[, , and 4, June and October 1965] * by , Cambridge Language Research Unit, Cambridge, England The paper describes how the need for automatic aids to classification arose in a manual experiment in information retrieval. It goes on to discuss the problems of automatic classification in general, and to consider various methods that have been proposed. The definition of a particular kind of class, or "clump," is then put forward. Some programming techniques are indicated, and the paper concludes with a discussion of the difficulties of adequately evaluating the results of any automatic classification procedure. The . Information Retrieval Experiment Since the.
