Evaluative studies on the effectiveness of full text retrieval argue for sophisticated search techniques. Current thinking concludes that bibliographic information retrieval systems should allow both natural- language and controlled vocabulary searching. Thesaurus based query expansion questioned. Subject and known-item searches result in high user failure rates. Reported user satisfaction does not imply true success.
Users prefer easy to use, quickly learned, and inexpensive search systems.
Browse lists of Headings, Author Entries, Controlled Vocabulary terms. Limit to selected, multiple SGML defined Fields. Stemming of terms. Search modify mechanism without user-entered explicit Boolean and Proximity operators. Multimedia demonstrations of search types.