Text mining (frequency analysis of terms in relevant records to inform search term selection and to rank output).subject search filters ( see Subject Search Filters) Check for existing search strategies, e.g.Google or a dictionary may identify additional terms.For an 'exploded' subject heading, include narrower subject headings found in the hierarchy as free-text terms.Often one or a combination of a few words is enough to capture many entry terms. MeSH, Emtree, CINAHL Heading databases) ( see Step 4). Look at Entry terms, Used for terms, Related terms mentioned in the subject heading databases (e.g.Subject headings need to be repeated as free-text terms. ![]()
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