Types of Searches
Search Engines: Google, Ask.com, Gigablast, Wisenut.com, Hotbot,…
Subject Directories: Looksmart, Informine, About.com,…
Meta Searches: Dogpile, Metacrawler, Webcrawler, Ixquick, Vivisimo, Guidebeam,…
Searchable Databases – many not accessible from the WWW (Examples: http://www.cyndislist.com/database.htm and http://univ.cc/ ), Factiva, GMID, Hoover’s Online, …
Search Engines: Extremely specific searches with Keyword.
Very large databases – possibly irrelevant results.
Best for very targeted or obscure topics, multi-concept queries and searches for specific people, sites, etc.
No evaluation criteria – quality?
Subject Directories: good for broader searches or topic-based research.
Smaller databases => fewer results often more relevant.
Some have selection criteria for choosing sites to include.
Some provide quality ratings for sites.
Good for browsing through resources on a particular topic.
If you have a research project, or need to explore an idea, event, subject area, proposition, phenomenon, etc., directories are a good place to begin.
Much more structured and controlled.
Can often be found over the WWW but requires members to log on.
they are usually not reached by either search engines or search directories.
More to come later on.
Search Techniques: Complex/Advanced Features
ALL OF THE WORDS: when all the words must be there to describe your query e.g. sharks, attacks, Bondi.
EXACT PHRASE: when a specific phrase is required, e.g. Bondi Beach Hotel. Especially useful for names of people, e.g. John Howard.
AT LEAST ONE OF THE WORDS: when you may be interested to find out about a range of things, e.g. sharks, stingrays, jellyfish, or when several different words may describe the same (or very similar) idea, e.g. attacks, fatalities, accidents.
WITHOUT THE WORDS: when you specifically wish to exclude a word or words which would change the context of your query, e.g. cronulla (exclude references to the Cronulla Sharks Rugby League club from your search on sharks).