Frequently a user's information needs are stored in the databases of multiple search
engines. It is inconvenient and inefficient for an ordinary user to invoke multiple search …

Description Logics are a family of knowledge representation languages that have been
studied extensively in Artificial Intelligence over the last two decades. They are embodied in …

Data integration is the problem of combining data residing at different sources, and
providing the user with a unified view of these data. The problem of designing data …

Assume that each object in a database has m grades, or scores, one for each of m attributes.
For example, an object can have a color grade, that tells how red it is, and a shape grade …

Application of data mining techniques to the World Wide Web, referred to as Web mining,
has been the focus of several recent research projects and papers. However, there is no …

The Internet presents numerous sources of useful information--telephone directories,
product catalogs, stock quotes, weather forecasts, etc. Recently, many systems have been …

UML is the de-facto standard formalism for software design and analysis. To support the
design of large-scale industrial applications, sophisticated CASE tools are available on the …

Data warehouses have captured the attention of practitioners and researchers alike. But the
design and optimization of data warehouses remains an art rather than a science. This book …

A number of ideas concerning information-integration tools can be thought of as constructing
answers to queries using views that represent the capabilities of information sources. We …

Integrating a large number of Web information sources may significantly increase the utility
of the World-Wide Web. A promising solution to the integration is through the use of a Web …