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Boolean Searching (PowerPoint download)

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					Boolean Searching

   In 20 minutes or less
Searching electronic
databases
  Dynamic environment, constant
  development and change
  Each search engine is different – their
  algorithm is their industrial secret
  But Boolean searching is the basis
  Organizes concepts in sets
  Used by WWW search engines and
  database publishers
Boolean Logic

  George Boole in 1840s
  AND (retrieves any word in search,
  relationship to each other on page not
  important)
  OR (document contains at least one of the
  words searched)
  NOT, sometimes ANDNOT (excludes term)
  Boolean Machine
  no CAPS, no guarantee
Databases at GSO Library
a sampler of the DEEP web
   Databases will describe search logic, and add
   delimiters
   Databases host: Basic Search, Subject
   Search, Advanced Search = Boolean Search
       Reference: FOF, EBSCO, EB, WW
          Key words and events (clues for extended
           searching)
       Magazine, Journal, News: VOL, JSTOR
       Books: Destiny
Searching the SURFACE web
     Because it is ubiquitous
       AND is automatically assumed
       “specific phrase”
       (search first) Parenthesis force the order of search
        (cat OR feline) AND behavior
       Implied Boolean
          AND = +word
          NOT = -word
      Using Advanced Search template
      OR Google does not recognize OR unless in Advanced Search
       template
      Let’s search
      Experiment: add the word database to search; try Google
       MORE; try a deep web SE like LII or IA or Project Gutenberg
Summary

 Dynamic information technology
 environment
 Boolean Searching = AND, OR, NOT
 Databases
 Searching the WWW
 Two helpful links: Internet Tutorials and
 Bare Bones from USC

				
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posted:4/5/2011
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