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…

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…

Analyzes a neural network for its ability to perform a task involving identification of the language entries in a 19th-century library catalog containing entries in 14 different languages. Compares the neural network's performance with that of trigrams and a suffix/morphology analysis; the trigrams prove to be superior. (AEF)