Two tables compare projected costs of online versus offline retrieval of citations from 50 databases using BRS and DIALOG. Data include database; databank; cost of access per hour; cost of 15-minute search with no retrieval; and cost of 15-minute search plus cost of 10 and 30 online or offline citations. (CLB)

This paper considers the processing of digital library queries, consisting of a text component and a structured component in distributed environments. The paper concentrates on the processing of the structured component of a distributed query. A method is proposed to identify the databases that are likely to be useful for processing any given…

An obvious and natural approach to organizing a large corpus of data is a hierarchical index--akin to a book's table of contents. The type of corpus dealt with here is a bibliographical repository, with entries form a limited domain. Given such an index, it is desirable that search results point to relevant locations in the hierarchy, rather than…