Labra's home page

Biography

Full Professor (Catedrático), University of Oviedo, Spain. Founder and main researcher of WESO (Web Semantics Oviedo) research group, which collaborates with different companies around the world applying semantic web technologies to solve practical problems.

Member of Data Shapes W3C Working Groups and of Shape Expressions, SHACL, RAX (RDF and XML interoperability) and Best practices of Multilingual Linked Open Data W3C community groups.

Previously, coordinator of the Master in Web Engineering - University of Oviedo (2016-2017), and Dean of the School of Computer Science Engineering - University of Oviedo (2004-2012).

Interests

Semantic Web
Programming languages
Software Architecture

Education

PhD in Computer Science Engineering, 2001 University of Oviedo

Publications

See All publications. Other lists: DBLP, Google scholar,, Research gate

TogoMCP: natural language querying of life-science knowledge graphs via schema-guided LLMs and the Model Context Protocol, Akira R Kinjo, Yasunori Yamamoto, Samuel Bustamante-Larriet, Jose-Emilio Labra-Gayo, Takatomo Fujisawa, Database - 2026
rudof-MCP: A Model Context Protocol Server for Semantic Web Operations, Samuel Bustamante Larriet, Diego Martín Fernández, Álvaro García Fernández, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Extended Semantic Web Conference, ESWC26, Posters and Demos - 2026
Common Foundations for Recursive Shape Languages, Shqiponja Ahmetaj, Iovka Boneva, Jan Hidders, Jose Emilio Labra Gayo, Wim Martens, Fabio Mogavero, Filip Murlak, Cem Okulmus, Ognjen Savković, Mantas Šimkus, Dominik Tomaszuk, 23rd International Conference on Principles of Knowledge Representation and Reasoning - 2026
sheXer: A robust and versatile library for automatic extraction of RDF shapes, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Software X - 2026
MCP server tools with RDF shapes, Jose Emilio Labra-Gayo, Yasunori Yamamoto, Akira R. Kinjo, Andra Waagmeester, Javier Acosta, Shuichi Kawashima, Yoko Okabeppu, Julia Koblitz, Samuel Bustamante Larriet, BioHackrXiv preprint - 2025
On Property Constraints in PG-Schema, Dominik Tomaszuk, Jose Emilio Labra Gayo, Knowledge Capture and Knowledge Representation Conference, KCAP25 - 2025
PG-Schema with Property Constraints validator in Rudof, Jose Emilio Labra Gayo, Dominik Tomaszuk, Diego Martín Fernández, Samuel Bustamante Larriet, Álvaro García Fernández, Daniel Fernández Álvarez, Knowledge Capture and Knowledge Representation Conference, KCAP25, Posters and Demos - 2025
xpSHACL: Explainable SHACL Validation using Retrieval-Augmented Generation and Large Language Models, Gustavo Correa Publio, Jose Emilio Labra Gayo, LLM+Graph: 2nd International Workshop on Data Management Opportunities in Bringing LLMs with Graph Data, VLDB25, London, 2025 - 2025
Shape Expressions with Inheritance, Iovka Boneva, Jose Emilio Labra Gayo, Eric Prud'hommeaux, Katherine Thornton, Andra Waagmeester, Extended Semantic Web Conference, Portoroz, Slovenia, 2025 - 2025
Common Foundations for SHACL, ShEx, and PG-Schema, Shqiponja Ahmetaj, Iovka Boneva, Jan Hidders, Katja Hose, Jose Emilio Labra Gayo, Wim Martens, Fabio Mogavero, Filip Murlak, Cem Okulmus, Axel Polleres, Ognjen Savković, Mantas Šimkus, Dominik Tomaszuk, International World Wide Web Conference, Sidney, Australia, 2025 - 2025
Componentizing autonomous underwater vehicles by physical-running algorithms, Claudio Navarro, Jose Emilio Labra Gayo, Francisco A. Escobar Jara, Carlos Cares, PeerJ Computer Science - 2024
Toward Efficient Legislative Processes: Analysis of Chilean Congressional Bill Votes Using Semantic Web Technologies, Francisco Cifuentes Silva, Hernán Astudillo, Jose Emilio Labra Gayo, Felipe Rivera Polo, SN Computer Science - 2024
rudof: A Rust Library for handling RDF data models and Shapes, Jose Emilio Labra Gayo, Ángel Iglesias Préstamo, Diego Martín Fernández, Marc-Antoine Arnaud, International Semantic Web Conference, ISWC24, Posters and Demos - 2024
Extending Shape Expressions for different types of knowledge graphs, Jose Emilio Labra Gayo, In 1st Workshop on Data Quality meets Machine Learning and Knowledge Graphs, DQMLKG, part of Extended Semantic Web Conference 2024, ESWC24. - 2024
Introduction to ShEx and ShEx and SHACL Compared, Shqiponja Ahmetaj, Slawomir Staworko, Jan Van den Bussche, Maxime Jakubowsk, Jose Emilio Labra Gayo, In Dagstuhl Reports, Volume 14, Issue 3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024) - 2024
Extracting shapes from large RDF data collections, Daniel Fernández Álvarez, Yasunori Yamamoto, Jose Emilio Labra Gayo, Andra Waagmeester, In Semantic Web Applications and Tools for Health Care and Life Sciences, SWAT4HCLS. - 2024
Extracting shapes from large RDF data collections, Daniel Fernández Álvarez, Yasunori Yamamoto, Jose Emilio Labra Gayo, Andra Waagmeester, In Semantic Web Applications and Tools for Health Care and Life Sciences, SWAT4HCLS. - 2024
