Presents an evaluation model that is appropriate to the assessment of the effect, from the perspective of the user, of variations in the interface to an information retrieval system. The application of the model to the evaluation of an experimental online catalog is described. (11 references) (Author/CLB)

Presents a measure of the relative standing of professional journals in an aggregated journal citation matrix. The results of the application of the measure to a network of geographic journals during two time periods are reported and discussed. (35 references) (Author/CLB)

Describes a computational model of the human process of generating text. The system design and generation process are discussed with particular attention to domain independence and cross language portability. The results of system tests are presented, the generator is evaluated with respect to current generators, and future directions are…

Presents a model for information retrieval evaluation based on the notion of total relevance, a function derived from the traditional summation of relevance ratings over the documents in a collection. The model makes explicit the perceptual underpinnings of relevance assessments while allowing for consideration of interdocument dependencies. (37…