Provides a new answer to the resource discovery problem, which arises
because although the Internet makes it possible for users to retrieve
enormous amounts of information, it provides insufficient support for
locating the specific information that is needed. ALIBI (Adaptive Loca
tion of Internet-worked Bases of Information) is a new tool that succe
eds in locating information without the use of centralized resource ca
talogs, navigation, or costly searching. Its powerful query-based inte
rface eliminates the need for the user to connect to one network site
after another to find information or to wrestle with overloaded centra
lized catalogs and archives. This functionality was made possible by a
n assortment of significant new algorithms and techniques, including c
lassification-based query routing, fully distributed cooperative cachi
ng, and a query language that combines the practicality of Boolean log
ic with the expressive power of text retrieval. The resulting informat
ion system is capable of providing fully automatic resource discovery
and retrieval access to a limitless variety of information bases.