Functional Definition of the INFOGENMED WORKSTATION: A Virtual Laboratory for Genetic Information Management in Clinical Environments. - Victor Maojo; Fernando Martín-Sánchez; N. Ibarrola; Guillermo López-Campos; José Crespo; D. Caja; J. M. Barreiros; Holger Billhardt (AMIA, 1999)

A New Method for Unifying Heterogeneous Databases. - Holger Billhardt; José Crespo; Victor Maojo; Fernando Martin; José Luis Maté (ISMDA, 2001)

Methods and Criteria for Detecting Significant Regions in Medical Image Analysis. - José Crespo; Holger Billhardt; Juan Rodríguez-Pedrosa; José A. Sanandrés (ISMDA, 2001)

A Comparison of Machine Learning Methods for the Diagnosis of Pigmented Skin Lesions. - Stephan Dreiseitl; Lucila Ohno-Machado; Harald Kittler; Staal Amund Vinterbo; Holger Billhardt; Michael Binder (J. Biomed. Informatics, 2001)

On the Strong Property of Connected Open-Close and Close-Open Filters. - José Crespo; Victor Maojo; José A. Sanandrés; Holger Billhardt (DGCI, 2002)

Using genetic algorithms to find suboptimal retrieval expert combinations. - Holger Billhardt; Daniel Borrajo; Victor Maojo (SAC, 2002)

A context vector model for information retrieval. - Holger Billhardt; Daniel Borrajo; Victor Maojo (J. Assoc. Inf. Sci. Technol., 2002)

A Virtual Approach to Integrating Biomedical Databases and Terminologies. - Victor Maojo; Miguel García-Remesal; Holger Billhardt; José Crespo; Fernando Martín-Sánchez; António Sousa Pereira (ISMDA, 2003)

Learning Retrieval Expert Combinations with Genetic Algorithms. - Holger Billhardt; Daniel Borrajo; Victor Maojo (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2003)

Fusión de modelos vectoriales y contextuales para la recuperación de información. - Holger Billhardt (2003)

ARMEDA II: Supporting Genomic Medicine through the Integration of Medical and Genetic Databases. - Miguel García-Remesal; Victor Maojo; Holger Billhardt; José Crespo; Raúl Alonso-Calvo; David Pérez-Rey; Fernando Martin; A. Sousa (BIBE, 2004)

Towards agent societies for information retrieval. - Holger Billhardt; Sascha Ossowski (SMC (6), 2004)

Integrating Trust in Virtual Organisations. - Ramón Hermoso; Holger Billhardt; Sascha Ossowski (COIN@AAMAS/ECAI, 2006)

Effective Use of Organisational Abstractions for Confidence Models. - Ramón Hermoso; Holger Billhardt; Roberto Centeno; Sascha Ossowski (ESAW, 2006)

ONTOFUSION: Ontology-based integration of genomic and clinical databases. - David Pérez-Rey; Victor Maojo; Miguel García-Remesal; Raúl Alonso-Calvo; Holger Billhardt; Fernando Martín-Sánchez; A. Sousa (Comput. Biol. Medicine, 2006)

Logical Schema Acquisition from Text-Based Sources for Structured and Non-Structured Biomedical Sources Integration. - Miguel García-Remesal; Victor Maojo; José Crespo; Holger Billhardt (AMIA, 2007)

SAT & ZB: Novel Tools to Acquire and Browse Conceptual Schemas from Public Online Databases for Biomedical Applications. - Miguel García-Remesal; Pedro Gil; Victor Maojo; Holger Billhardt; José Crespo (ER (Tutorials, Posters, Panels & Industrial Contributions), 2007)

Trust-based service provider selection in open environments. - Holger Billhardt; Ramón Hermoso; Sascha Ossowski; Roberto Centeno (SAC, 2007)

An agent- and ontology-based system for integrating public gene, protein, and disease databases. - Raúl Alonso-Calvo; Victor Maojo; Holger Billhardt; Fernando Martín-Sánchez; Miguel García-Remesal; David Pérez-Rey (J. Biomed. Informatics, 2007)

Extending virtual organizations to improve trust mechanisms. - Ramón Hermoso; Roberto Centeno; Holger Billhardt; Sascha Ossowski (AAMAS (3), 2008)

On the Relevance of Organizational Structures for a Technology of Agreement. - Holger Billhardt; Roberto Centeno; Alberto Fernández 002; Ramón Hermoso; Rubén Ortiz; Sascha Ossowski; Matteo Vasirani (OTM Workshops, 2008)