Using Polarization and Alignment to Identify Quick-Approval Law Propositions: An Open Linked Data Application, Francisco Cifuentes Silva, Jose Emilio Labra Gayo, Hernán Astudillo, Felipe Rivera Polo, In International Conference on Applied Informatics, ICAI 2023. - 2023
Using Pregel to create Knowledge Graphs subsets described by non-recursive Shape Expressions, Ángel Iglesias Préstamo, Jose Emilio Labra Gayo, In Fifth Ibero-American Knowledge Graph and Semantic Web Conference, KGSWC 23 - 2023
A comparison between traditional and Serverless technologies in a microservices setting, Juan Mera Menéndez, Jose Emilio Labra Gayo, Enrique Riesgo Canal, Aitor Echevarría Fernández, In Software Engineering and Databases Conference, JISBD - SISTEDES - 2023
Redesign of the validation framework in LinkML, Deepak Unni, Andra Waagmeester, Jose Emilio Labra Gayo, Biohackrxiv preprint - 2023
RDF Data integration using Shape Expressions, Jose Emilio Labra Gayo, Andra Waagmeester, Yasunori Yamamoto, Ángel Iglesias-Préstamo, Toshiaki Katayama, Thomas Liener, Deepak Unni, Jerven Bolleman, Kiyoko Flora Aoki-Kinoshita, Masashi Yokochi, Núria Queralt Rosinach, Hiroshi Mori, Daniel Fernández Álvarez, Alberto Labarga, Jose Alberto Benítez Andrades, Robert Hoehndorf, Eric Prud'hommeaux, Claude Nanjo, Nishad Thalhath, Biohackrxiv preprint - 2023
Wikidata subsetting: approaches, tools, and evaluation, Seyed Amir Hosseini Beghaeiraveri, Jose Emilio Labra Gayo, Andra Waagmeester, Ammar Ammar, Carolina Gonzalez, Denise Slenter, Sabah Ul-Hasan, Egon L. Willighagen, Fiona McNeill, Alasdair J G Gray, Semantic Web Journal - 2023
A dual approach to ShEx visualization with complexity management, Jorge Álvarez Fidalgo, Jose Emilio Labra Gayo, Arxiv preprint - 2023
An approach to increase the usability of Shape Expressions editors, Pablo Menéndez Suárez, Jose Emilio Labra Gayo, Zenodo preprint - 2023
Editorial on Knowledge Graphs Validation and Quality, Jose Emilio Labra Gayo, Anastasia Dimou, Katherine Thornton, Anisa Rula, Semantic Web Journal - 2023
Enhancement and Reusage of Biomedical Knowledge Graph Subsets, Jose Emilio Labra-Gayo, Adriana Carolina González Cavazos, Andra Waagmeester, Nils Hofmann, Seyed Amir Hosseini Beghaeiraveri, Eric Prud'hommeaux, Sabah Ul-Hasan, Egon Willighagen, Ammar Ammar, Biorxiv preprint - 2022
WShEx: A language to describe and validate Wikibase entities, Jose Emilio Labra Gayo, In Wikidata Workshop, International Semantic Web Conference. CEUR Proceedings, vol 3265 - 2022
Using logical constraints to validate statistical information about disease outbreaks in collaborative knowledge graphs: the case of COVID-19 epidemiology in Wikidata, Houcemeddine Turki, Dariusz Jemielniak, Mohamed A. Hadj Taieb, Jose Emilio Labra Gayo, Mohamed Ben Aouicha, Mus’ab Banat, Thomas Shafee, Eric Prud’hommeaux, Tiago Lubiana, Diptanshu Das, Daniel Mietchen, PeerJ Computer Science - 2022
Ontolo-CI: Continuous data validation with ShEx, Gustavo Correa Publio, Jose Emilio Labra Gayo, Guillermo Facundo Colunga, Pablo Menéndez, In Semantics Conference, Semantics. Poster paper, CEUR Proceedings, vol 3235 - 2022
Automatic extraction of shapes using sheXer, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Daniel Gayo Avello, Knowledge-Based Systems - 2022
Knowledge graphs, Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutiérrez, Jose Emilio Labra Gayo, Sabrina Kirrane, Sebastian Neumaier, Axel Polleres, Roberto Navigli, Axel-Cyrille Ngonga Ngomo, Sabbir M. Rashid, Anisa Rula, Lukas Schmelzeisen, Juan Sequeda, Steffen Staab, Antoine Zimmermann, Morgan and Claypool publishers - 2021
Linking Data and Descriptions on Moths Using the Wikimedia Ecosystem, Andra Waagmeester, Paul Braun, Manoj Karingamadathil, Jose Emilio Labra Gayo, Siobhan Leachman, Katherine Thornton, In Biodiversity Information Science and Standards, TDWG 2021. Conference - 2021
Knowledge graphs, Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutiérrez, Jose Emilio Labra Gayo, Sabrina Kirrane, Sebastian Neumaier, Axel Polleres, Roberto Navigli, Axel-Cyrille Ngonga Ngomo, Sabbir M. Rashid, Anisa Rula, Lukas Schmelzeisen, Juan Sequeda, Steffen Staab, Antoine Zimmermann, ACM Computing Surveys - 2021
Representing COVID-19 information in collaborative knowledge graphs: the case of Wikidata, Houcemeddine Turki, Mohamed Ali Hadj Taieb, Thomas Shafee, Tiago Lubiana, Dariusz Jemielniak, Mohamed Ben Aouicha, Jose Emilio Labra Gayo, Eric A. Youngstromg, Mus’ab Banat, Diptanshu Das, Daniel Mietchen, Semantic Web Journal - 2021
Approaches to measure class importance in Knowledge Graphs, Daniel Fernández Álvarez, Johannes Frey, Jose Emilio Labra Gayo, Daniel Gayo-Avello, Sebastian Hellmann, PLOS One - 2021
Intestinal microbiota alterations by dietary exposure to chemicals from food cooking and processing. Application of Data Science for risk prediction, Sergio Ruiz-Saavedra, Herminio García González, Silvia Arboleya, Nuria Salazar, Jose Emilio Labra Gayo, Irene Díaz, Miguel Gueimonde, Sonia González, Clara G. de los Reyes-Gavilán, Computational and Structural Biotechnology Journal - 2021
