Context-Driven Information Base Update. - Panos Constantopoulos; Yannis Tzitzikas (CAiSE, 1996)

Democratic Data Fusion for Information Retrieval Mediators. - Yannis Tzitzikas (AICCSA, 2001)

Mediators over Ontology-Based Information Sources. - Yannis Tzitzikas; Panos Constantopoulos; Nicolas Spyratos (WISE (1), 2001)

Extended Faceted Ontologies. - Yannis Tzitzikas; Nicolas Spyratos; Panos Constantopoulos; Anastasia Analyti (CAiSE, 2002)

On Personalizing the Catalogs of Web Portals. - Nicolas Spyratos; Yannis Tzitzikas; Vassilis Christophides (FLAIRS, 2002)

Query Translation for Mediators over Ontology-Based Information Sources. - Yannis Tzitzikas; Nicolas Spyratos; Panos Constantopoulos (SETN, 2002)

Extended Faceted Taxonomies for Web Catalogs. - Yannis Tzitzikas; Nicolas Spyratos; Panos Constantopoulos; Anastasia Analyti (WISE, 2002)

Collaborative ontology-based information indexing and retrieval - Yannis Tzitzikas (2002)

Ostensive Automatic Schema Mapping for Taxonomy-Based Peer-to-Peer Systems. - Yannis Tzitzikas; Carlo Meghini (CIA, 2003)

The Semantics of the Compound Term Composition Algebra. - Yannis Tzitzikas; Anastasia Analyti; Nicolas Spyratos (OTM, 2003)

Query Evaluation in Peer-to-Peer Networks of Taxonomy-Based Sources. - Yannis Tzitzikas; Carlo Meghini (OTM, 2003)

Query Evaluation over Networks of Logic-based Mediators (Position Paper). - Carlo Meghini; Yannis Tzitzikas (Description Logics, 2003)

An Algebraic Approach for Specifying Compound Terms in Faceted Taxonomies. - Yannis Tzitzikas; Anastasia Analyti; Nicolas Spyratos; Panos Constantopoulos (EJC, 2003)

Taxonomy-Based Conceptual Modeling for Peer-to-Peer Networks. - Yannis Tzitzikas; Carlo Meghini; Nicolas Spyratos (ER, 2003)

An Abduction-Based Method for Index Relaxation in Taxonomy-Based Sources. - Carlo Meghini; Yannis Tzitzikas; Nicolas Spyratos (MFCS, 2003)

Querying Articulated Sources. - Carlo Meghini; Yannis Tzitzikas (CoopIS/DOA/ODBASE (2), 2004)

Mining the Meaningful Compound Terms from Materialized Faceted Taxonomies. - Yannis Tzitzikas; Anastasia Analyti (CoopIS/DOA/ODBASE (2), 2004)

FASTAXON: A System for FAST (and Faceted) TAXONomy Design. - Yannis Tzitzikas; Raimo Launonen; Mika Hakkarainen; Pekka Korhonen; Tero Leppänen; Esko Simpanen; Hannu Törnroos; Pekka Uusitalo; Pentti Vänskä (ER, 2004)

Towards a Generalized Interaction Scheme for Information Access. - Yannis Tzitzikas; Carlo Meghini; Nicolas Spyratos (FoIKS, 2004)

A Unifying Framework for Flexible Information Access in Taxonomy-Based Sources. - Yannis Tzitzikas; Carlo Meghini; Nicolas Spyratos (FQAS, 2004)

How to Tame a Very Large ER Diagram (Using Link Analysis and Force-Directed Drawing Algorithms). - Yannis Tzitzikas; Jean-Luc Hainaut (ER, 2005)

Compound Term Composition Algebra: The Semantics. - Yannis Tzitzikas; Anastasia Analyti; Nicolas Spyratos (J. Data Semant., 2005)

Mediators over taxonomy-based information sources. - Yannis Tzitzikas; Nicolas Spyratos; Panos Constantopoulos (VLDB J., 2005)

On the visualization of large-sized ontologies. - Yannis Tzitzikas; Jean-Luc Hainaut (AVI, 2006)

Trialogical E-Learning and Emergent Knowledge Artifacts. - Yannis Tzitzikas; Vassilis Christophides; Giorgos Flouris; Dimitris Kotzinos; Hannu Markkanen; Dimitris Plexousakis; Nicolas Spyratos (EC-TEL, 2006)

Abduction for Extending Incomplete Information Sources. - Carlo Meghini; Yannis Tzitzikas; Nicolas Spyratos (SETN, 2006)

Revising Faceted Taxonomies and CTCA Expressions. - Yannis Tzitzikas (SETN, 2006)

An algebraic method for compressing symbolic data tables. - Yannis Tzitzikas (Intell. Data Anal., 2006)

A unified interaction scheme for information sources. - Yannis Tzitzikas; Carlo Meghini; Nicolas Spyratos (J. Intell. Inf. Syst., 2006)

