Provides an overview of robots that retrieve World Wide Web documents and index data and then store it in a database. Nine robot-generated databases are described, including record content, services, search features, and sample search results; and sidebars discuss the controversy about Web robots and other resource discovery tools. (LRW)

This paper addresses bibliographic services in the 21st century. The paper begins by reviewing achievements of the past 30 years, including Universal Bibliographic Control (UBC), MARC, International Standard Bibliographic Description (ISBD), and the Anglo-American Cataloguing Rules, 2nd edition (AACR2). The cataloging of electronic resources is…

Analyzes key problems associated with representation of the intellectual content of digital objects. Presents a framework for analysis based on Peirce's notion of unlimited semiosis. This analysis is based on the assumption that every element in the subject indexing process could be regarded a sign. (AEF)