Information retrieval (IR) has changed considerably in recent years with the expansion of the
World Wide Web and the advent of modern and inexpensive graphical user interfaces and …

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 …

With the huge amount of information available online, the World Wide Web is a fertile area
for data mining research. The Web mining research is at the cross road of research from …

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 pages and hyperlinks of the World-Wide Web may be viewed as nodes and edges in a
directed graph. This graph is a fascinating object of study: it has several hundred million …

The Web harbors a large number of communities—groups of content-creators sharing a
common interest—each of which manifests itself as a set of interlinked Web pages …

The amount of data of all kinds available electronically has increased dramatically in recent
years. The data resides in different forms, ranging from unstructured data in file systems to …

In semistructured data, the information that is normally associated with a schema is
contained within the data, which is sometimes called “self-describing”. In some forms of …

Lorel language, designed for querying semistructured data. Semistructured data is
becoming more and more prevalent, eg, in structured documents such as HTML and when …

Extracting data from web pages. User input is received defining a tabular form. User input is
received correlating portions of the form with user selected data items contained in one or …