Mining the meaningful term conjunctions from materialised faceted taxonomies: algorithms and complexity. - Yannis Tzitzikas; Anastasia Analyti (Knowl. Inf. Syst., 2006)

(Semantic web) evolution through change logs: Problems and solutions. - Yannis Tzitzikas; Dimitris Kotzinos (Artificial Intelligence and Applications, 2007)

Dependency Management for the Preservation of Digital Information. - Yannis Tzitzikas (DEXA, 2007)

Faceted Taxonomy-based Information Management. - Yannis Tzitzikas; Anastasia Analyti (DEXA Workshops, 2007)

Naming Functions for the Vector Space Model. - Yannis Tzitzikas; Yannis Theoharis (ECIR, 2007)

Mind the (Intelligibility) Gap. - Yannis Tzitzikas; Giorgos Flouris (ECDL, 2007)

On the Foundations of Computing Deltas Between RDF Models. - Dimitris Zeginis; Yannis Tzitzikas; Vassilis Christophides (ISWC/ASWC, 2007)

Query Evaluation in P2P Systems of Taxonomy-based Sources: Algorithms, Complexity, and Optimizations - Carlo Meghini; Yannis Tzitzikas; Anastasia Analyti (CoRR, 2007)

An algebra for specifying valid compound terms in faceted taxonomies. - Yannis Tzitzikas; Anastasia Analyti; Nicolas Spyratos; Panos Constantopoulos (Data Knowl. Eng., 2007)

Emergent Knowledge Artifacts for Supporting Trialogical E-Learning. - Yannis Tzitzikas; Vassilis Christophides; Giorgos Flouris; Dimitris Kotzinos; Hannu Markkanen; Dimitris Plexousakis; Nicolas Spyratos (Int. J. Web Based Learn. Teach. Technol., 2007)

On Ranking RDF Schema Elements (and its Application in Visualization). - Yannis Tzitzikas; Dimitris Kotzinos; Yannis Theoharis (J. Univers. Comput. Sci., 2007)

Evolution of faceted taxonomies and CTCA expressions. - Yannis Tzitzikas (Knowl. Inf. Syst., 2007)

FleXplorer: A Framework for Providing Faceted and Dynamic Taxonomy-Based Information Exploration. - Yannis Tzitzikas; Nikos Armenatzoglou; Panagiotis Papadakos (DEXA Workshops, 2008)

On Storage Policies for Semantic Web Repositories That Support Versioning. - Yannis Tzitzikas; Yannis Theoharis; Dimitris Andreou (ESWC, 2008)

On a Probabilistic Combination of Prediction Sources. - Ioannis Rousidis; George Tzagkarakis; Dimitris Plexousakis; Yannis Tzitzikas (ISMIS, 2008)

Mitos: Design and Evaluation of a DBMS-Based Web Search Engine. - Panagiotis Papadakos; Yannis Theoharis; Yannis Marketakis; Nikos Armenatzoglou; Yannis Tzitzikas (Panhellenic Conference on Informatics, 2008)

The Anatomy of Mitos Web Search Engine - Panagiotis Papadakos; Giorgos Vasiliadis; Yannis Theoharis; Nikos Armenatzoglou; Stella Kopidaki; Yannis Marketakis; Manos Daskalakis; Kostas Karamaroudis; Giorgos Linardakis; Giannis Makrydakis; Vangelis Papathanasiou; Lefteris Sardis; et al. (CoRR, 2008)

Abduction for Accessing Information Sources. - Carlo Meghini; Yannis Tzitzikas; Nicolas Spyratos (Fundam. Informaticae, 2008)

On Graph Features of Semantic Web Schemas. - Yannis Theoharis; Yannis Tzitzikas; Dimitris Kotzinos; Vassilis Christophides (IEEE Trans. Knowl. Data Eng., 2008)

Comparison with Other Techniques. - Giovanni Maria Sacco; Sébastien Ferré; Yannis Tzitzikas (Dynamic Taxonomies and Faceted Search, 2009)

Conclusions. - Giovanni Maria Sacco; Yannis Tzitzikas (Dynamic Taxonomies and Faceted Search, 2009)

System Implementation. - Giovanni Maria Sacco; Yannis Tzitzikas; Sébastien Ferré (Dynamic Taxonomies and Faceted Search, 2009)

Faceted Taxonomy-Based Sources. - Yannis Tzitzikas (Dynamic Taxonomies and Faceted Search, 2009)

Engineering Taxonomy-Based Sources. - Yannis Tzitzikas (Dynamic Taxonomies and Faceted Search, 2009)

Specifying Valid Compound Terms in Interrelated Faceted Taxonomies. - Anastasia Analyti; Yannis Tzitzikas; Nicolas Spyratos (ER, 2009)

Exploratory Web Searching with Dynamic Taxonomies and Results Clustering. - Panagiotis Papadakos; Stella Kopidaki; Nikos Armenatzoglou; Yannis Tzitzikas (ECDL, 2009)

