ZURÜCK

Abb. 2: Number of documents found in INSPEC with different queries for the time interval January - June 1995

Query Number of documents found
RETRIEVAL SYSTEMS and MULTIMEDIA and IMAGES 3
RETRIEVAL SYSTEMS and MULTIMEDIA and IMAGE$ 5
RETRIEVAL and MULTIMEDIA and IMAGE$ 35
RETRIEVAL and MULTIMEDIA 148
RETRIEVAL or MULTIMEDIA 2559
RETRIEVAL or MULTIMEDIA or IMAGE$ 9364

This query contains terms connected by the Boolean operators "and" and "or". If two terms are connected by "and" those documents are selected that contain both terms; if they are connected by "or" documents that contain either the first one or the second one or both are selected. This means in particular, that result sets from term connected by "or" include the result sets of a query in which the same terms are connected by "and".


ZURÜCK

© 1998 / HTML-Version 17. 11. 1998: R. Ferber