ShExML: improving the usability of heterogeneous data mapping languages for first-time users, Herminio García González, Iovka Boneva, Sławek Staworko, Jose Emilio Labra Gayo, Juan Manuel Cueva Lovelle, PeerJ Computer Science - 2020
ShEx-Lite: Automatic generation of domain object models from a Shape Expressions subset language, Guillermo Facundo Colunga, Alejandro González Hevia, Jose Emilio Labra Gayo, Emilio Rubiera Azcona, In International Semantic Web Conference, ISWC2020. Demo paper, CEUR Proceedings, vol 2721 - 2020
ASIO: A research management system based on semantic technologies, Jose Emilio Labra Gayo, José Barranquero Tolosa, Guillermo Facundo Colunga, Alejandro González Hevia, Emilio Rubiera Azcona, Daniel Ruiz Santamaría, Paulino Álvarez de Ron Ondina, In International Semantic Web Conference, ISWC2020. First virtual workshop on Research data* management for Linked Open Science - DaMaLOS 2020 - 2020
Automatic synchronization of RDF graphs representing ontologies and Wikibase instances, Alejandro González Hevia, Guillermo Facundo Colunga, Emilio Rubiera Azcona, Jose Emilio Labra Gayo, In International Semantic Web Conference, ISWC2020. Wikidata Workshop - 2020
Representing COVID-19 information in collaborative knowledge graphs: a study of Wikidata, Houcemeddine Turki, Mohamed Ali Hadj Taieb, Thomas Shafee, Tiago Lubiana, Dariusz Jemielniak, Mohamed Ben Aouicha, Jose Emilio Labra Gayo, Mus'ab Banat, Diptanshu Das, Daniel Mietchen, Preprint submitted to journal - 2020
Using logical constraints to validate information in collaborative knowledge graphs: a study of COVID-19 on Wikidata, Houcemeddine Turki, Dariusz Jemielniak, Mohamed Ali Hadj Taieb, Jose Emilio Labra Gayo, Mohamed Ben Aouicha, Mus'ab Banat, Thomas Shafee, Eric Prud'Hommeaux, Tiago Lubiana, Diptanshu Das, Daniel Mietchen, Preprint submitted to journal - 2020
An ontology-based multi-domain model in social network analysis: Experimental validation and case study, José Alberto Benítez-Andrades, Isaías García-Rodríguez, Carmen Benavides, Héctor Aláiz-Moretón, Jose Emilio Labra Gayo, Information Systems, vol. 540, nov. 2020, doi: 10.1016/j.ins.2020.06.008 - 2020
A protocol for adding knowledge to Wikidata, a case report, Andra Waagmeester, Egon L. Willighagen, Andrew I Su, Martina Kutmon, Jose Emilio Labra Gayo, Daniel Fernández Álvarez, Quentin Groom, Peter J. Schaap, Lisa M. Verhagen, Jasper J. Koehorst, Biorxiv preprint - 2020
National Budget Law as Linked Open Data: New tools for supporting the sustainability of public finances, Francisco Cifuentes Silva, Jose Emilio Labra Gayo, Daniel Fernández Álvarez, Sustainability, vol 12, issue 11 - 2020
Converting Asturian Notaries Public deeds to Linked Data using TEI and ShExML, Herminio García-González, Elena Albarrán-Fernández, Jose Emilio Labra-Gayo, Miguel Calleja-Puerta, In Workshop: Workshop on Humanities in the Semantic web - WHISE III as ESWC 2020 - 2020
Data validation and Schema Interoperability, Leyla Garcia Castro, Jerven Bolleman, Michel Dumontier, Simon Jupp, Jose Emilio Labra Gayo, Thomas Liener, Tazro Ohta, Núria Queralt-Rosinach, Chunlei Wu, BioHackrXiv Preprint - 2020
Knowledge graphs, Aidan Hogan, Eva Blomqvist, Michael Cochez, Claudia d'Amato, Gerard de Melo, Claudio Gutiérrez, Jose Emilio Labra Gayo, Sabrina Kirrane, Sebastian Neumaier, Axel Polleres, Roberto Navigli, Axel-Cyrille Ngonga Ngomo, Sabbir M. Rashid, Anisa Rula, Lukas Schmelzeisen, Juan Sequeda, Steffen Staab, Antoine Zimmermann, Arxiv preprint - arXiv:2003.02320 - 2020
Validating Danish Wikidata Lexemes, Finn Årup Nielsen, Katherine Thornton, Jose Emilio Labra Gayo, In Semantics Conference, Semantics-2019. - 2019
Applying big data and stream processing to the real estate domain, Herminio García González, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Behaviour & Information Technology - 2019
Legislative document content extraction based on Semantic Web technologies - A use case about processing the History of the Law, Francisco Cifuentes Silva, Jose Emilio Labra Gayo, In Extended Semantic Web Conference, ESWC2019. - 2019
Using Shape Expressions (ShEx) to Share RDF Data Models and to Guide Curation with Rigorous Validation, Katherine Thornton, Harold Solbrig, Gregory Stupp, Jose Emilio Labra Gayo, Daniel Mietchen, Eric Prud'Hommeaux, Andra Waagmeester, In Extended Semantic Web Conference, ESWC2019. Lecture Notes in Compuer Science - 2019
Challenges in RDF validation, Jose Emilio Labra Gayo, Herminio García González, Daniel Fernández Álvarez, Eric Prud'hommeaux, Current Trends in Semantic Web Technologies: Theory and Practice - 2018
Inference of Latent Shape Expressions Associated to DBpedia Ontology, Daniel Fernández Álvarez, Herminio García González, Johannes Frey, Sebastian Hellmann, Jose Emilio Labra Gayo, Poster presented at International Semantic Web Conference, Monterey, California - 2018
RDFShape: An RDF playground based on Shapes, Jose Emilio Labra Gayo, Daniel Fernández Álvarez, Herminio García González, Demo presented at International Semantic Web Conference, Monterey, California - 2018
