Data with SPARQL-LD.
Proceedings of the Research and Advanced Technology for Digital Libraries, 2016

2015
Unifying heterogeneous and distributed information about marine species through the top level ontology MarineTLO.
Program, 2015

Type-Ahead Exploratory Search through Typo and Word Order Tolerant Autocompletion.
J. Web Eng., 2015

Assisting digital interoperability and preservation through advanced dependency reasoning.
Int. J. Digit. Libr., 2015

Answering keyword queries through cached subqueries in best match retrieval models.
J. Intell. Inf. Syst., 2015

Exploiting Linked Data for Open and Configurable Named Entity Extraction.
Int. J. Artif. Intell. Tools, 2015

Entity-based Stochastic Analysis of Search Results for Query Expansion and Results Re-Ranking.
Proceedings of The Twenty-Fourth Text REtrieval Conference, 2015

SPARQL-LD: a SPARQL Extension for Fetching and Querying Linked Data.
Proceedings of the ISWC 2015 Posters & Demonstrations Track co-located with the 14th International Semantic Web Conference (ISWC-2015), 2015

Species Identification Through Preference-Enriched Faceted Search.
Proceedings of the Metadata and Semantics Research - 9th Research Conference, 2015

2014
Report on the 3rd MUMIA Training School on Information Retrieval and Interactive Information Access, July 21-25, 2014, FORTH, Heraklion, Crete, Greece.
SIGIR Forum, 2014

Curating the Specificity of Ontological Descriptions under Ontology Evolution.
J. Data Semant., 2014

A case study on propagating and updating provenance information using the CIDOC CRM.
Int. J. Digit. Libr., 2014

Enriching Textual Search Results at Query Time Using Entity Mining, Linked Data and Link Analysis.
Int. J. Semantic Comput., 2014

Ontology-based Integration of Heterogeneous and Distributed Information of the Marine Domain.
ERCIM News, 2014

Scalable entity-based summarization of web search results using MapReduce.
Distributed Parallel Databases, 2014

Tasks that Require, or can Benefit from, Matching Blank Nodes.
CoRR, 2014

Configuring Named Entity Extraction through Real-Time Exploitation of Linked Data.
Proceedings of the 4th International Conference on Web Intelligence, 2014

Post-analysis of Keyword-Based Search Results Using Entity Mining, Linked Data, and Link Analysis at Query Time.
Proceedings of the 2014 IEEE International Conference on Semantic Computing, 2014

Epimenides: An information system offering automated reasoning for the needs of digital preservation.
Proceedings of the IEEE/ACM Joint Conference on Digital Libraries, 2014

Epimenides: Interoperability Reasoning for Digital Preservation.
Proceedings of the 11th International Conference on Digital Preservation, 2014

MatWare : Constructing and Exploiting Domain Specific Warehouses by Aggregating Semantic Data.
Proceedings of the Semantic Web: Trends and Challenges - 11th International Conference, 2014

Extending VoID for Expressing Connectivity Metrics of a Semantic Warehouse.
Proceedings of the 1st International Workshop on Dataset PROFIling & fEderated Search for Linked Data co-located with the 11th Extended Semantic Web Conference, 2014

Generating Synthetic RDF Data with Connected Blank Nodes for Benchmarking.
Proceedings of the Semantic Web: Trends and Challenges - 11th International Conference, 2014

Quantifying the Connectivity of a Semantic Warehouse.
Proceedings of the Workshops of the EDBT/ICDT 2014 Joint Conference (EDBT/ICDT 2014), 2014

Hippalus: Preference-enriched Faceted Exploration.
Proceedings of the Workshops of the EDBT/ICDT 2014 Joint Conference (EDBT/ICDT 2014), 2014

Exploratory Professional Search through Semantic Post-Analysis of Search Results.
Proceedings of the Professional Search in the Modern World, 2014

2013
Interactive Exploration of Multi-Dimensional and Hierarchical Information Spaces with Real-Time Preference Elicitation.
Fundam. Informaticae, 2013

A Simple Method to Produce Algorithmic MIDI Music based on Randomness, Simple Probabilities and Multi-Threading.
CoRR, 2013

X-ENS: semantic enrichment of web search results at real-time.
Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval, 2013

Integrating Heterogeneous and Distributed Information about Marine Species through a Top Level Ontology.
Proceedings of the Metadata and Semantics Research - 7th Research Conference, 2013

Interoperability Objectives and Approaches: Results from the APARSEN NoE.
Proceedings of the 10th International Conference on Digital Preservation, 2013

2012
Star-like auto-configurable layouts of variable radius for visualizing and exploring RDF/S ontologies.
J. Vis. Lang. Comput., 2012

On exploiting static and dynamically mined metadata for exploratory web searching.
Knowl. Inf. Syst., 2012

Information Carriers and Identification of Information Objects: An Ontological Approach
CoRR, 2012

Scalable, flexible and generic instant overview search.
Proceedings of the 21st World Wide Web Conference, 2012

