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Santa Rosa District SchoolsProfessional Development Center
Budgie Latshaw
Search Engines
An Internet search tool that searches sites for key wordsSearch their own database of informationDeploys robots or spiders to find incidences of key words to add to its database
What do the results mean?Results are presented in order of relevance
Relevancy rankings based on a formula
Different methods of collection
How do I formulate my search?
Identify important concepts within the question
Identify keywords and related synonyms
Read the HELP!
Boolean SearchesUsing terms to broaden or narrow your search
Uses AND, OR, NOT
Or +, -
Boolean ExamplesEndangered AND species AND mammals NOT bears
endangered speciesmammals
AND
NOT
Boolean ExamplesIf you were looking for non-surgical treatments for glaucoma…
glaucoma +treatment -surgical
Does the engine support:
Quotation marks?
Capital letters?
Wildcards, truncations or word stem?
Search EnginesGoogle: www.google.comWisenut: www.wisenut.comHotBot: www.hotbot.comTeoma: teoma.comAll the Web: www.alltheweb.com
Search DirectoriesOrganized by subject
User works down a series of menus
Organized by HUMANS
Smaller database than engines
Search DirectoriesYahoo!: www.yahoo.comInfomine: infomine.ucr.edu The Open Directory: dmoz.orgAbout.com: about.comLibrarians” Index to the Internet: lii.orgNational Directory: www.nationaldirectory.com
Which is better -- an engine or a directory?
Personal preference
Directories allow the user to form the search, but may not use common terms
Search engines allow the user to use common language, but may lead to lots of hits
Build a Better QueryUse the advanced search feature
Use many words, not just a few
Search for your target words, and synonyms
Search for phrases in quotation
Read the search engine’s help files
Did I say?Read the HELP!
Meta Search ToolsSearch tool that uses other engines’ databases
“Skims the surface” of multiple databases
Typically used after other engines have failed
Meta Search Tools
Meta Search Tools
Dogpile www.dogpile.com
Vivisimo vivisimo.com
MetaCrawler www.metacrawler.com
Specialized Search ToolsNews Engines
Library-based Search Tools
Choose the Best Search Engine for Your Purpose
Noodle Tools: Debbie Abilock
http://www.noodletools.com/debbie/literacies/information/5locate/adviceengine.html
Search well!