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Don't miss important references
- 2. Don’t Miss Important References! • When you are new to literature searching it’s easy to miss important references. • Here’s a few simple techniques to use when searching databases that should help you to find most of the references you need. RDF InformationLiteracy http://www.library.qmul.ac.uk/
- 3. Wildcard Characters and Truncation RDF InformationLiteracy http://www.library.qmul.ac.uk/ Use wildcards (*, ?, $) for word variations, e.g. singular / plural, nouns / verbs, UK / US spellings The asterisk (*) represents any group of characters, including no character The question mark (?) represents any single character The dollar sign ($) represents zero or one character
- 4. Wildcard Characters and Truncation RDF InformationLiteracy http://www.library.qmul.ac.uk/ Some Examples:
- 5. Phrase Searching RDF InformationLiteracy http://www.library.qmul.ac.uk/ To search for an exact phrase, enclose the phrase in quotation marks For example, the search query "energy conservation" will retrieve all references that contain the exact phrase energy conservation
- 6. Boolean Operators RDF InformationLiteracy http://www.library.qmul.ac.uk/ Use Boolean operators to combine your search terms (e.g. AND, OR, NOT, NEAR, etc)
- 8. Controlled Vocabulary RDF InformationLiteracy http://www.library.qmul.ac.uk/ Find any controlled vocabulary available for the subject area you are researching People who index information for a database will use controlled vocabulary from a list of keywords, often listed online, to: • Provide a consistent method of finding information that uses different terms for the same concepts • Find information on a broader or narrower aspect of a particular subject
- 9. Controlled Vocabulary RDF InformationLiteracy http://www.library.qmul.ac.uk/ • There are two main kinds of controlled vocabulary tools used in databases: subject headings and thesaurus terms
- 10. Controlled Vocabulary RDF InformationLiteracy http://www.library.qmul.ac.uk/ Subject Headings • Describe the main focus of the content of a publication • Provide terms which bring together different ways of defining a subject e.g. MESH subject headings from the PubMed database
- 11. Controlled Vocabulary RDF InformationLiteracy http://www.library.qmul.ac.uk/ Thesaurus Terms • Thesauri list words grouped together according to similarity of meaning • Thesauri list not only equivalent terms but also narrower, broader terms and related terms e.g. Thesaurus terms from the Compendex database
- 12. Conclusion RDF InformationLiteracy http://www.library.qmul.ac.uk/ In order to avoid missing important references, use these search techniques – either singly, or by combining them in a search: • Wildcard characters and truncation • Phrase searching • Boolean search operators • Controlled vocabulary (subject headings and thesaurus terms)