The development of the Internet in recent years has made it possible and useful to access
many different information systems anywhere in the world to obtain information. While there …

In recent years, we have witnessed a revival of the use of recursive queries in a variety of
emerging application domains such as data integration and exchange, information …

A major factor hindering the deployment of a fully functional automatic facial expression
detection system is the lack of representative data. A solution to this is to narrow the context …

The first edition of this book appeared in 1991 when the technology was new and there were
not too many products. In the Preface to the first edition, we had quoted Michael Stonebraker …

Data exchange is the problem of taking data structured under a source schema and creating
an instance of a target schema that reflects the source data as accurately as possible. In this …

The increasing demand of matching and mapping tasks in modern integration scenarios has
led to a plethora of tools for facilitating these tasks. While the plethora made these tools …

Streaming data analysis has recently attracted attention in numerous applications including
telephone records, Web documents and click streams. For such analysis, single-pass …

A large number of information systems use many different individual schemas to represent
data. Semantically linking these schemas is a necessary precondition to establish …

On the Semantic Web, data will inevitably come from many different ontologies, and
information processing across ontologies is not possible without knowing the semantic …

Data exchange is the problem of taking data structured under a source schema and creating
an instance of a target schema that reflects the source data as accurately as possible. Given …