Describes a cluster-based information retrieval procedure that can significantly reduce the computational requirements of the single linkage method, while still maintaining the retrieval effectiveness of the resulting classifications. Use of nearest neighbors, experimental details, and results and conclusions are highlighted. Fourteen references…

Argues that co-citation methods combine citing behavior of authors by assuming they share common view of scientific literature which affects assessments of dimensionality and clustering of articles. Co-citation matrices, effects of shared point-of-view assumption, and co-citation compared with bibliographic coupling and centroid scaling are…

Six issues to consider when colleges make placement decisions for prestudent teaching and student teaching are diversity, collaboration, cooperating teacher preparation, challenging beliefs, mentor matching, and clustering. A study of current North American placement practices is examined. Implications of the six considerations for teacher…