We consider a set of views stating possibly conflicting facts. Negative facts in the views may
come, eg, from functional dependencies in the underlying database schema. We want to …

8 Completeness-Driven Query Optimization Page 1 8 Completeness-Driven Query
Optimization Completeness measures the usefulness of a source or of a plan to answer a …

We are often thrilled by the abundance of information surrounding us and wish to integrate
data from as many sources as possible. However, understanding, analyzing, and using …

In cooperative information systems, the quality of data exchanged and provided by different
data sources is extremely important. A lack of attention to data quality can imply data of low …

The issue of data quality is increasingly important as individuals as well as corporations are
relying on multiple, often external sources of data to make decisions. Traditional query …

The main purpose of this paper is to examine the continuance intention (CI) of citizens in
following government Facebook page. Applying theories of expectation-confirmation, and …

Pervasive environments generate large quantities of data, originating from backend servers,
portable devices, and wireless mobile sensors. Pervasive sensing devices that monitor …

In a context of Data Integration Systems (DIS) providing access to large amounts of data
extracted and integrated from autonomous data sources, users are highly concerned about …

Data integration is a challenging task due to the large numbers of autonomous data sources.
This necessitates the development of techniques to reason about the benefits and costs of …

Over the past few years, techniques for managing, querying, and integrating data on the
Web have significantly matured. Well-founded and practical approaches to assess or even …