PreScan: towards automating the preservation of digital objects. - Yannis Marketakis; Makis Tzanakis; Yannis Tzitzikas (MEDES, 2009)

STC+ and NM-STC: Two Novel Online Results Clustering Methods for Web Searching. - Stella Kopidaki; Panagiotis Papadakos; Yannis Tzitzikas (WISE, 2009)

Object-Relational Database Representations for Text Indexing - Panagiotis Papadakos; Yannis Theoharis; Yannis Marketakis; Nikos Armenatzoglou; Yannis Tzitzikas (CoRR, 2009)

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

Dependency management for digital preservation using semantic web technologies. - Yannis Marketakis; Yannis Tzitzikas (Int. J. Digit. Libr., 2009)

StarLion: Auto-configurable Layouts for Exploring Ontologies. - Stamatis Zampetakis; Yannis Tzitzikas; Asterios Leonidis; Dimitris Kotzinos (ESWC (2), 2010)

Advancing Search Query Autocompletion Services with More and Better Suggestions. - Dimitrios Kastrinakis; Yannis Tzitzikas (ICWE, 2010)

Task-Based Dependency Management for the Preservation of Digital Objects Using Rules. - Yannis Tzitzikas; Yannis Marketakis; Grigoris Antoniou (SETN, 2010)

Modeling and querying provenance by extending CIDOC CRM. - Maria Theodoridou; Yannis Tzitzikas; Martin Doerr; Yannis Marketakis; Valantis Melessanakis (Distributed Parallel Databases, 2010)

Knowledge Management for Digital Preservation. - Yannis Tzitzikas; Vassilis Christophides (ERCIM News, 2010)

Automating the Ingestion and Transformation of Embedded Metadata. - Yannis Tzitzikas; Yannis Marketakis (ERCIM News, 2010)

Interactive Exploration of Fuzzy RDF Knowledge Bases. - Nikos Manolis; Yannis Tzitzikas (ESWC (1), 2011)

Exploiting Available Memory and Disk for Scalable Instant Overview Search. - Pavlos Fafalios; Yannis Tzitzikas (WISE, 2011)

Similarity-based Browsing over Linked Open Data - Michael Hickson; Yannis Kargakis; Yannis Tzitzikas (CoRR, 2011)

Query processing in distributed, taxonomy-based information sources - Carlo Meghini; Yannis Tzitzikas; Veronica Coltella; Anastasia Analyti (CoRR, 2011)

On Computing Deltas of RDF/S Knowledge Bases. - Dimitris Zeginis; Yannis Tzitzikas; Vassilis Christophides (ACM Trans. Web, 2011)

Evolution of Workflow Provenance Information in the Presence of Custom Inference Rules. - Christos Strubulis; Yannis Tzitzikas; Martin Doerr; Giorgos Flouris (SWPM@ESWC, 2012)

Towards a Long-term Preservation Infrastructure for Earth Science Data. - Arif Shaon; Felix C. Engel; David Giaretta; Esther Conway; Brian Matthews; Yannis Tzitzikas; Yannis Marketakis; Holger Brocks; Ugo Di Giammatteo; Jinsongdi Yu; Raffaele Guarino; Fulvio Marelli; et al. (iPRES, 2012)

Curating the Specificity of Metadata while World Models Evolve. - Yannis Tzitzikas; Anastasia Analyti; Mary Kampouraki (iPRES, 2012)

Conversion and Emulation-aware Dependency Reasoning for Curation Services. - Yannis Tzitzikas; Yannis Marketakis; Yannis Kargakis (iPRES, 2012)

Web Searching with Entity Mining at Query Time. - Pavlos Fafalios; Ioannis Kitsos; Yannis Marketakis; Claudio Baldassarre; Michail Salampasis; Yannis Tzitzikas (IRFC, 2012)

Demonstrating Blank Node Matching and RDF/S Comparison Functions. - Christina Lantzaki; Yannis Tzitzikas; Dimitris Zeginis (ISWC (Posters & Demos), 2012)

Blank Node Matching and RDF/S Comparison Functions. - Yannis Tzitzikas; Christina Lantzaki; Dimitris Zeginis (ISWC (1), 2012)

An Interactive Exploratory System with Real-Time Preference Elicitation. - Panagiotis Papadakos; Yannis Tzitzikas; Dafni Zafeiri (WISE, 2012)

Scalable, flexible and generic instant overview search. - Pavlos Fafalios; Ioannis Kitsos; Yannis Tzitzikas (WWW (Companion Volume), 2012)

Information Carriers and Identification of Information Objects: An Ontological Approach - Martin Doerr; Yannis Tzitzikas (CoRR, 2012)

On exploiting static and dynamically mined metadata for exploratory web searching. - Panagiotis Papadakos; Nikos Armenatzoglou; Stella Kopidaki; Yannis Tzitzikas (Knowl. Inf. Syst., 2012)