An Organisation-Based Multiagent System for Medical Emergency Assistance. - Roberto Centeno; Moser Silva Fagundes; Holger Billhardt; Sascha Ossowski; Juan M. Corchado; Vicente Julián; Alberto Fernández 002 (IWANN (1), 2009)

Supporting Medical Emergencies by MAS. - Roberto Centeno; Moser Silva Fagundes; Holger Billhardt; Sascha Ossowski (KES-AMSTA, 2009)

Designing Organized Multiagent Systems through MDPs. - Moser Silva Fagundes; Roberto Centeno; Holger Billhardt; Sascha Ossowski (MATES, 2009)

Dynamic Evolution of Role Taxonomies through Multidimensional Clustering in Multiagent Organizations. - Ramón Hermoso; Holger Billhardt; Sascha Ossowski (PRIMA, 2009)

Organising MAS: a formal model based on organisational mechanisms. - Roberto Centeno; Holger Billhardt; Ramón Hermoso; Sascha Ossowski (SAC, 2009)

Role evolution in Open Multi-Agent Systems as an information source for trust. - Ramón Hermoso; Holger Billhardt; Sascha Ossowski (AAMAS, 2010)

A Trust-Based Provider Recommender for Mobile Devices in Semantic Environments. - Helena Cebrián; Álvaro Higes; Ramón Hermoso; Holger Billhardt (DCAI, 2010)

Reasoning about Norm Compliance with Rational Agents. - Moser Silva Fagundes; Holger Billhardt; Sascha Ossowski (ECAI, 2010)

Normative Reasoning with an Adaptive Self-interested Agent Model Based on Markov Decision Processes. - Moser Silva Fagundes; Holger Billhardt; Sascha Ossowski (IBERAMIA, 2010)

Inducing Desirable Behaviour through an Incentives Infrastructure. - Roberto Centeno; Holger Billhardt; Sascha Ossowski (MATES, 2010)

Adaptive regulation of open MAS: an incentive mechanism based on modifications of the environment. - Roberto Centeno; Holger Billhardt (AAMAS, 2011)

Auto-Adaptation of Open MAS through On-Line Modifications of the Environment. - Roberto Centeno; Holger Billhardt (AAMAS Workshops, 2011)

An Adaptive Sanctioning Mechanism for Open Multi-agent Systems Regulated by Norms. - Roberto Centeno; Holger Billhardt; Ramón Hermoso (ICTAI, 2011)

Using Incentive Mechanisms for an Adaptive Regulation of Open Multi-Agent Systems. - Roberto Centeno; Holger Billhardt (IJCAI, 2011)

Organisational structures in next-generation distributed systems: Towards a technology of agreement. - Holger Billhardt; Roberto Centeno; Carlos E. Cuesta; Alberto Fernández 002; Ramón Hermoso; Rubén Ortiz; Sascha Ossowski; J. Santiago Pérez-Sotelo; Matteo Vasirani (Multiagent Grid Syst., 2011)

On Mobile Target Allocation with Incomplete Information in Defensive Environments. - Marin Lujak; Holger Billhardt; Sascha Ossowski (KES-AMSTA, 2012)

Lifecycle of Adaptive Agreements: A Pattern Language. - J. Santiago Pérez-Sotelo; Carlos E. Cuesta; Holger Billhardt; Sascha Ossowski (AT, 2013)

Persuading agents to act in the right way: An incentive-based approach. - Roberto Centeno; Holger Billhardt; Ramón Hermoso (Eng. Appl. Artif. Intell., 2013)

Trust-based role coordination in task-oriented multiagent systems. - Ramón Hermoso; Holger Billhardt; Sascha Ossowski (Knowl. Based Syst., 2013)

Optimizing Emergency Medical Assistance Coordination in After-Hours Urgent Surgery Patients. - Marin Lujak; Holger Billhardt; Sascha Ossowski (EUMAS, 2014)

Using Complex Event Processing to support data fusion for ambulance coordination. - Ralf Bruns; Jürgen Dunkel; Holger Billhardt; Marin Lujak; Sascha Ossowski (FUSION, 2014)

Easy Development and Use of Dialogue Services. - José Javier Durán; Alberto Fernández 002; Sara Rodríguez 001; Vicente Julián; Holger Billhardt (ISAmI, 2014)

An Architecture Proposal for Human-Agent Societies. - Holger Billhardt; Vicente Julián; Juan M. Corchado; Alberto Fernández 002 (PAAMS (Workshops), 2014)

