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Web Searching

Web Searching. Everything, now. History of Search. Archie (archives) - 1990 Database of FTP filenames with regex query searching WWW Wanderer Web’s first robot High bandwidth load ALIWEB (Archie-Like Indexing of the WEB) Pages submitted with descriptions. History of Search.

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Web Searching

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  1. Web Searching Everything, now.

  2. History of Search • Archie (archives) - 1990 • Database of FTP filenames with regex query searching • WWW Wanderer • Web’s first robot • High bandwidth load • ALIWEB (Archie-Like Indexing of the WEB) • Pages submitted with descriptions

  3. History of Search • Archietext - 1993 • First to use statistical analysis of word relationships to generate results • Yahoo! - 1994 • Searchable directory of pages with descriptions • Webcrawler - 1994 † • Indexed entire web pages • Lycos - 1994 † • 60 million documents by 1996

  4. History of Search • Infoseek - 1994 † • Altavista - 1995 † • Looksmart -1996 • Inktomi - 1996 • Ask Jeeves -1997 • Google -1998 • Teoma - 2000

  5. Web Search Today • Search algorithms are highly secret • Use off-page criteria for ranking • Constant tweaking • Things to look for: • Boolean nesting • Fields • Clustering? • Stop words

  6. Web Search Today • Google • PageRank system • “Important” sites given artificial high rank • Strengths • Largest database • Relevance based on external linkage • Weaknesses • No nesting • May search for synonyms / grammatical variants (automatic stemming)

  7. Web Search Today • Yahoo! • Brand new search database (as of Feb ’04) • Strengths • Full boolean searching • Very fresh • Directory links • Weaknesses • Includes pay for inclusion results (!)

  8. Web Search Today • MSN Search (Inktomi) • Large Inktomi database • Strengths • Page depth limit • Full boolean searching

  9. Web Search Today • Teoma • Subject-specific popularity • Strengths • Refine • Related • Weaknesses • Small database • No boolean nesting

  10. Web Search Tomorrow • Kartoo • Visual meta search engine • Nutch • Open source web search • Java (but that could change) • Dipsie • “2 clicks” • Singingfish • Multimedia (audio / video) search

  11. Internet Directories

  12. Conclusion • Which search engine is the best?

  13. References • http://searchengineshowdown.com/ • http://www.search-marketing.info/

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