Star-like auto-configurable layouts of variable radius for visualizing and exploring RDF/S ontologies. - Stamatis Zampetakis; Yannis Tzitzikas; Asterios Leonidis; Dimitris Kotzinos (J. Vis. Lang. Comput., 2012)

Interoperability Objectives and Approaches: Results from the APARSEN NoE. - Barbara Bazzanella; Yannis Tzitzikas (iPRES, 2013)

Integrating Heterogeneous and Distributed Information about Marine Species through a Top Level Ontology. - Yannis Tzitzikas; Carlo Allocca; Chryssoula Bekiari; Yannis Marketakis; Pavlos Fafalios; Martin Doerr; Nikos Minadakis; Theodore Patkos; Leonardo Candela (MTSR, 2013)

X-ENS: semantic enrichment of web search results at real-time. - Pavlos Fafalios; Yannis Tzitzikas (SIGIR, 2013)

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

Interactive Exploration of Multi-Dimensional and Hierarchical Information Spaces with Real-Time Preference Elicitation. - Yannis Tzitzikas; Panagiotis Papadakos (Fundam. Informaticae, 2013)

Exploratory Professional Search through Semantic Post-Analysis of Search Results. - Pavlos Fafalios; Yannis Tzitzikas (Professional Search in the Modern World, 2014)

Hippalus: Preference-enriched Faceted Exploration. - Panagiotis Papadakos; Yannis Tzitzikas (EDBT/ICDT Workshops, 2014)

Quantifying the Connectivity of a Semantic Warehouse. - Yannis Tzitzikas; Nikos Minadakis; Yannis Marketakis; Pavlos Fafalios; Carlo Allocca; Michalis Mountantonakis (EDBT/ICDT Workshops, 2014)

Generating Synthetic RDF Data with Connected Blank Nodes for Benchmarking. - Christina Lantzaki; Thanos Yannakis; Yannis Tzitzikas; Anastasia Analyti (ESWC, 2014)

Extending VoID for Expressing Connectivity Metrics of a Semantic Warehouse. - Michalis Mountantonakis; Carlo Allocca; Pavlos Fafalios; Nikos Minadakis; Yannis Marketakis; Christina Lantzaki; Yannis Tzitzikas (PROFILES@ESWC, 2014)

MatWare : Constructing and Exploiting Domain Specific Warehouses by Aggregating Semantic Data. - Yannis Tzitzikas; Nikos Minadakis; Yannis Marketakis; Pavlos Fafalios; Carlo Allocca; Michalis Mountantonakis; Ioanna Zidianaki (ESWC, 2014)

Epimenides: Interoperability Reasoning for Digital Preservation. - Yannis Kargakis; René van Horik; Yannis Tzitzikas (iPRES, 2014)

Epimenides: An information system offering automated reasoning for the needs of digital preservation. - Yannis Kargakis; Yannis Tzitzikas (JCDL, 2014)

Post-analysis of Keyword-Based Search Results Using Entity Mining, Linked Data, and Link Analysis at Query Time. - Pavlos Fafalios; Yannis Tzitzikas (ICSC, 2014)

Configuring Named Entity Extraction through Real-Time Exploitation of Linked Data. - Pavlos Fafalios; Manolis Baritakis; Yannis Tzitzikas (WIMS, 2014)

Tasks that Require, or can Benefit from, Matching Blank Nodes. - Christina Lantzaki; Yannis Tzitzikas (CoRR, 2014)

Scalable entity-based summarization of web search results using MapReduce. - Ioannis Kitsos; Kostas Magoutis; Yannis Tzitzikas (Distributed Parallel Databases, 2014)

Ontology-based Integration of Heterogeneous and Distributed Information of the Marine Domain. - Yannis Tzitzikas; Carlo Allocca; Chryssoula Bekiari; Yannis Marketakis; Pavlos Fafalios; Nikos Minadakis (ERCIM News, 2014)

Enriching Textual Search Results at Query Time Using Entity Mining, Linked Data and Link Analysis. - Pavlos Fafalios; Panagiotis Papadakos; Yannis Tzitzikas (Int. J. Semantic Comput., 2014)

A case study on propagating and updating provenance information using the CIDOC CRM. - Christos Strubulis; Giorgos Flouris; Yannis Tzitzikas; Martin Doerr (Int. J. Digit. Libr., 2014)

Curating the Specificity of Ontological Descriptions under Ontology Evolution. - Yannis Tzitzikas; Mary Kampouraki; Anastasia Analyti (J. Data Semant., 2014)

Report on the 3rd MUMIA Training School on Information Retrieval and Interactive Information Access, July 21-25, 2014, FORTH, Heraklion, Crete, Greece. - Michail Salampasis; Yannis Tzitzikas (SIGIR Forum, 2014)

Species Identification Through Preference-Enriched Faceted Search. - Yannis Tzitzikas; Nicolas Bailly; Panagiotis Papadakos; Nikos Minadakis; George Nikitakis (MTSR, 2015)