XMLSchema2ShEx: Converting XML validation to RDF validation, Herminio García González, Jose Emilio Labra Gayo, Semantic Web Journal - 2018
Semantic Modeling of Administrative Procedures from a Spanish Regional Public Administration, Francisco José Hidalgo López, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Sustainability, vol. 10, num. 3, doi: 10.3390/su10030633 - 2018
Semantics and Validation of Shapes Schemas for RDF, Iovka Boneva, Jose Emilio Labra Gayo, Eric Prud'hommeaux, In International Semantic Web Conference, ISWC2017. - 2017
MERA: A Musical Entities Reconciliation Architecture Based on Semantic Technologies, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Daniel Gayo Avello, Patricia Ordóñez de Pablos, International Journal on Semantic Web and Information Systems (IJSWIS) Volume 13, Issue 4 - 2017
Validating RDF Data, Jose Emilio Labra Gayo, Eric Prud'hommeaux, Iovka Boneva, Dimitris Kontokostas, Morgan and Claypool Publishers - 2017
SHACL Test Suite and Implementation Report, Jose Emilio Labra Gayo, Holger Knublauch, Dimitris Kontokostas, W3C Document - 2017
Shape Expressions Language 2.0, Eric Prud'hommeaux, Iovka Boneva, Jose Emilio Labra Gayo, Gregg Kellogg, W3C Community Group Report - 2017
A Web-Based Tool for Automatic Data Collection, Curation, and Visualization of Complex Healthcare Survey Studies including Social Network Analysis, José Alberto Benítez, Jose Emilio Labra Gayo, Enedina Quiroga, Vicente Martín, Isaías García, Pilar Marqués-Sánchez, Carmen Benavides, Computational and Mathematical Methods in Medicine - 2017
Towards the Implementation of the Learning Analytics in the Social Learning Environments for the Technology-Enhanced Assessment in Computer Engineering Education, Hernan Sagastegui Chigne, Jose Emilio Labra Gayo, María Elena Alva Obeso, Patricia Ordóñez De Pablos, Juan Manuel Cueva Lovelle, International Journal of Engineering Education - 2016
Enhancing e-Learning content by using Semantic Web technologies, Herminio García González, María del Puerto Paule, Jose Emilio Labra Gayo, IEEE Transactions on Learning Technologies - 2016
Inference and Serialization of Latent Graph Schemata using ShEx, Daniel Fernández Álvarez, Jose Emilio Labra Gayo, Herminio García González, The Tenth International Conference on Advances in Semantic Processing, SEMAPRO16 - 2016
Identifying potential suppliers for competitive bidding using Latent Semantic Analysis, Victor Aravena Díaz, Ricardo Gacitua, Hernán Astudillo, Jose Emilio Labra Gayo, In XLII Latin American Computing Conference (CLEI), 2016 * - 2016
Shape Expression Schemas, Iovka Boneva, Jose Emilio Labra Gayo, Slawek Staworko, Eric Prud'hommeaux, Technical report, Arxiv.org, No. 1510.0555 - 2016
Linked Data Validation and Quality, Jose Emilio Labra Gayo, European Public Sector Information Platform - ePSI, Topic report 2015 ⁄ 11 - 2015
RDF Ventures to Boldly Meet Your Most Pedestrian Needs, Eric Prud'hommeaux, Jose Emilio Labra Gayo, Bulletin of the Association for Science and Technology (ASIS&T) - 2015
Expressiveness and Complexity of ShEx for RDF, Slawek Staworko, Iovka Boneva, Eric Prud'Hommeaux, Samuel Hym, Jose Emilio Labra Gayo, Harold Solbrig, 18th International Conference on Database Theory (ICDT) - 2015
Towards an RDF validation language based on Regular Expression derivatives, Jose Emilio Labra Gayo, Eric Prud'hommeaux, Slawek Staworko, Harold Solbrig, International Workshop on Linked Web Data Management - 2015
Validating and Describing Linked Data Portals using RDF Shape Expressions, Jose Emilio Labra Gayo, Eric Prud'hommeaux, Harold Solbrig, Jose María Álvarez Rodríguez, In 1st Workshop on Linked Data Quality, Brussels, Belgique - 2015
Multilingual linked data patterns , Jose Emilio Labra Gayo, Dimitris Kontokostas, Sören Auer, Semantic Web Journal - 2015
Representing Statistical Indexes as Linked Data Including Metadata about Their Computation Process, Jose Emilio Labra Gayo, Hania Farham, Juan Castro Fernández, Jose María Álvarez Rodríguez, Metadata and Semantics Research - Lecture Notes in Computer Science - 2014
Interoperability between platforms without a defined referential model: A semi-automatic learning system for structural pairing, Secundino José González Pérez, Benjamín López Pérez, Daniel Machado Fernández, Jose Emilio Labra Gayo, Computers in Human Behaviour - 2014
Knowledge-based public service transactions: An intelligent model-driven approach in co-learning contexts, Guillermo Infante Hernández, Aquilino Adolfo Juan Fuente, Jose Emilio Labra Gayo, Benjamín López Pérez, Edward Rolando Núñez-Valdez, Computers in Human Behaviour - 2014
Shape Expressions: An RDF validation and transformation language, Eric Prud'hommeaux, Jose Emilio Labra Gayo, Harold Solbrig, In 10th International Conference on Semantic Systems, Leipzig, Germany - 2014
New trends on e-Procurement applying semantic technologies, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Computers in Industry - 2014
