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This book constitutes the thoroughly refereed post-conference proceedings of the first International Workshop on Quality of Context, QuaCon 2009, held in Stuttgart, Germany, in June 2009. The 11 revised papers presented were carefully reviewed and selected from 19 submissions and included in the volume together with 5 invited papers. Discussed are interdisciplinary approaches to context quality, such as models for degradation and consistency of context data, spatial ontologies and spatial data mining, trust in context data, methods and calculi for context quality assessment, frameworks and metrics for context quality, uncertainty in sensor data processing, quality-aware algorithms for context management, quality-aware event and stream processing, uncertainty in reasoning on context data, application-specific context quality and case studies, and visualization of context quality.

Context-aware computing --- Electronic data processing --- Computer Science --- Engineering & Applied Sciences --- Quality control --- Geospatial data --- Uncertainty (Information theory) --- Data, Geospatial --- Computer science. --- Computer communication systems. --- Computers. --- Data mining. --- Information storage and retrieval. --- User interfaces (Computer systems). --- Computer Science. --- Information Storage and Retrieval. --- User Interfaces and Human Computer Interaction. --- Data Mining and Knowledge Discovery. --- Information Systems Applications (incl. Internet). --- Information Systems and Communication Service. --- Computer Communication Networks. --- Interfaces, User (Computer systems) --- Human-machine systems --- Human-computer interaction --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Informatics --- Science --- Distributed processing --- Geographic information systems --- Information storage and retrieva. --- Information systems. --- Information storage and retrieval systems. --- Automatic data storage --- Automatic information retrieval --- Automation in documentation --- Computer-based information systems --- Data processing systems --- Data storage and retrieval systems --- Discovery systems, Information --- Information discovery systems --- Information processing systems --- Information retrieval systems --- Machine data storage and retrieval --- Mechanized information storage and retrieval systems --- Electronic information resources --- Data libraries --- Digital libraries --- Information organization --- Information retrieval --- Application software. --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Interfícies d'usuari (Sistemes d'ordinadors) --- Sistemes experts (Informàtica) --- Sistemes basats en el coneixement (Informàtica) --- Sistemes experts --- Informàtica tova --- Sistemes d'informació --- Adquisició del coneixement (Sistemes experts) --- Sistemes tutorials intel·ligents --- Interfícies d'usuari (Informàtica) --- Sistemes persona-màquina --- Interfícies gràfiques d'usuari (Informàtica) --- Interacció persona-ordinador