An Interactive Exploratory System with Real-Time Preference Elicitation.
Proceedings of the Web Information Systems Engineering - WISE 2012, 2012

Blank Node Matching and RDF/S Comparison Functions.
Proceedings of the Semantic Web - ISWC 2012, 2012

Demonstrating Blank Node Matching and RDF/S Comparison Functions.
Proceedings of the ISWC 2012 Posters & Demonstrations Track, 2012

Web Searching with Entity Mining at Query Time.
Proceedings of the Multidisciplinary Information Retrieval, 2012

Conversion and Emulation-aware Dependency Reasoning for Curation Services.
Proceedings of the 9th International Conference on Digital Preservation, 2012

Curating the Specificity of Metadata while World Models Evolve.
Proceedings of the 9th International Conference on Digital Preservation, 2012

Towards a Long-term Preservation Infrastructure for Earth Science Data.
Proceedings of the 9th International Conference on Digital Preservation, 2012

Evolution of Workflow Provenance Information in the Presence of Custom Inference Rules.
Proceedings of the Workshop on Semantic Web for Provenance Management, 2012

2011
On Computing Deltas of RDF/S Knowledge Bases.
ACM Trans. Web, 2011

Query processing in distributed, taxonomy-based information sources
CoRR, 2011

Similarity-based Browsing over Linked Open Data
CoRR, 2011

Exploiting Available Memory and Disk for Scalable Instant Overview Search.
Proceedings of the Web Information System Engineering - WISE 2011, 2011

Interactive Exploration of Fuzzy RDF Knowledge Bases.
Proceedings of the Semantic Web: Research and Applications, 2011

2010
Automating the Ingestion and Transformation of Embedded Metadata.
ERCIM News, 2010

Knowledge Management for Digital Preservation.
ERCIM News, 2010

Modeling and querying provenance by extending CIDOC CRM.
Distributed Parallel Databases, 2010

Task-Based Dependency Management for the Preservation of Digital Objects Using Rules.
Proceedings of the Artificial Intelligence: Theories, 2010

Advancing Search Query Autocompletion Services with More and Better Suggestions.
Proceedings of the Web Engineering, 10th International Conference, 2010

StarLion: Auto-configurable Layouts for Exploring Ontologies.
Proceedings of the Semantic Web: Research and Applications, 2010

2009
Dependency management for digital preservation using semantic web technologies.
Int. J. Digit. Libr., 2009

On Providing Intelligibility-Aware Preservation Services for Digital Objects.
Data Sci. J., 2009

Object-Relational Database Representations for Text Indexing
CoRR, 2009

STC+ and NM-STC: Two Novel Online Results Clustering Methods for Web Searching.
Proceedings of the Web Information Systems Engineering, 2009

PreScan: towards automating the preservation of digital objects.
Proceedings of the MEDES '09: International ACM Conference on Management of Emergent Digital EcoSystems, 2009

Exploratory Web Searching with Dynamic Taxonomies and Results Clustering.
Proceedings of the Research and Advanced Technology for Digital Libraries, 2009

Specifying Valid Compound Terms in Interrelated Faceted Taxonomies.
Proceedings of the Conceptual Modeling, 2009

Engineering Taxonomy-Based Sources.
Proceedings of the Dynamic Taxonomies and Faceted Search: Theory, 2009

Faceted Taxonomy-Based Sources.
Proceedings of the Dynamic Taxonomies and Faceted Search: Theory, 2009

System Implementation.
Proceedings of the Dynamic Taxonomies and Faceted Search: Theory, 2009

Conclusions.
Proceedings of the Dynamic Taxonomies and Faceted Search: Theory, 2009

Comparison with Other Techniques.
Proceedings of the Dynamic Taxonomies and Faceted Search: Theory, 2009

2008
On Graph Features of Semantic Web Schemas.
IEEE Trans. Knowl. Data Eng., 2008

Abduction for Accessing Information Sources.
Fundam. Informaticae, 2008

The Anatomy of Mitos Web Search Engine
CoRR, 2008

Mitos: Design and Evaluation of a DBMS-Based Web Search Engine.
Proceedings of the Panhellenic Conference on Informatics, 2008

On a Probabilistic Combination of Prediction Sources.
Proceedings of the Foundations of Intelligent Systems, 17th International Symposium, 2008

On Storage Policies for Semantic Web Repositories That Support Versioning.
Proceedings of the Semantic Web: Research and Applications, 2008

FleXplorer: A Framework for Providing Faceted and Dynamic Taxonomy-Based Information Exploration.
Proceedings of the 19th International Workshop on Database and Expert Systems Applications (DEXA 2008), 2008

2007
Evolution of faceted taxonomies and CTCA expressions.
Knowl. Inf. Syst., 2007

On Ranking RDF Schema Elements (and its Application in Visualization).
J. Univers. Comput. Sci., 2007

Emergent Knowledge Artifacts for Supporting Trialogical E-Learning.
Int. J. Web Based Learn. Teach. Technol., 2007

An algebra for specifying valid compound terms in faceted taxonomies.
Data Knowl. Eng., 2007

