I have just written a textbook chapter on User Interfaces and
Visualization for information access systems.  It will appear in

   Modern Information Retrieval, edited by Ricardo Baeza-Yates and
   Berthier Ribeiro-Neto, Addison-Wesley Longman Publishing Company
   (http://www2.awl.com) (to appear Spring 99).

The UI chapter assumes the reader has learned about ranking algorithms
and data structures from other chapters in the book.

The chapter can be found online at http://www.sims.berkeley.edu/~hearst
The online version does not contain images yet.

There is no tried-and-true answer to the question of what should
appear in search results listings.  I found the search discussion in
the Rosenfeld and Morville book ("Architecture for the World Wide
Web") to be clear and useful for beginners, but found their account of
relevance ranking to be naive.

Marti Hearst

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Marti Hearst                    UC Berkeley (SIMS)
Assistant Professor             School of Information Management & Systems
510-642-8016 Office             102 South Hall
510-642-5814 Fax                Berkeley, CA 94720-4600
[log in to unmask]        http://www.sims.berkeley.edu/~hearst