New trends on e-Procurement applying semantic technologies: current status and future challenges, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Computers in Industry - 2014
ACOTA: A multilingual and Semi-automatic collaborative tagging system, César Luis Alvargonzález, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Journal of Web Engineering - 2014
Inductive Representations of RDF Graphs, Jose Emilio Labra Gayo, Johan Jeuring, Jose María Álvarez Rodríguez, Science of Computer Programming - 2013
Towards a Stepwise Method for Unifying and Reconciling Corporate Names in Public Contracts Metadata: The CORFU Technique, Jose María Álvarez Rodríguez, Patricia Ordoñez de Pablos, Michail Vafopoulos, Jose Emilio Labra Gayo, Metadata and Semantics Research - Communications in Computer and Information Science, CCIS Series - 2013
Empowering the access to public procurement opportunities by means of linking controlled vocabularies. A case study of Product Scheme Classifications in the European e-Procurement sector, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Alejandro Rodríguez González, Patricia Ordóñez de Pablos, Computers in Human Behaviour - 2013
Kukulcan: Semantic Web Framework for Knowledge Management in the Domain of Digital Circuits, Francisco Edgar Castillo Barrera, R. Carolina Medina Ramírez, Jose Emilio Labra Gayo, S. Masoud Sadjadi, IKE’13: The 12th International Conference on Information and Knowledge Engineering, Las Vegas, USA - 2013
Cases on Open-Linked Data and Semantic Web Applications, Patricia Ordóñez de Pablos, Miltiadis D. Lytras, Robert D. Tennyson, Jose Emilio Labra Gayo, IGI Global, ISBN: 978-1466628274 - 2013
E-Procurement Management for Successful Electronic Government Systems, Patricia Ordóñez de Pablos, Juan Manuel Cueva Lovelle, Jose Emilio Labra Gayo, Robert D. Tennyson, IGI Global, ISBN: 9781466621190 - 2013
Applying MapReduce to Spreading Activation Algorithm on Large RDF Graphs, Jorge González Lorenzo, Jose Emilio Labra Gayo, Jose María Alvarez Rodríguez, Communications in Computer and Information Science, vol 278, pp. 601-611 - 2013
Automated Diagnosis through Ontologies and Logical Descriptions: The ADONIS Approach, Alejandro Rodríguez González, Ángel García Crespo, Ricardo Colomo Palacios, Jose Emilio Labra Gayo, Juan Miguel Gómez Berbis, Giner Alor Hernández, Engineering Effective Decision Support Technologies: New Models and Applications - 2013
ONTOSPREAD: A Framework for Supporting the Activation of Concepts in Graph-Based Structures through the Spreading Activation Technique, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Communications in Computer and Information Science, vol 278, pp. 454-459 - 2013
Towards a Practical Solution for Data Grounding in a Semantic Web Services Environment, Miguel García Rodríguez, Jose María Alvarez Rodríguez, Diego Berrueta Muñoz, Luis Polo Paredes, Jose Emilio Labra Gayo, Patricia Ordoñez De Pablos, Journal of Universal Computer Science - 2012
Web Semántica: comprendiendo el cambio hacia la Web 3.0, Jose Emilio Labra Gayo, Pocket Innova - 2012
The effects of ERP implementations on the profitability of big firms: the case of Spain, Javier de Andrés, Pedro Lorca, Jose Emilio Labra Gayo, International Journal on Technology Management, vol. 59, number 1 / 2, 2012 - 2012
Towards a Pan-European E-Procurement platform to Aggregate, Publish and Search Public Procurement Notices powered by Linked Open Data: The MOLDEAS Approach, Jose María Álvarez Rodríguez, Jose Emilio Labra Gayo, Francisco Cifuentes, Giner Hérnandez, C. Sánchez, J. A. Guzmán Luna, International Journal of Software Engineering and Knowledge Engineering (IJSEKE ) Spceial Issue on Consuming and Producing Linked Data on Real World Applications, vol 22, num. 3, 2012 - 2012
Towards an architecture and adoption process for Linked Data technologies in Open Government contexts, Francisco Cifuentes Silva, Christian Sifaqui, Jose Emilio Labra Gayo, In I-Semantics - 2011
SeDeLo: Using Semantics and Description Logics to Support Aided Clinical Diagnosis, Alejandro Rodríguez García, Jose Emilio Labra Gayo, Ricardo Colomo Palacio, Miguel A. Mayer, Juan Manual Gómez Berbis, Angel García Crespo, Journal of Medical Systems, vol. 36, number 4, pp: 2471-2481 - 2011
Towards the evaluation of usability in educative websites, María Elena Alba Obeso, Ana Belén Martínez Prieto, María del Carmen Suárez Torrente, Jose Emilio Labra Gayo, Juan Manuel Cueva Lovelle, Hernán Sagastegui Chigne, International Journal on Technology Enhanced Learning, vol. 2 - 2010
WESONet: Applying semantic web technologies and collaborative tagging to multimedia web information systems, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Juan Manuel Cueva Lovelle, Computers in Human Behaviour, vol 26, pp: 205-209, 2010 - 2009
A proposal for a Semantic Intelligent Document Repository Architecture, Alejandro Rodríguez, Ricardo Colomo, Juan Miguel Gómez, Giner Alor-Hernandez, Ruben Posada-Gomez, Jose Emilio Labra Gayo, Krishnamurthy Vidyasankar, In Electronics, Robotics and Automotive Mechanics Conference (CERMA 2009) - 2009