SPARQL-LD: a SPARQL Extension for Fetching and Querying Linked Data. - Pavlos Fafalios; Yannis Tzitzikas (ISWC (Posters & Demos), 2015)

Entity-based Stochastic Analysis of Search Results for Query Expansion and Results Re-Ranking. - Pavlos Fafalios; Yannis Tzitzikas (TREC, 2015)

Exploiting Linked Data for Open and Configurable Named Entity Extraction. - Pavlos Fafalios; Manolis Baritakis; Yannis Tzitzikas (Int. J. Artif. Intell. Tools, 2015)

Answering keyword queries through cached subqueries in best match retrieval models. - Myron Papadakis; Yannis Tzitzikas (J. Intell. Inf. Syst., 2015)

Assisting digital interoperability and preservation through advanced dependency reasoning. - Yannis Tzitzikas; Yannis Kargakis; Yannis Marketakis (Int. J. Digit. Libr., 2015)

Type-Ahead Exploratory Search through Typo and Word Order Tolerant Autocompletion. - Pavlos Fafalios; Yannis Tzitzikas (J. Web Eng., 2015)

Unifying heterogeneous and distributed information about marine species through the top level ontology MarineTLO. - Yannis Tzitzikas; Carlo Allocca; Chryssoula Bekiari; Yannis Marketakis; Pavlos Fafalios; Martin Doerr; Nikos Minadakis; Theodore Patkos; Leonardo Candela (Program, 2015)

Querying the Web of Data with SPARQL-LD. - Pavlos Fafalios; Thanos Yannakis; Yannis Tzitzikas (TPDL, 2016)

Comparing the effectiveness of intentional preferences versus preferences over specific choices: a user study. - Panagiotis Papadakos; Yannis Tzitzikas (Int. J. Inf. Decis. Sci., 2016)

Using preference-enriched faceted search for species identification. - Yannis Tzitzikas; Nicolas Bailly; Panagiotis Papadakos; Nikos Minadakis; George Nikitakis (Int. J. Metadata Semant. Ontologies, 2016)

Quantifying the Connectivity of a Semantic Warehouse and Understanding its Evolution over Time. - Michalis Mountantonakis; Nikos Minadakis; Yannis Marketakis; Pavlos Fafalios; Yannis Tzitzikas (Int. J. Semantic Web Inf. Syst., 2016)

On Measuring the Lattice of Commonalities Among Several Linked Datasets. - Michalis Mountantonakis; Yannis Tzitzikas (Proc. VLDB Endow., 2016)

How Linked Data can Aid Machine Learning-Based Tasks. - Michalis Mountantonakis; Yannis Tzitzikas (TPDL, 2017)

Towards a Global Record of Stocks and Fisheries. - Yannis Tzitzikas; Yannis Marketakis; Nikos Minadakis; Michalis Mountantonakis; Leonardo Candela; Francesco Mangiacrapa; Pasquale Pagano; Costantino Perciante; Donatella Castelli; Marc Taconet; Aureliano Gentile; Giulia Gorelli (HAICTA, 2017)

Methods and Tools for Supporting the Integration of Stocks and Fisheries. - Yannis Tzitzikas; Yannis Marketakis; Nikos Minadakis; Michalis Mountantonakis; Leonardo Candela; Francesco Mangiacrapa; Pasquale Pagano; Costantino Perciante; Donatella Castelli; Marc Taconet; Aureliano Gentile; Giulia Gorelli (HAICTA (Revised Selected Papers), 2017)

PFSgeo: Preference-Enriched Faceted Search for Geographical Data. - Panagiotis Lionakis; Yannis Tzitzikas (OTM Conferences (2), 2017)

LD-SDS: Towards an Expressive Spoken Dialogue System based on Linked-Data. - Alexandros Papangelis; Panagiotis Papadakos; Margarita Kotti; Yannis Stylianou; Yannis Tzitzikas; Dimitris Plexousakis (CoRR, 2017)

Services for Large Scale Semantic Integration of Data. - Michalis Mountantonakis; Yannis Tzitzikas (ERCIM News, 2017)

Stochastic reranking of biomedical search results based on extracted entities. - Pavlos Fafalios; Yannis Tzitzikas (J. Assoc. Inf. Sci. Technol., 2017)

Faceted exploration of RDF/S datasets: a survey. - Yannis Tzitzikas; Nikos Manolis; Panagiotis Papadakos (J. Intell. Inf. Syst., 2017)

Radius-aware approximate blank node matching using signatures. - Christina Lantzaki; Panagiotis Papadakos; Anastasia Analyti; Yannis Tzitzikas (Knowl. Inf. Syst., 2017)

Cinderella's Stick - A Fairy Tale for Digital Preservation - Yannis Tzitzikas; Yannis Marketakis (Springer, 2018)