Using Natural Interfaces for Human-Agent Immersion. - Angel Sanchis-Cano; Vicente Julián; Juan M. Corchado; Holger Billhardt; Carlos Carrascosa (PAAMS (Workshops), 2014)

Intelligent event processing for emergency medical assistance. - Holger Billhardt; Marin Lujak; Sascha Ossowski; Ralf Bruns; Jürgen Dunkel (SAC, 2014)

Dynamic Coordination in Fleet Management Systems: Toward Smart Cyber Fleets. - Holger Billhardt; Alberto Fernández 002; Lissette Lemus; Marin Lujak; Nardine Osman 001; Sascha Ossowski; Carles Sierra (IEEE Intell. Syst., 2014)

Dynamic coordination of ambulances for emergency medical assistance services. - Holger Billhardt; Marin Lujak; Vicente Sánchez-Brunete; Alberto Fernández 002; Sascha Ossowski (Knowl. Based Syst., 2014)

Towards Smart Open Dynamic Fleets. - Holger Billhardt; Alberto Fernández 002; Marin Lujak; Sascha Ossowski; Vicente Julián; Juan Francisco de Paz; Josefa Z. Hernández (EUMAS/AT, 2015)

Service discovery acceleration with hierarchical clustering. - Zijie Cong; Alberto Fernández 002; Holger Billhardt; Marin Lujak (Inf. Syst. Frontiers, 2015)

An Architecture for Situation-Aware Evacuation Guidance in Smart Buildings. - Holger Billhardt; Jürgen Dunkel; Marin Lujak; Alberto Fernández 002; Ramón Hermoso; Sascha Ossowski (AmILP@ECAI, 2016)

A Proposal for Situation-Aware Evacuation Guidance Based on Semantic Technologies. - Holger Billhardt; Jürgen Dunkel; Alberto Fernández 002; Marin Lujak; Ramón Hermoso; Sascha Ossowski (EUMAS/AT, 2016)

Distributed coordination of emergency medical service for angioplasty patients. - Marin Lujak; Holger Billhardt; Sascha Ossowski (Ann. Math. Artif. Intell., 2016)

An Ontology for Sharing Touristic Information. - Carmen Fernández; Alberto Fernández 002; Holger Billhardt (EUMAS/AT, 2017)

A Distributed Algorithm for Dynamic Break Scheduling in Emergency Service Fleets. - Marin Lujak; Holger Billhardt (PRIMA, 2017)

Coordinating open fleets. A taxi assignment example. - Holger Billhardt; Alberto Fernández 002; Marin Lujak; Sascha Ossowski; Vicente Julián; Juan F. De Paz; Josefa Z. Hernández (AI Commun., 2017)

A distributed architecture for real-time evacuation guidance in large smart buildings. - Marin Lujak; Holger Billhardt; Jürgen Dunkel; Alberto Fernández 002; Ramón Hermoso; Sascha Ossowski (Comput. Sci. Inf. Syst., 2017)

Balancing Strategies for Bike Sharing Systems. - Alberto Fernández 002; Holger Billhardt; Sandra Timón; Carlos Ruiz; Óscar Sánchez; Iván Bernabé Sánchez (AT, 2018)

Dynamic Delivery Plan Adaptation in Open Systems. - Miguel Ángel Rodríguez-García; Alberto Fernández 002; Holger Billhardt (AT, 2018)

A Bike Sharing System Simulator. - Alberto Fernández 002; Sandra Timón; Carlos Ruiz; Tao Cumplido; Holger Billhardt; Jürgen Dunkel (PAAMS (Workshops), 2018)

Provider Recommendation in Heterogeneous Transportation Fleets. - Miguel Ángel Rodríguez-García; Alberto Fernández 002; Holger Billhardt (PAAMS (Workshops), 2018)

Designing a goal-oriented smart-home environment. - Javier Palanca; Elena del Val; Ana García-Fornes; Holger Billhardt; Juan Manuel Corchado; Vicente Julián (Inf. Syst. Frontiers, 2018)

Taxi dispatching strategies with compensations. - Holger Billhardt; Alberto Fernández 002; Sascha Ossowski; Javier Palanca; Javier Bajo (Expert Syst. Appl., 2019)

Legal Implications of Novel Taxi Assignment Strategies. - Holger Billhardt; José-Antonio Santos; Alberto Fernández 002; Mar Moreno-Rebato; Sascha Ossowski; José A. Rodríguez-García (PAAMS (Workshops), 2020)

