Mark Levene

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• Mark Levene
• Birkbeck University of London

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Search engines popularity
http//r-rwebdesign.com/blog/?p438
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CS comScore NR Nielsen Netratings CP
Compete HW Hitwise http//searchengineland.com/
search-market-share-2008-google-grew-yahoo-microso
ft-dropped-stabilized-16310
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Volume of searches in billions (US)
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http//finance.walla.co.il/?w/8437/1437410/521296
/5/_at__at_/media
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??? TIM ?-76 ??????????? ?????? ????? ????????
http//www.globes.co.il/news/docView.aspx?did1000
416571fid1605
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????? ??????

• ????? ??? ??????? ?????? ????? ????????, ??????
  ?????? ??????? ?????? ???? ?? ????? ??????
• User experience - The desired, expected, or
  actual experience of a user interacting with a
  product, especially as it relates to the design
  of the product's user interface.
  http//en.wiktionary.org/wiki/user_experience
• Search experience (Improve Your Search
  Experience - http//www.google.com/help/features.
  html )

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??????

• Personalization - tailoring a consumer product,
  electronic or written medium to a user based on
  personal details or characteristics they provide.
  
• Personalization implies that the changes are
  based on implicit data, such as items purchased
  or pages viewed. The term customization is used
  instead when the site only uses explicit data
  such as ratings or preferences. (Wikipedia)
• ?? ???? ???????? ????? customization ???? ??????
  ?????? ?????? personalization ???? ???????
  ??????. ??? ???? ??? ??????? ???????? ???????
  ??????

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• ?????? google.com ?????? ???? ?????? ?
  google.co.il

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???? ?????

• ??? ??????? ??????? ?? ??????? ???????? ?? ???
  ?????? ???????? ???????? ??????
• ?????
• Google.co.il
• Google.com
• Google.co.uk
• Live search (Israel)
• Live search (US)
• Live search (UK)

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??? ?

• ????? ??????? ????? ???
• ??????? ?????? ????? ?????? ?? google ? live
  search
• ??????? ????? ???????? ???? ????? (??? 20 ? 40
  ?????? ??? ??????)
• ???????? ?????? ????? ?? 10 ??????? ?????? ?????
  ????
• 9 ???????, 3 ??????? ??? ????
• 24 ???????

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????? ??????? facebook
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??? ?

• ???? ?? ?????? ?? ????? ???? ??? ??????. ??? ????
  ????? ??????
• ????? ???????? ?? google
• ????? ???????? ?? live search
• ???????? ?? ???? ????? ????? ???????
• ??? ?????? ????? ?? ?????? ???? ????? ??? ????
  ??? ?????? ???? ????? ????

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BMI
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  ?? ???? ??????? ?????? ???????)

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  ???????
• ????? ?? ????? ?????? ??? ?? ??? ???????? (top
  ten) ?? ????? ?????? ??????

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???? ??????

• ???? ?????? ??????? (OC)
• Footrule ????? ????? ?? ??????? ???????? ????
  ??????? ?????? ???????? ??????? (????? ?? ?? ??
  ????? ??? ?????? ???????). ????? ??? 0 ? 1 (0 ???
  ?????, 1 ????? ???)
• ???? X ? Y ??? ? URL-?? ??????? ???????? ????
  ???????
• ?????? A ?????? ?? X ??? 1 ??????? ?? Y ??? 2
• ?????? B ?????? ?? X ??? 9 ??????? ?? Y ??? 10
• ?????? C ?????? ?? X ??? 1 ??????? ?? Y ??? 2
• ?????? D ?????? ?? X ??? 10 ??????? ?? Y ??? 9

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???? ????? - ????

• ??? M, ????? ?? ??? ????? ?"? Fagin et al.
• ?? URL ?????? ?????? ??? ???? ?????? ?? ?????
  ????????? 11 (??? ????? 10 URL-??).
• ?? ????? ?????? ??? ???? ??????? ???????? ???????

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Number of times the user created ranked list was
most similar to the ranked list retrieved by the
specific search interface
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Number of times users chose the specific search
engines results as the best ranked list