Ontologies in Checking for Inconsistency of Requirements Specification, Petr Kroha, R. Janetzko, Jose Emilio Labra Gayo, In Third International Conference on Advances in Semantic Processing SEMAPRO, 09 - 2009
Automated Diagnosis through Ontologies and Logical Descriptions: The ADONIS Approach, Alejandro Rodríguez González, Ángel García Crespo, Ricardo Colomo Palacios, Jose Emilio Labra Gayo, Juan Miguel Gómez Berbis, Giner Alor Hernández, International Journal of Decision Support System Technology - 2009
Doing Business by selling free services, Jose Luis Marín de la Iglesia, Jose Emilio Labra Gayo, Web 2.0 Business Models - 2009
SOAF: Semantic Indexing System Based on Collaborative Tagging, Ana Cernea Doina, Ester del Moral, Jose Emilio Labra Gayo, In Interdisciplinary Journal of E-Learning and Learning Objects, vol 4(1) - 2008
Analysis of XBRL documents representing financial statements using Semantic Web Technologies, Sheila Méndez Núñez, Jose Emilio Labra Gayo, Javier de Andrés Suárez, Patricia Ordóñez de Pablos, In 2nd International Conference on Metadata and Semantic Web Research - 2007
Combining Collaborative Tagging and Ontologies in Image Retrieval Systems, Jose Emilio Labra Gayo, Patricia Ordóñez de Pablos, Juan Manuel Cueva Lovelle, In 2nd International Conference on Metadata and Semantic Web Research - 2007
Mailing lists meet the semantic web, Sergio Fernández, Diego Berrueta, Jose Emilio Labra Gayo, In Workshop on Social Aspects of the Semantic Web (SAW 2007), Poznan, Poland - 2007
Utilización de herramientas colaborativas de desarrollo de software libre en un modelo de aprendizaje basado en proyectos, Jose Emilio Labra Gayo, Daniel Fernández Lanvin, Jesús Calvo Salvador, Agustín Cernuda del Río, XII Jornadas de Enseñanza Universitaria de Informática (Jenui 2006), Bilbao, Spain - 2006
A monadic program slicer, Yingzhou Zhang, Jose Emilio Labra Gayo, Agustín Cernuda del Río, ACM SIGPLAN Notices, 41 (5), pp. 30-38 - 2006
A Formal Method for program Slicing, Yingzhou Zhang, Baowen Xu, Jose Emilio Labra Gayo, In Australian Software Engineering Conference, ASWEC 2005 - 2005
Representaciones gráficas y Mundos Virtuales infinitos en las Prácticas de Programación Lógica y Funcional, Jose Emilio Labra Gayo, IX Jornadas de Enseñanza Universitaria de Informática (Jenui 2003), Cádiz, Spain - 2004
¿Hay Lógica en la situación actual de las titulaciones informáticas?, Jose Emilio Labra Gayo, X Jornadas de Enseñanza Universitaria de Informática (Jenui 2004), Almería, Spain - 2004
Web Engineering, Juan Manuel Cueva Lovelle, Bernardo Martín González Rodríguez, Luis Joyanes Aguilar, Jose Emilio Labra Gayo, María del Puerto Paule, Proceedings of the International Conference on Web Engineering, ICWE 2003, Oviedo, Spain, July 14-18, Lecture Notes in Computer Science, Vol. 2722 - 2003
A Generic e-Learning Multiparadigm Programming Language System: IDEFIX Project, Jose Emilio Labra Gayo, Jose Manuel Morales Gil, Alberto Manuel Fernández Álvarez, Hernán Sagastegui Chigne, In ACM Technical Symposium on Computer Science Education (SIGCSE 2003), Reno, Nevada (USA) - 2003
Specification of Logic Programming Languages from Reusable Semantic Building Blocks, Jose Emilio Labra Gayo, María C. Luengo Díaz, Juan Manuel Cueva Lovelle, Agustín Cernuda del Río, Electronic Notes on Theoretical Computer Science, vol. 64 - 2003
Plataforma de enseñanza de lenguajes de programación a través de Internet: Proyecto IDEFIX, Jose Emilio Labra Gayo, Jose Manuel Morales Gil, Roberto Turrado Camblor, In VIII Jornadas de Enseñanza Universitaria de Informática, Cáceres, Spain - 2002
Modular development of Language Processors from Reusable Semantic Specifications, Jose Emilio Labra Gayo, PhD thesis (in Spanish) - 2001
Programación Práctica en Prolog, Jose Emilio Labra Gayo, Ed. Servitec, Num. 13, ISBN: 84-8416-612-0 - 1998
Ejercicios de lógica informática, Jose Emilio Labra Gayo, Ana I. Fernández, Ed. Servitec, Num. 9, ISBN: 84-8416-357-1 - 1998
Lógica proposicional para informática, Jose Emilio Labra Gayo, Ana I. Fernández, Ed. Servitec, Num. 12, ISBN: 84-8416-613-9 - 1998
An Implementation of Modular Monadic Semantics using Folds and Monadic Folds, Jose Emilio Labra Gayo, Workshop on Research Themes on Functional Programming, Third International Summer School on Advanced Functional Programming - 1998
Harmony: a functional system for musical composition, Jose Emilio Labra Gayo, Juan Manuel Cueva Lovelle, Luis Ángel Oliveira, In II Conferencia Latinoamericana de Programación Funcional - 1997
Introducción al lenguaje Haskell, Jose Emilio Labra Gayo, Cuaderno didáctico, Número 87, Depto. Matemáticas - 1995
Lógica de predicados de primer orden, Jose Emilio Labra Gayo, Cuaderno didáctico, Número 77, Depto. Matemáticas - 1993
Simulación Entorno Operativo Unix, Jose Emilio Labra Gayo, Oliverio González, Miguel Riesco Albizu, Cuaderno didáctico, Número 39, Depto. Matemáticas - 1991

