How does relevance ranking work and where is it available?
The only search method resulting in a relevance-ranked display is the Keyword search. In the multiple record display after a Keyword search, the display will include a column with a “Relevance” indicator; the most relevant items display first. The relevance is determined by four factors: • Uniqueness of search terms within the database. • Proximity of search terms to each other within the catalog record. • Number of different search terms present in a catalog record. Back to Questions • Why do some records have the legend “Library of Congress Holdings Information Not Available?” This legend displays on Online Catalog records in three general categories. First are items cataloged through the Cataloging in Publication program. For these, cataloging is created in advance of publication so that the publisher can print the catalog record in the published book. The Online Catalog does not include holdings information in these records until the Library receives the actual books. Second, there
