This volume contains the proceedings of the Sixth International Conference on Knowledge Engineering and Ontology Development (KEOD 2014) which was sponsored by the Institute for Systems and Technologies of Information, Control and Communication (INSTICC) and held in Rome, Italy. KEOD was organized in cooperation with the AAAI - Association for the Advancement of Artificial Intelligence, iKMS - Information & Knowledge Management Society, ERCIM - European Research Consortium for Informatics and Mathematics, ACM SIGMIS - ACM Special Interest Group on Management Information Systems and ACM SIGART - ACM Special Interest Group on Artificial Intelligence. The main objective of the International Conference on Knowledge Engineering and Ontology Development is to provide a point of contact for scientists, engineers and practitioners interested in the scientific and technical advancement of methodologies and technologies for Knowledge Engineering and Ontology Development both theoretically
and in a broad range of application fields. Knowledge Engineering (KE) refers to all technical, scientific and social aspects involved in building, maintaining and using knowledge-based systems. KE is a multidisciplinary field, bringing in concepts and methods from several computer science domains such as artificial intelligence, databases, expert systems, decision support systems and geographic information systems. From the software development point of view, KE uses principles that are strongly related to software engineering. KE is also related to mathematical logic, as well as strongly involved in cognitive science and socio-cognitive engineering where the knowledge is produced by humans and is structured according to our understanding of how human reasoning and logic works. Currently, KE is gradually more related to the construction of shared conceptual frameworks, often designated as ontologies. Ontology Development (OD) aims at building reusable semantic structures that can be informal vocabularies, catalogs, glossaries as well as more complex finite formal structures representing the entities within a domain and the relationships between those entities. Ontologies have been gaining interest and acceptance in computational audiences. For example, formal ontologies are increasingly used as one of the main sources to software development and methodologies for this end can be adapted to include ontology development. A wide range of applications is emerging, especially given the current web emphasis, including library science, ontology-enhanced search, e-commerce and business process design. KEOD aims at becoming a major meeting point for researchers and practitioners interested in the study and development of methodologies and technologies for Knowledge Engineering and Ontology Development. As always KEOD is one of the three integrated conferences that are co-located and constitute the International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management (IC3K). The other two are KDIR - International Conference on Knowledge Discovery and Information Retrieval and KMIS - International Conference on Knowledge Management and Information Sharing. KEOD 2014 received 76 paper submissions from 30 countries in all continents, of which 18% were accepted as full papers. The high quality of the papers received imposed difficult choices in the review process. To evaluate each submission, a double blind paper review was performed by the Program Committee, whose members are highly qualified independent researchers in the KEOD topic areas. Moreover, the conference also featured a number of keynote lectures delivered by internationally well known experts, namely Domenico Talia (University of Calabria and ICAR-CNR, Italy), Sonia Bergamaschi (DIEF - University of Modena and Reggio Emilia, Italy), Michele Missikoff (CNR and Polytechnic University of Marche, Italy), Wil Van Der Aalst (Technische Universiteit Eindhoven, Netherlands), Wim Van Grembergen (University of Antwerp, Belgium) and Marie-Jeanne Lesot (Université Pierre et Marie Curie - LIP6, France), thus contributing to increase the overall quality of the conferences and to provide a deeper understanding of the conferences interest fields. Workshops provide interactive fora that allow for a more in-depth discussion of particular areas within the scope of the conference. We would like to thank the workshop chairs for their collaboration in providing this added-value satellite event of IC3K 2014 namely: 5th International Workshop on Software Knowledge – SKY (chaired by Iaakov Exman, Juan Llorens, Anabel Fraga and Juan Miguel Gómez). To recognize the best submissions and the best student contributions, awards based on the best combined marks of paper reviewing, as assessed by the Program Committee, and the quality of the presentation, as assessed by session chairs at the conference venue, were conferred at the closing session of the conference. All presented papers will be submitted for indexation by Thomson Reuters Conference Proceedings Citation Index (ISI), INSPEC, DBLP, EI (Elsevier Index) and Scopus, as well as being made available at the SCITEPRESS Digital Library. Additionally, a short list of presented papers will be selected to be expanded into a forthcoming book of IC3K Selected Papers to be published by Springer Verlag. Building an interesting and successful program for the conference required the dedicated effort of many people. We would like to express our thanks, first of all, to all authors including those whose papers were not included in the program. We would also like to express our gratitude to all members of the Program Committee and auxiliary reviewers, who helped us with their expertise and valuable time. Furthermore, we thank the invited speakers for their invaluable contribution and for taking the time to synthesize and prepare their talks. Moreover, we thank the workshop and special session chairs whose contribution to the diversity of the program was decisive. Finally, we gratefully acknowledge the professional support of the INSTICC team for all organizational processes.
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