Recent & Upcoming Talks

More Talks

Shaping Knowledge and Interoperable Graphs Mon, 20 Apr, 2026, Invited talk at Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Poland
Shaping Knowledge and Interoperable Graphs Sun, 2 Nov, 2025, Tutorial at ISWC’25
Shaping Linked Data and Knowledge Graphs Sat, 25 Oct, 2025, Tutorial at DCMI-25 Conference
Workshop on Data Validation Thu, 12 Jun, 2025, Workshop at Rail Data Forum
Shaping Knowledge Graphs Wed, 11 Jun, 2025, Tutorial at ESWC’25
Validating Knowledge Graphs Wed, 11 Dec, 2024, Charla invitada en LIFIA, Universidad de La Plata
Validating Knowledge Graphs Tue, 19 Nov, 2024, Charla invitada en Máster Oficial de Ingeniería del Software e Inteligencia Artificial
Shaping Knowledge Graphs Mon, 11 Nov, 2024, Tutorial at International Semantic Web Conference
Let's dive into EntitySchemas Thu, 30 Nov, 2023, Wikidata Data Modeling Days
Knowledge graphs: description, validation and subsetting Thu, 5 Oct, 2023, Invited talk at International Center for Computational Logic at Dresden

Other info

Supervised PhD students

Francisco Cifuentes Silva: Tecnologías Semánticas en el ámbito político-legislativo, October, 2025
Daniel Fernández Álvarez: Extracción de conocimiento semántico estructurado mediante minería de medios sociales, Sept, 2022
Herminio García González: Integración semántica de grandes fuentes de datos heterogéneas, 2021
Jose Alberto Benítez Andrades: Tecnologías Semánticas aplicadas al Análisis de Redes Sociales en el ámbito de la Salud, 2017
Hernán Sagastegui Chigne: Desarrollo de Tecnologías Colaborativas para Entornos virtuales de apoyo al aprendizaje, 2015
Jose María Álvarez Rodríguez: Métodos semánticos de reutilización de datos abiertos enlazados en las licitaciones públicas, 2012

PhD Students supervision (Current)

Hugo Lebredo Buján: Aplicación de grafos de conocimiento en la interoperabilidad de datos descentralizados de ámbito privado
Claudio Andrés Navarro Cruces: Semantic Technologies Applied to Cyber-Physical Systems Modelling
Ángel García Menéndez
Enrique José Rodríguez Martín
Jorge Álvarez Fidalgo
Pablo Valdés Fernández

PhD Thesis Committees

Ammar Ammar: July, 2025, Maastricht, Enhancing the interoperability and reusability of nanosafety data: a foundation towards deeper insights and intelligent applications
Ben De Meester, IDLab, University of Ghent, Belgium, May 2020, title: Improving and Assessing Data Quality of Knowledge Graphs.
Mikko Koho, School of Science in Aalto University, April 2020, title: Representing, Using, and Maintaining Military Historical Linked Data on the Semantic Web.
Andrii Berezovskyi, KTH, Jan 2020, title: A generic framework for integration of Cyber-physical Systems by use of intelligent systems (Midterm PhD Examination)

