1 / 25

Advanced Search Strategies Information Skills tutorial

Advanced Search Strategies Information Skills tutorial. Learning Resource Centre Information Services. What this tutorial covers. searching electronically defining your search search strings operators expanding/narrowing searches electronic resources. Your aim….

lynne
Télécharger la présentation

Advanced Search Strategies Information Skills tutorial

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Advanced Search StrategiesInformation Skills tutorial Learning Resource Centre Information Services

  2. What this tutorial covers • searching electronically • defining your search • search strings • operators • expanding/narrowing searches • electronic resources

  3. Your aim…. • to get a small number of • relevant • specific • quality results….

  4. Define your search • do a pre-search analysis • list: • topic • key words • synonyms (similar words) • spellings (e.g. Americanisms) • broader terms

  5. Search strings • a phrase put together for searching is called asearch string • example: "sustainable development" and ecology and ecosystems not forests

  6. Operators to aid searching • quotation marks • limiting • wildcards • brackets • Boolean operators

  7. Quotation marks • for phrases • finds words next to each other • “wild flowers” • “landscape design” • “turbine efficiency” • “mad cow disease”

  8. Limiting • by year (e.g. only articles after 2000) • by language (e.g. English only) • by document type (eg review, report) • by descriptor where available • ti = title • au = author • ab = abstract etc

  9. Wildcards or truncation • usually * but sometimes ? or ! or other symbol • abbreviation • specifies part of a word • educ* • advert* • organi*ation • wom*n • cat* or felin* …… but what’s wrong here?

  10. Answer: • cat* will find • cat, cats • cattle, catch, cathedral, category, catastrophe, catastrophic, cataclysmic, catalogue, catfish…. • and all other words starting with cat…. • …not what is needed in this case!

  11. Brackets (parentheses) • order of searching by the search engine: • (brackets) • not • and • or • water and pollution not river • river and (otter or stoat)

  12. Boolean operators • named after George Boole, English mathematician 1815-64 • Boolean operators are basically just…. • AND / OR / NOT …….!

  13. Boolean operators: OR • OR - broadens, gives most results • if you don’t mind either term e.g. solar or sun, or both together solar sun solar and sun

  14. Boolean operators: AND • AND – if you must have both terms - narrows, reduces the number • e.g. results for only “solar and energy” together solar energy solar + energy

  15. Boolean operators: NOT • NOT – removes terms e.g. solar energy results, but without any references to heating heating solar energy solar energy + heating

  16. If you don’t get enough results expand the topic – use more, or different, terms e.g: topic: why do foster parents stop fostering? List of key words for searching:(remember the pre-search analysis?) child care foster care disruption adoption fostering breakdown caring failure disturbances placement foster parents cease child foster families fail selection child fostering problem approval care stop assessments issues interviews training visits retention Tip:find more keywords from previous search results

  17. If you get too many results • if you get too many hits, you need to • refine your search • narrow it down by setting Limits (by year, language etc) • try different key words from the pre-search analysis list

  18. More examples... • (cats and dogs) • (cats or felines) • chick* or hen* or poultry or fowl* • “contact lens” • (schools and colleges) not (nurseries or kindergartens) • Liverpool and “football club” not Everton

  19. General tips... • always check the Help facility • be prepared to do many searches using different keywords • use keywords from your previous search results • the more operators and limits you use, the more relevant your results will be

  20. Electronic resources • databases and indexes to journal articles via the Internet • all different - in layout, terms of use, passwords, and searching techniques • look in the Help facility

  21. Useful facilities in databases advanced search browse journals keyword search Google images marked results email results subject search narrow by subdivision help facility stop words, wildcards refereed publications alerting services personal profile shopping basket

  22. Evaluating your results What do you think of your search results????? Are they…What about… …relevant? …authority? …accurate? …coverage? …current? …content? …good quality? …sources?

  23. Useful books in the library • searching the Internet • online searching • search engine guides • study skills section

  24. Finally….. • Please ask the library staff if you need help • Happy searching!

  25. Thank you ! Learning Resource Centre Information Services

More Related