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Inside Internet Search Engines: Products. William Chang and Jan Pedersen. Web Oracle One, Two, Three... . Network of computers? Network of hypertext? Network of people? Internet...is a place where you can always find someone to help answer any question, or get anything done.

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inside internet search engines products

Inside Internet Search Engines:Products

William Chang

and

Jan Pedersen

Sigir’99

web oracle one two three
Web Oracle One, Two, Three...
  • Network of computers?
  • Network of hypertext?
  • Network of people?
  • Internet...is a place where you can always find someone to help answer any question, or get anything done.
  • Productize that!

Sigir’99

who s who and what s what
Who’s Who and What’s What?
  • Query logs
    • what do people look for, besides sex?
  • What are indexible terms unbounded?
    • Can you index all possible phrases?
    • Formatting cue helps
    • Syntax helps
    • Stemming helps
  • Precision vs recall
  • WordNet -> PhraseNet?

Sigir’99

who likes what
Who Likes What?
  • Too many hits!
    • the problem of indistinguishable scores
  • Spamming
    • the relevant and irrelevant
  • The web to the rescue
    • inside-out indexing

Sigir’99

citation index or popularity contest
Citation Index or Popularity Contest?
  • Counting hyperlinks
    • Avoiding double-counting
      • Site clustering; what’s a site?
      • Judging the source
  • Hyperlinks revisited
    • Anchor text context; Yanhong Li
    • Why is this result hard to duplicate?
  • Does adding more context help?

Sigir’99

who asks what
Who asks What?
  • Query logs revisited
  • Query-based indexing – why index things people don’t ask for?
  • If they ask for A, give them B
  • From atomic concepts to query extensions
  • Structure of questions and answers
    • Shyam Kapur’s chunks

Sigir’99

faqs and not so faqs
FAQs and not so FAQs
  • Usenet FAQs –Robin Burke’s FAQFinder
  • FAQ discovery
  • Where are the answers?

Sigir’99

indexing
Indexing
  • Different ways of crawling the web
  • Frequency of change
  • Frequency of request
  • Managing Terabytes or GigaURLs?
  • Real-time indexing

Sigir’99

searching
Searching
  • Multiway merge and scoring
  • Logical operations
  • Query parsing and phrase searching
  • Query refinement
  • Distributed searching and the perfect merge

Sigir’99

design issues
Design Issues
  • Managing complexity
  • Managing memory
  • Managing parallelism
  • Managing data turnover
  • Managing scalability

Sigir’99

futures
Futures
  • Vertical markets – healthcare, real estate, jobs and resumes, etc.
  • Localized search
  • Search as embedded app
  • Shopping \'bots
  • Open Problems
  • Has the bubble burst?

Sigir’99

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