Inside internet search engines products
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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

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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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