An Interactive 3D Visualization for the LOD Cloud. - Maria-Evangelia Papadaki; Panagiotis Papadakos; Michalis Mountantonakis; Yannis Tzitzikas (EDBT/ICDT Workshops, 2018)

On Finding the Relevant User Reviews for Advancing Conversational Faceted Search. - Eleftherios Dimitrakis; Konstantinos Sgontzos; Panagiotis Papadakos; Yannis Marketakis; Alexandros Papangelis; Yannis Stylianou; Yannis Tzitzikas (EMSASW@ESWC, 2018)

Heuristics-based Query Reordering for Federated Queries in SPARQL 1.1 and SPARQL-LD. - Thanos Yannakis; Pavlos Fafalios; Yannis Tzitzikas (GeoLD-QuWeDa@ESWC, 2018)

Spoken Dialogue for Information Navigation. - Alexandros Papangelis; Panagiotis Papadakos; Yannis Stylianou; Yannis Tzitzikas (SIGDIAL Conference, 2018)

Facetize: An Interactive Tool for Cleaning and Transforming Datasets for Facilitating Exploratory Search. - Anna Kokolaki; Yannis Tzitzikas (CoRR, 2018)

LODsyndesis: The Biggest Knowledge Graph of the Linked Open Data Cloud that Includes all Inferred Equivalence Relationships. - Michalis Mountantonakis; Yannis Tzitzikas (ERCIM News, 2018)

High Performance Methods for Linked Open Data Connectivity Analytics. - Michalis Mountantonakis; Yannis Tzitzikas (Inf., 2018)

Scalable Methods for Measuring the Connectivity and Quality of Large Numbers of Linked Datasets. - Michalis Mountantonakis; Yannis Tzitzikas (ACM J. Data Inf. Qual., 2018)

Enabling Efficient Question Answering over Hundreds of Linked Datasets. - Eleftherios Dimitrakis; Konstantinos Sgontzos; Michalis Mountantonakis; Yannis Tzitzikas (ISIP, 2019)

Analytics over RDF Graphs. - Maria-Evangelia Papadaki; Yannis Tzitzikas; Nicolas Spyratos (ISIP, 2019)

Extending Faceted Search with Automated Object Ranking. - Kostas Manioudakis; Yannis Tzitzikas (MTSR, 2019)

Knowledge Graph Embeddings over Hundreds of Linked Datasets. - Michalis Mountantonakis; Yannis Tzitzikas (MTSR, 2019)

How many and what types of SPARQL queries can be answered through zero-knowledge link traversal? - Pavlos Fafalios; Yannis Tzitzikas (SAC, 2019)

Crowd-Sourced Collection of Task-Oriented Human-Human Dialogues in a Multi-domain Scenario. - Norbert Braunschweiler; Panagiotis Papadakos; Margarita Kotti; Yannis Marketakis; Yannis Tzitzikas (TSD, 2019)

CPOI: A Compact Method to Archive Versioned RDF Triple-Sets. - Maria Psaraki; Yannis Tzitzikas (CoRR, 2019)

CS563-QA: A Collection for Evaluating Question Answering Systems. - Katerina Papantoniou; Yannis Tzitzikas (CoRR, 2019)

Large-scale Semantic Integration of Linked Data: A Survey. - Michalis Mountantonakis; Yannis Tzitzikas (ACM Comput. Surv., 2019)

Preference-Enriched Faceted Search for Voting Aid Applications. - Yannis Tzitzikas; Eleftherios Dimitrakis (IEEE Trans. Emerg. Top. Comput., 2019)

Keyword Search over RDF Using Document-Centric Information Retrieval Systems. - Giorgos Kadilierakis; Pavlos Fafalios; Panagiotis Papadakos; Yannis Tzitzikas (ESWC, 2020)

Elas4RDF: Multi-perspective Triple-Centered Keyword Search over RDF Using Elasticsearch. - Giorgos Kadilierakis; Christos Nikas; Pavlos Fafalios; Panagiotis Papadakos; Yannis Tzitzikas (ESWC (Satellite Events), 2020)

$ mathtt{LODsyndesis}_{IE}$: Entity Extraction from Text and Enrichment Using Hundreds of Linked Datasets. - Michalis Mountantonakis; Yannis Tzitzikas (ESWC (Satellite Events), 2020)

On the Evolution of Semantic Warehouses: The Case of Global Record of Stocks and Fisheries. - Yannis Marketakis; Yannis Tzitzikas; Aureliano Gentile; Bracken van Niekerk; Marc Taconet (MTSR, 2020)

How Can a University Take Its First Steps in Open Data? - Yannis Tzitzikas; Marios Pitikakis; Giorgos Giakoumis; Kalliopi Varouha; Eleni Karkanaki (MTSR, 2020)

Two-stage Semantic Answer Type Prediction for Question Answering using BERT and Class-Specificity Rewarding. - Christos Nikas; Pavlos Fafalios; Yannis Tzitzikas (SMART@ISWC, 2020)

