Discussion of models for information retrieval focuses on an application of linear algebra to text clustering, namely, a metric for measuring cluster quality based on the theory that cluster quality is proportional to the number of terms that are disjoint across the clusters. Explains term-document matrices and clustering algorithms. (Author/LRW)

Describes the application of the General Purpose Utility Problem-Solving technique that was developed at the University of Technology, Sydney, to the problem experienced by a satellite university campus library where there were periodic shelving backlogs. Highlights include cluster methods, total quality management applications, and the use of…