Search Systems

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9/29/2003

• Search Systems
• An Alternative to Navigation
• RM Chapter 8

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Business

• Inside Web Development October 2003
• Questions about the assignment

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My Favorite Web SitesTheodore L. Parrish

• www.CBSMarketWatch.com
• www.CNNMoney.com
• www.LMTT.com
• www.dismal.com
• www.bankrate.com
• www.bls.gov
• Finance.yahoo.com does not link
• www.henssler.com

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• Audience specific searching
• Library of Michigan
• Indexing by Subject
• Hierarchical search zones Yahoo SciFi
  Movies
• Indexing recent content
• Chronological in NYT
• assumes you know or are willing to cast a wide
  net

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Selecting Content Components to Search

• The home page of Salon.com doesnt do much for
  me
• Any of you use it?

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Search Algorithms

• Pattern Matching
• recall and precision
• recall relevant recd./ docs
• precision relevant recd./ relevant docs
• Do your users want high recall or high precision?
  Are their wants static or dynamic?

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Document Similarity

• It is I assume what google does when you click
  on Similar pages\
• cited by
• active bibliography citing
• users also viewed
• text similarity
• co-citation

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Query Builders

• spell checkers
• phonetic tools
• stemming tools
• natural language tools
• controlled vocabulary and thesauri

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Presenting Results

• What to display
• url title opening lines lines containing term
  relevance measure date size
• How many
• per page overall
• Order of display
• perhaps with sort options alpha, date,
  relevance, popularity, ratings, payola

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• Grouping
• if at all
• Exporting
• print, email, selecting subsets, saving a search

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NextSearch Interface