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This volume collects selected contributions on the application of heterogeneous methods for managing uncertainty and imprecision in databases. It contains both survey chapters on classic topics such as "flexible querying in databases", and up to date ontributions on "database models to represent imperfect data". Further, it includes specific contributions on uncertainty management in database integration, and in representing and querying semistructured and spatial data. These topics are of particular relevance nowadays with the diffusion of the internet since, most of the time, applications require information spread across several information sources and their integration may result in inconsistent information. Semistructured information querying often calls for the application of approximate matching techniques, and spatial information is often incomplete and imprecise. Reading this volume can serve as a guide to students for having a panoramic view of the methods to manage uncertainty and imprecision in databases proposed so far, to researchers to focus on the most up to date research trends, and to practitioners for having examples in which current databases incorporate flexible functionalities for the management of uncertainty and imprecision.

Database management. --- Database searching. --- Question-answering systems. --- Bases de données --- Gestion --- Interrogation --- Electronic books. -- local. --- Database management --- Database searching --- Question-answering systems --- Engineering & Applied Sciences --- Civil & Environmental Engineering --- Applied Mathematics --- Civil Engineering --- Computer Science --- Data base searching --- Database search strategies --- Search strategies in databases --- Searching databases --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Engineering. --- Artificial intelligence. --- Applied mathematics. --- Engineering mathematics. --- Computational intelligence. --- Appl.Mathematics/Computational Methods of Engineering. --- Artificial Intelligence (incl. Robotics). --- Database Management. --- Applications of Mathematics. --- Computational Intelligence. --- Electronic data processing --- Intelligence, Computational --- Artificial intelligence --- Soft computing --- Engineering --- Engineering analysis --- Mathematical analysis --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Cognitive science --- Digital computer simulation --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers --- Construction --- Industrial arts --- Technology --- Mathematics --- Problem solving --- Electronic information resource searching --- Mathematics. --- Mathematical and Computational Engineering. --- Artificial Intelligence. --- Math --- Science

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Office management --- Distribution strategy --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- bedrijfseconomie --- informatica --- maatschappij --- bedrijfsadministratie --- informatiesystemen --- database management --- e-commerce --- informatica management

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This book constitutes the refereed proceedings of the 8th International Conference on Electronic Commerce and Web Technologies, EC-Web 2007, held in Regensburg, Germany, September 3-7, 2007 in conjunction with Dexa 2007. The 22 revised full papers presented were carefully reviewed and selected from 67 submissions. The papers are organized in topical sections on recommender systems, business process / design aspects, mobile commerce, security and e-payment, Web services computing / semantic Web, e-negotiation and agent mediated systems, and issues in Web advertising.

Office management --- Distribution strategy --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- bedrijfseconomie --- informatica --- maatschappij --- bedrijfsadministratie --- informatiesystemen --- database management --- e-commerce --- informatica management

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This book constitutes the refereed proceedings of the 9th International Conference on Electronic Commerce and Web Technologies, EC-Web 2008, held in Turin, Italy, in September, 2008 in conjunction with Dexa 2008. The 12 revised full papers presented together with 2 invited papers were carefully reviewed and selected from numerous submissions. The papers are organized in five topical sessions on security in e-commerce, social aspects of e-commerce, business process and EC infrastructures, recommender systems and e-negotiations, and Web marketing and user profiling.

Electronic commerce --- Software engineering --- Internet --- World Wide Web --- Data mining. --- Information theory. --- Computer science. --- Information systems. --- Computer Engineering. --- Data Mining and Knowledge Discovery. --- Theory of Computation. --- Information Systems Applications (incl. Internet). --- Computers and Society. --- Computer Appl. in Administrative Data Processing. --- Informatics --- Science --- Communication theory --- Communication --- Cybernetics --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Computer engineering. --- Computers. --- Application software. --- Computers and civilization. --- Civilization and computers --- Civilization --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Machine theory --- Calculators --- Cyberspace --- Computers --- Design and construction --- Electronic commerce - Congresses --- Software engineering - Congresses --- Internet - Congresses --- World Wide Web - Congresses

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Artificial intelligence. --- Artificial intelligence --- Data mining. --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Cognitive science --- Digital computer simulation --- Electronic data processing --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers