Glossary about Controlled Vocabularies tematres thesaurus, thesauri, information retrieval, controlled vocabularies, glossary, definitions, structured vocabularies, facets, faceted classification 1998-12-31 2011-12-13 10:39:06 en recall A measure of a search system's effectiveness in terms of retrieving all results that are possibly relevant, expressed as the ratio of the number of relevant records or documents retrieved over all the relevant records or documents. A high recall search retrieves a comprehensive set of relevant results; however, it also increases the likelihood that marginally relevant content objects will also be retrieved. Recall and precision are inverse ratios. 2011-08-16 23:06:52