Legal and ethical implications of applications based on agreement technologies: the case of auction-based road intersections. - José-Antonio Santos; Alberto Fernández 002; Mar Moreno-Rebato; Holger Billhardt; José A. Rodríguez-García; Sascha Ossowski (Artif. Intell. Law, 2020)

Bike3S: A tool for bike sharing systems simulation. - Alberto Fernández 002; Holger Billhardt; Sascha Ossowski; Óscar Sánchez (J. Simulation, 2020)

Reducing Emissions Prioritising Transport Utility. - Holger Billhardt; Alberto Fernández 002; Sandra Gómez-Gálvez; Pasqual Martí; Javier Prieto Tejedor; Sascha Ossowski (SSCT, 2021)

Infrastructure for the Enhancement of Urban Fleet Simulation. - Pasqual Martí; Jaume Jordán; Fernando De la Prieta; Holger Billhardt; Vicente Julián (SSCT, 2021)

On Balancing Fairness and Efficiency in Routing of Cooperative Vehicle Fleets. - Aitor López Sánchez; Marin Lujak; Frédéric Semet; Holger Billhardt (ATT@IJCAI, 2022)

Towards Semantic Modelling of the Edge-Cloud Continuum. - Iván Bernabé Sánchez; Alberto Fernández 002; Holger Billhardt; Sascha Ossowski (PAAMS (Workshops), 2022)

Dynamic Algorithm for on-the-Fly Work and Break Balancing in Emergency Fleets. - Marin Lujak; Holger Billhardt (SMC, 2022)

Streamlining advanced taxi assignment strategies based on legal analysis. - Holger Billhardt; José-Antonio Santos; Alberto Fernández 002; Mar Moreno; Sascha Ossowski; José A. Rodríguez-García (Neurocomputing, 2022)

Vehicle Routing Problem with Fair Profits and Time Windows (VRP-FPTW). - Aitor López Sánchez; Marin Lujak; Frédéric Semet; Holger Billhardt (SMC, 2023)

Algorithms for Learning Value-Aligned Policies Considering Admissibility Relaxation. - Andrés Holgado-Sánchez; Joaquín Arias; Holger Billhardt; Sascha Ossowski (VALE, 2023)

Exploiting Value System Structure for Value-Aligned Decision-Making. - Marcelo Karanik; Holger Billhardt; Alberto Fernández 002; Sascha Ossowski (VALE, 2023)

On Value-Aligned Cooperative Multi-agent Task Allocation. - Marin Lujak; Alberto Fernández 002; Holger Billhardt; Sascha Ossowski; Joaquín Arias; Aitor López Sánchez (VALE, 2023)

Problem Detection in the Edge of IoT Applications. - Iván Bernabé Sánchez; Alberto Fernández 002; Holger Billhardt; Sascha Ossowski (Int. J. Interact. Multim. Artif. Intell., 2023)

An Ontology for Value Awareness Engineering. - Andrés Holgado-Sánchez; Holger Billhardt; Sascha Ossowski; Alberto Fernández 002 (ICAART (3), 2024)

On the relevance of value system structure for automated value-aligned decision-making. - Marcelo Karanik; Holger Billhardt; Alberto Fernández 002; Sascha Ossowski (SAC, 2024)

Value Learning for Value-Aligned Route Choice Modeling via Inverse Reinforcement Learning. - Andrés Holgado-Sánchez; Javier Bajo; Holger Billhardt; Sascha Ossowski; Joaquín Arias (VALE, 2024)

How to achieve fair and efficient cooperative vehicle routing? - Aitor López Sánchez; Marin Lujak; Frédéric Semet; Holger Billhardt (AI Commun., 2024)

Agreement Technologies for Coordination in Smart Cities. - Holger Billhardt; Alberto Fernández 002; Marin Lujak; Sascha Ossowski (CoRR, 2024)

Smart Recommendations for Renting Bikes in Bike Sharing Systems. - Holger Billhardt; Alberto Fernández 002; Sascha Ossowski (CoRR, 2024)

Towards a prioritised use of transportation infrastructures: the case of vehicle-specific dynamic access restrictions to city centres. - Holger Billhardt; Alberto Fernández 002; Pasqual Martí; Javier Prieto Tejedor; Sascha Ossowski (CoRR, 2024)

Dynamic, fair, and efficient routing for cooperative autonomous vehicle fleets. - Aitor López Sánchez; Marin Lujak; Frédéric Semet; Holger Billhardt (Expert Syst. Appl., 2024)

Learning the Value Systems of Societies from Preferences. - Andrés Holgado-Sánchez; Holger Billhardt; Sascha Ossowski; Sara Degli-Esposti (CoRR, 2025)