NLP for the Greek Language: A Brief Survey. - Katerina Papantoniou; Yannis Tzitzikas (SETN, 2020)

Keyword Search over RDF: Is a Single Perspective Enough? - Christos Nikas; Giorgos Kadilierakis; Pavlos Fafalios; Yannis Tzitzikas (Big Data Cogn. Comput., 2020)

Reinforcing Fisheries Management through Semantic Data Integration. - Yannis Tzitzikas; Yannis Marketakis (ERCIM News, 2020)

Content-based Union and Complement Metrics for Dataset Search over RDF Knowledge Graphs. - Michalis Mountantonakis; Yannis Tzitzikas (ACM J. Data Inf. Qual., 2020)

A survey on question answering systems over linked data and documents. - Eleftherios Dimitrakis; Konstantinos Sgontzos; Yannis Tzitzikas (J. Intell. Inf. Syst., 2020)

Faceted Search with Object Ranking and Answer Size Constraints. - Kostas Manioudakis; Yannis Tzitzikas (ACM Trans. Inf. Syst., 2020)

Chattack: A Gamified Crowd-Sourcing Platform for Tagging Deceptive & Abusive Behaviour. - Emmanouil Smyrnakis; Katerina Papantoniou; Panagiotis Papadakos; Yannis Tzitzikas (ECIR (2), 2021)

Towards Semantic Interoperability inHistorical Research: Documenting Research Data and Knowledge withSynthesis. - Pavlos Fafalios; Konstantina Konsolaki; Lida Charami; Kostas Petrakis; Manos Paterakis; Dimitris Angelakis; Yannis Tzitzikas; Chrysoula Bekiari; Martin Doerr (ISWC, 2021)

Open Domain Question Answering over Knowledge Graphs Using Keyword Search, Answer Type Prediction, SPARQL and Pre-trained Neural Models. - Christos Nikas; Pavlos Fafalios; Yannis Tzitzikas (ISWC, 2021)

How Your Cultural Dataset is Connected to the Rest Linked Open Data? - Michalis Mountantonakis; Yannis Tzitzikas (TMM_CH, 2021)

ClaimLinker: Linking Text to a Knowledge Graph of Fact-checked Claims. - Evangelos Maliaroudakis; Katarina Boland; Stefan Dietze; Konstantin Todorov; Yannis Tzitzikas; Pavlos Fafalios (WWW (Companion Volume), 2021)

Towards Interactive Analytics over RDF Graphs. - Maria-Evangelia Papadaki; Nicolas Spyratos; Yannis Tzitzikas (Algorithms, 2021)

Towards Semantic Interoperability in Historical Research: Documenting Research Data and Knowledge with Synthesis. - Pavlos Fafalios; Konstantina Konsolaki; Lida Charami; Kostas Petrakis; Manos Paterakis; Dimitris Angelakis; Yannis Tzitzikas; Chryssoula Bekiari; Martin Doerr (CoRR, 2021)

A workflow for supporting the evolution requirements of RDF-based semantic warehouses. - Yannis Marketakis; Yannis Tzitzikas; Aureliano Gentile; Bracken van Niekerk; Marc Taconet (Int. J. Metadata Semant. Ontologies, 2021)

Applying cross-data set identity reasoning for producing URI embeddings over hundreds of RDF data sets. - Michalis Mountantonakis; Yannis Tzitzikas (Int. J. Metadata Semant. Ontologies, 2021)

What process can a university follow for open data? The University of Crete case. - Yannis Tzitzikas; Marios Pitikakis; Giorgos Giakoumis; Kalliopi Varouha; Eleni Karkanaki (Int. J. Metadata Semant. Ontologies, 2021)

RDFsim: Similarity-Based Browsing over DBpedia Using Embeddings. - Manos Chatzakis; Michalis Mountantonakis; Yannis Tzitzikas (Inf., 2021)

FAST CAT: Collaborative Data Entry and Curation for Semantic Interoperability in Digital Humanities. - Pavlos Fafalios; Kostas Petrakis; Georgios Samaritakis; Korina Doerr; Athina Kritsotaki; Yannis Tzitzikas; Martin Doerr (ACM Journal on Computing and Cultural Heritage, 2021)

GMW-Greek Misspelled Words. - Yannis Tzitzikas (Zenodo, 2021)

A Reconciliation Framework for the Integration of Stocks and Fisheries Information. - Yannis Marketakis; Yannis Tzitzikas; Aureliano Gentile; Bracken van Niekerk; Marc Taconet (HAICTA, 2022)

Bilingual Question Answering over DBpedia Abstracts through Machine Translation and BERT. - Michalis Mountantonakis; Michalis Bastakis; Loukas Mertzanis; Yannis Tzitzikas (DL4KG@ISWC, 2022)

