Presents a multilevel model of the information filtering process that permits document classification. Evaluates a document classification approach based on a supervised learning algorithm, measures the accuracy of the algorithm in a neural network that was trained to classify medical documents on cell biology, and discusses filtering…

Presents a compilation of definitions of information and other related terms including data, knowledge, impact, and development to organize and interrelate them. The goal is to provide members of the information science profession with a common basis for referring to key concepts. (Author/LRW)

Explores ways of writing the history of information infrastructures. Describes the historical development of the information infrastructure of the International Classification of Diseases (ICD), a universal medical classification system. Discusses changing medical information needs and the ICD's advancements in information technology and…

Describes an information retrieval system in which advanced natural language processing is used to enhance the effectiveness of term-based document retrieval by preprocessing the documents; discovering interterm dependencies and build a conceptual hierarchy specific to database domain; and processing the user's natural language requests into…

A consultation quality control model (CQCM) developed for an expert system (ES) integrated both ES performance measures and end-user judgment values. Simple decision theory concepts were used to design the CQCM. Results show end users belong to different categories characterized by utility functions and the weights they assign to ES consultation…

Reconstructs the paths that brought Western scientific publications to scientists in the Soviet Union between 1945 and 1953 at Academy of Sciences Institutes, universities, military laboratories, prison laboratories, and forced camps. Examines the effects that the conflict between the official position and the state's scientific needs had on…