Query Performance for Tightly Coupled Distributed Digital Libraries

We consider a digital library distributed in a tightly coupled environment. The library is indexed by inverted files and the vector space model is used as ranking strategy. Using a simple analytical model coupled with a small simulator, we study how query performance is affected by the index organization, the network speed, and the disks transfer rate. Our results, which are based on the Tipster/Trec3 collection, indicate that a global index organization might outperform a local index organization.

• Type: Conference
• Year: 1998
• Where: DL
• Authors: Berthier A. Ribeiro-Neto, Ramurti A. Barbosa
• Keywords: Digital Library, DL 1998, Index Organization, Simple Analytical Model, Vector Space Model