Query Evaluation in P2P Systems of Taxonomy-based Sources: Algorithms, Complexity, and Optimizations
CoRR, 2007

On the Foundations of Computing Deltas Between RDF Models.
Proceedings of the Semantic Web, 2007

Mind the (Intelligibility) Gap.
Proceedings of the Research and Advanced Technology for Digital Libraries, 2007

Naming Functions for the Vector Space Model.
Proceedings of the Advances in Information Retrieval, 2007

Faceted Taxonomy-based Information Management.
Proceedings of the 18th International Workshop on Database and Expert Systems Applications (DEXA 2007), 2007

Dependency Management for the Preservation of Digital Information.
Proceedings of the Database and Expert Systems Applications, 18th International Conference, 2007

(Semantic web) evolution through change logs: Problems and solutions.
Proceedings of the IASTED International Conference on Artificial Intelligence and Applications, 2007

2006
Mining the meaningful term conjunctions from materialised faceted taxonomies: algorithms and complexity.
Knowl. Inf. Syst., 2006

A unified interaction scheme for information sources.
J. Intell. Inf. Syst., 2006

An algebraic method for compressing symbolic data tables.
Intell. Data Anal., 2006

Revising Faceted Taxonomies and CTCA Expressions.
Proceedings of the Advances in Artificial Intelligence, 4th Helenic Conference on AI, 2006

Abduction for Extending Incomplete Information Sources.
Proceedings of the Advances in Artificial Intelligence, 4th Helenic Conference on AI, 2006

Trialogical E-Learning and Emergent Knowledge Artifacts.
Proceedings of the Innovative Approaches for Learning and Knowledge Sharing, 2006

On the visualization of large-sized ontologies.
Proceedings of the working conference on Advanced visual interfaces, 2006

2005
Mediators over taxonomy-based information sources.
VLDB J., 2005

Compound Term Composition Algebra: The Semantics.
J. Data Semant., 2005

How to Tame a Very Large ER Diagram (Using Link Analysis and Force-Directed Drawing Algorithms).
Proceedings of the Conceptual Modeling, 2005

2004
A Unifying Framework for Flexible Information Access in Taxonomy-Based Sources.
Proceedings of the Flexible Query Answering Systems, 6th International Conference, 2004

Towards a Generalized Interaction Scheme for Information Access.
Proceedings of the Foundations of Information and Knowledge Systems, 2004

FASTAXON: A System for FAST (and Faceted) TAXONomy Design.
Proceedings of the Conceptual Modeling, 2004

Mining the Meaningful Compound Terms from Materialized Faceted Taxonomies.
Proceedings of the On the Move to Meaningful Internet Systems 2004: CoopIS, 2004

Querying Articulated Sources.
Proceedings of the On the Move to Meaningful Internet Systems 2004: CoopIS, 2004

2003
An Abduction-Based Method for Index Relaxation in Taxonomy-Based Sources.
Proceedings of the Mathematical Foundations of Computer Science 2003, 2003

Taxonomy-Based Conceptual Modeling for Peer-to-Peer Networks.
Proceedings of the Conceptual Modeling, 2003

An Algebraic Approach for Specifying Compound Terms in Faceted Taxonomies.
Proceedings of the Information Modelling and Knowledge Bases XV, 2003

Query Evaluation over Networks of Logic-based Mediators (Position Paper).
Proceedings of the 2003 International Workshop on Description Logics (DL2003), 2003

Query Evaluation in Peer-to-Peer Networks of Taxonomy-Based Sources.
Proceedings of the On The Move to Meaningful Internet Systems 2003: CoopIS, DOA, and ODBASE, 2003

The Semantics of the Compound Term Composition Algebra.
Proceedings of the On The Move to Meaningful Internet Systems 2003: CoopIS, DOA, and ODBASE, 2003

Ostensive Automatic Schema Mapping for Taxonomy-Based Peer-to-Peer Systems.
Proceedings of the Cooperative Information Agents VII, 7th International Workshop, 2003

2002
Collaborative ontology-based information indexing and retrieval
PhD thesis, 2002

Extended Faceted Taxonomies for Web Catalogs.
Proceedings of the 3rd International Conference on Web Information Systems Engineering, 2002

Query Translation for Mediators over Ontology-Based Information Sources.
Proceedings of the Methods and Applications of Artificial Intelligence, 2002

On Personalizing the Catalogs of Web Portals.
Proceedings of the Fifteenth International Florida Artificial Intelligence Research Society Conference, 2002

Extended Faceted Ontologies.
Proceedings of the Advanced Information Systems Engineering, 14th International Conference, 2002

2001
Mediators over Ontology-Based Information Sources.
Proceedings of the 2nd International Conference on Web Information Systems Engineering, 2001

Democratic Data Fusion for Information Retrieval Mediators.
Proceedings of the 2001 ACS / IEEE International Conference on Computer Systems and Applications (AICCSA 2001), 2001

1996
Context-Driven Information Base Update.
Proceedings of the Advances Information System Engineering, 8th International Conference, 1996


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