Member of Scientific/Organizing committee

International Semantic Web Conference, 2020
Joint International Conference on Knowledge Graphs 2020
DaMaLOS-2020: First workshop on Research data* management for linked open science (* and associated Research Objects)
3rd Workshop on Quality of Open Data
2nd Iberoamerican Knowledge Graph and Semantic Web Conference
International Semantic Web Conference, 2019
24th European Conference on Artificial Intelligence
International Semantic Web Conference - ISWC 2019
[8th Workshop on Ontology Design and Patterns](http://ontologydesignpatterns.org/wiki/WOP:2017 #WOP2017_Chairs), WOP, 2017
Workshop on Linked Enterprise Data Services, Provenance, Linking and QualitY, LEDSPLaY17, 2017
Linked Data Quality Workshop, 2017
ISW-LOD2016 (4th International Workshop on Semantic Web and Linked Open Data), Puerto Rico, 2016
SEMANTiCS 2016, Senior PC member
Latin American Symposium on Data Management Systems, Co-chair
W3c workshop on Multilingual web, 2015
SEMANTiCS 2015 Research Track (11th International Conference on Semantic Systems, Research Track), Senior PC member
ReCert 2015 (1st International Workshop on Linked Data Repair and Certification), 2015
International Conference on Knowledge Engineering and Semantic Web, 2014
16th International Simposium on Computers in Education, 2014
Workshop on Ontology and Semantic Web Patterns, WOP, 2014, 2015, 2016, 2017
Spanish conference on service science and engineering, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Encuentro Nacional en Ciencias de la Computación, Mexico, 2014
Jornadas de Enseñanza Universitaria de Informática, Jenui, 2014, 2015, 2016, 2017
12th International Semantic Web Conference - Evaluation Track, 2012
9th Extended Semantic Web Conference, 2012
Metadata and Semantics Research Conference, MTSR, 2012
Social Data and Semantic Web, Workshop of the 10th International Conference on Semantic Web
Workshop on LInked Data en Conferencia Española de la Asociación para La Inteligencia Artificial (CAEPIA, 2011)
Workshop on Software Engineering and eLearning (ISELEAR), 2010, 2011
Brazilian Symposium on Programming Languages (SBLP), 2003, 2004, 2005, 2006, 2007, 2008, 2009
Jornadas sobre Programación y Lenguajes (PROLE), 2008
International Conference on Web Engineering, ICWE, 2003, 2004, 2006
Fourth International Workshop on Language, Descriptions, Tools and Applications, 2004

Reviewer of papers in the following journals

Computer Standards and Interfaces, Reviewer, 2017
Bioinformatics, 2015
Computers and Human Behaviour, Reviewer, 2013-2016
Computers in Industry, Reviewer and Special issue editor, 2014
Telematics and Informatics, Reviewer, 2016, 2017
Expert Systems with Applications, Reviewer, 2017
Engineering Applications of Artificial Intelligence, reviewer, 2016
Information Sciences, reviewer, 2014
International Journal of Universal Computer Science, reviewer, 2013
Science of Computer Programming, reviewer, 2013
Semantic Web Journal, reviewer, 2013
Web Semantics: Science, Services and Agents on the World Wide Web, reviewer, 2013

Advisory board of the following publications

Global Hospitality and Tourism Management Technologies: Applications and Issues, Editors: Patricia Ordóñez de Pablos, R. Tennyson, and J-Y. Zhao, 2011, IGI-Global. Pp. 1-270 ISBN DOI: 10.4018 ⁄ 978 -1-61350-041-5, ISBN13: 978-1-61350-041-5, ISBN10: 1-61350-041-6
Semantic Web Personalization and Context Awareness: Management of Personal Identities and Social Networking, Editors: Lytras, M.D., Ordóñez de Pablos, P. and Damiani, E., IGI-Global, pp.1-232, 2011, DOI: 10.4018 ⁄ 978 -1-61520-921-7, ISBN13: 9781615209217, ISBN10: 1615209212, EISBN13: 9781615209224.
Digital Culture and E-Tourism: Technologies, Applications and Management Approaches, Editors: Lytras, M.D., Ordóñez de Pablos, P., Damiani, E. and Diaz, L. (2011), Editorial IGI-Global. Pp. 1-270. ISBN 9781615208678.
Technology Enhanced Learning for People with Disabilities: Approaches and Applications, Editors: Ordóñez de Pablos, P., Zhao, Y. and Tennyson, R., 2010, Editorial IGI-Global, pp- 1-276. ISBN-10: 1615209239 -ISBN-13: 978-1615209231. DOI: 10.4018 ⁄ 978 -1-61520-923-1

More personal information

I was the drummer of Kactus Jack. You can see the original unofficial home page, vintage style.

I was also the drummer of Los Murciélagos and Los Aborígenes.

I think I wrote my first Web Page in 1994. I found 2 versions of my home page from:

2003 (I found funny the Hobbies section…)
2013

Projects

Shapes-rs RDF data shapes implementation in Rust
WShEx Wikibase varaint of ShEx
rdfshape RDF playground
VARSSHA Validating RDF Streams using Shapes
SHACLex SHACL & ShEx implementation in Scala
ShExkell A preliminary implementation of ShEx in Haskell
Language Prototyping System This project was part of my PhD thesis where the main goal was to implement a system that could create programming languages by combining different semantic blocks. It was based on the use of monads and I was happy to build functional, imparative, logic and object oriented programming languages by combining those building blocks. The implementation was developed in Haskell.
Multilingual Linked Data Patterns Multilingual Linked Data Patterns

Teaching

I teach the following courses:

Software architecture - Bachelor of Software Engineering, University of Oviedo, Spain. This course is taught in Spanish and English.
Semantic Web - Master in Web Engineering, University of Oviedo, Spain
Advances in Semantic Web - Master in Web Engineering, University of Oviedo, Spain
Web systems and applications - Master in Information Technology, Technical University Federico Santa María, Chile I also taught the courses:
Languages and Web standards - Master in Web Engineering, University of Oviedo, Spain
Object Oriented Programming - Master in Web Engineering, University of Oviedo, Spain
Web services - Master in Web Engineering, University of Oviedo, Spain
Logic - Bachelor of Computer Science, University of Oviedo
Declarative Programming - Bachelor of Computer Science, University of Oviedo
Language Processors - EPIG