LODChain: Strengthen the Connectivity of Your RDF Dataset to the Rest LOD Cloud. - Michalis Mountantonakis; Yannis Tzitzikas (ISWC, 2022)

Demonstration of LODChain: How to Tackle the Problem of Low Connectivity for your RDF Dataset. - Michalis Mountantonakis; Yannis Tzitzikas (ISWC (Posters/Demos/Industry), 2022)

FS2KG: From File Systems to Knowledge Graphs (Demo). - Yannis Tzitzikas (ISWC (Posters/Demos/Industry), 2022)

Estimating the Cost of Executing Link Traversal based SPARQL Queries. - Antonis Sklavos; Pavlos Fafalios; Yannis Tzitzikas (CoRR, 2022)

A spiral-like method to place in the space (and interact with) too many values. - Yannis Tzitzikas; Maria-Evangelia Papadaki; Manos Chatzakis (J. Intell. Inf. Syst., 2022)

Demonstrating Interactive SPARQL Formulation through Positive and Negative Examples and Feedback. - Akritas Akritidis; Yannis Tzitzikas (EDBT, 2023)

RDF-Analytics: Interactive Analytics over RDF Knowledge Graphs. - Maria-Evangelia Papadaki; Yannis Tzitzikas (EDBT, 2023)

Evaluating a Radius-based Pipeline for Question Answering over Cultural (CIDOC-CRM based) Knowledge Graphs. - Nikos Gounakis; Michalis Mountantonakis; Yannis Tzitzikas (HT, 2023)

FastCat Catalogues: Interactive Entity-Based Exploratory Analysis of Archival Documents. - Georgios Rinakakis; Kostas Petrakis; Yannis Tzitzikas; Pavlos Fafalios (JCDL, 2023)

Using Multiple RDF Knowledge Graphs for Enriching ChatGPT Responses. - Michalis Mountantonakis; Yannis Tzitzikas (ECML/PKDD (7), 2023)

Real-Time Validation of ChatGPT Facts using RDF Knowledge Graphs. - Michalis Mountantonakis; Yannis Tzitzikas (ISWC (Posters/Demos/Industry), 2023)

Why We Need Ontology-Specific Data Portals: A Case Study for CIDOC-CRM. - Michalis Mountantonakis; Ioannis Theocharakis; Yannis Tzitzikas (SWODCH, 2023)

Validating ChatGPT Facts through RDF Knowledge Graphs and Sentence Similarity. - Michalis Mountantonakis; Yannis Tzitzikas (CoRR, 2023)

ChatGPT Responses Validation through Knowledge Graphs. - Michalis Mountantonakis; Yannis Tzitzikas (ERCIM News, 2023)

A workflow model for holistic data management and semantic interoperability in quantitative archival research. - Pavlos Fafalios; Yannis Marketakis; Anastasia Axaridou; Yannis Tzitzikas; Martin Doerr (Digit. Scholarsh. Humanit., 2023)

SoundexGR: An algorithm for phonetic matching for the Greek language. - Antrei Kavros; Yannis Tzitzikas (Nat. Lang. Eng., 2023)

Modeling Modern and Historical Data as a Knowledge Graph: ACase Study for Earthquake Data. - Iosif Oikonomakis; Pavlos Fafalios; Michalis Mountantonakis; Yannis Tzitzikas (MTSR, 2024)

NLP for The Greek Language: A Longer Survey. - Katerina Papantoniou; Yannis Tzitzikas (CoRR, 2024)

A Pipeline for Validating ChatGPT Responses Using Knowledge Graphs and Embeddings. - Michalis Mountantonakis; Yannis Tzitzikas (ERCIM News, 2024)

Unifying Faceted Search and Analytics over RDF Knowledge Graphs. - Maria-Evangelia Papadaki; Yannis Tzitzikas (Knowl. Inf. Syst., 2024)

How co-authorship affects the H-index? - Yannis Tzitzikas; Giorgos Dovas (Scientometrics, 2024)

Querying knowledge graphs through positive and negative examples and feedback. - Akritas Akritidis; Yannis Tzitzikas (J. Intell. Inf. Syst., 2024)

AI-driven Extraction of Structured Data from a Large Newspaper Archive. - Nikos Kontonasios; Yannis Tzitzikas; Pavlos Fafalios (ERCIM News, 2025)

TCRMQ: An Application for Generating CIDOC-CRM SPARQL Queries from Text by Using Large Language Models. - Michalis Mountantonakis; Yannis Tzitzikas (ERCIM News, 2025)

Generating SPARQL Queries over CIDOC-CRM Using a Two-Stage Ontology Path Patterns Method in LLM Prompts. - Michalis Mountantonakis; Yannis Tzitzikas (ACM Journal on Computing and Cultural Heritage, 2025)

A comparative evaluation for question answering over Greek texts by using machine translation and BERT. - Michalis Mountantonakis; Loukas Mertzanis; Michalis Bastakis; Yannis Tzitzikas (Lang. Resour. Evaluation, 2025)