Bøger af Adnan Yazici

This book constitutes the refereed proceedings of the 8th International Conference on Flexible Query Answering Systems, FQAS 2011, held in Roskilde, Denmark, in October 2011. The 43 papers included in this volume were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on logical approaches to flexible querying, fuzzy logic in spatial and temporal data modeling and querying, knowledge-based approaches, multimedia, data fuzziness, reliability and trust, information retrieval, preference queries, flexible querying of graph data, ranking, ordering and statistics, query recommendation and interpretation, as well as on fuzzy databases and applications (8 papers presented in a special session).

The International Symposium on Computer and Information Sciences (ISCIS) brought together researchers and practitioners from all over the world to - change ideas and experiences on their recent research in all areas of the c- puter and information sciences. This year, the 18th ISCIS was organized by the Department of Computer Engineering at the Middle East Technical University, and was held in Antalya, Turkey. This year was the ?rst in which the proceedings of ISCIS were published in the LNCS series by Springer-Verlag. The proceedings include 135 papers that were selected by the program committee from over 360 contributions submitted from 25 di?erent countries. Thesymposiumthisyearcoveredthefollowingtopicsinthecomputerand- formationsciences:architecturesandsystems,computersciencetheory,databases and information retrieval, e-business, graphics and computer vision, intelligent systemsandrobotics,multimedia,networksandsecurity,parallelanddistributed computing, soft computing, and software engineering. The support from the following institutions is deeply appreciated: - METU (Middle East Technical University) ¿ ? - TUBITAK (Scienti?c and Technical Research Council of Turkey) - IEEE, Turkey Section - IFIP (International Federation for Information Processing) I must also express my sincere thanks to all the people who contributed their time and great e?ort to make the symposium possible. My very special thanks ? go to the organizing committee, namely Semra Do? ganda? g, Sertan Girgin, Ismail ¿ Ozturk, ¿ Ahmet Sä can and Cevat S ¿ener, who did very active and endless work and put tremendous e?ort into the symposium. I also thank many other c- leagues for their special contributions to the symposium.

Some recent fuzzy database modeling advances for the non-traditional applications are introduced in this book. The focus is on database models for modeling complex information and uncertainty at the conceptual, logical, physical design levels and from integrity constraints defined on the fuzzy relations. The database models addressed here are; the conceptual data models, including the ExIFO and ExIFO2 data models, the logical database models, including the extended NF2 database model, fuzzy object-oriented database model, and the fuzzy deductive object-oriented database model. Integrity constraints are defined on the fuzzy relations are also addressed. A continuing reason for the limited adoption of fuzzy database systems has been performance. There have been few efforts at defining physical structures that accomodate fuzzy information. A new access structure and data organization for fuzzy information is introduced in this book.

Some recent fuzzy database modeling advances for the non-traditional applications are introduced in this book. the conceptual data models, including the ExIFO and ExIFO2 data models, the logical database models, including the extended NF2 database model, fuzzy object-oriented database model, and the fuzzy deductive object-oriented database model.