Describes the PADOK-II project in Germany, which was designed to give information on the effects of linguistic algorithms on retrieval in a full-text database, the German Patent Information System (GPI). Relevance assessments are discussed, statistical evaluations are described, and searches are compared for the full-text section versus the…

Reports on a survey measuring the performance of a merging algorithm used to generate the now-defunct ULM (Union List of Monographs) file for ALEPH, Israel's research library network. Discusses automatic detection and merging of duplicate bibliographic records, problems created by lack of a standard for Hebrew spelling, and methods for measuring…

Describes experiments in Arabic information retrieval using 29 queries against a base of 355 bibliographic records. Using roots and stems as index terms worked better than words, and the root performed as well as or better than the stem at low recall levels and definitely better at high recall levels. (Contains 30 references.) (KRN)