Quality of Context | First International Workshop, QuaCon 2009, Stuttgart, Germany, June 25-26, 2009. Revised Papers. Este artículo no está disponible.Quality of Context | First International Workshop, QuaCon 2009, Stuttgart, Germany, June 25-26, 2009. Revised Papers

Advances in sensor technology, wireless communication, and mobile devices lead to the proliferation of sensors in our physical environment. At the same time detailed digital models of buildings, towns, or even the globe become widely available. Integrating the huge amount of sensor data into spatial models results in highly dynamic models of the real world, often called context models. A wide range of applications can substantially bene?t from context models. However, context data are inherently associated with uncertainty. In general, quality of context information has to be taken into account by both context management and applications. For example, the accuracy, completeness, and trustworthiness of spatial context information such as street or building data are very important for navigation and guidance systems. QuaCon 2009 was the ?rst international scienti?c meeting that speci?cally focused on the di?erent aspects of quality of context data. Research in context management and, in particular, context quality, requires an interdisciplinary approach. Therefore, the QuaCon workshop aimed to bring together researchers fromvarious?eldstodiscussapproachestocontextqualityandtomakeacons- idated contribution toward an integrated way of treating this topic. We received 19 high-quality paper submissions by researchers from Europe, USA, and Asia. TheInternationalProgramCommitteeselected11papersforpresentationatthe workshop. Additionally, ?ve invited contributions by internationally renowned expertsin the ?eldwereincludedinthe workshopprogram.Thepresentationsat the workshop showed many facets of quality of context from di?erent research ?elds including context data management, spatial models, context reasoning, privacy, and system frameworks. The lively discussions underlined the great - terestinthistopicandinparticularledtoadeeperunderstandingoftherelations between the various aspects of quality of context.

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.