Search Engine

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Search Engine
?????????????????????????????
LAB.8
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????????? Search Engine

• Search Engine (Keyword Index)
• Search Directories (Subject Directories)
• Meta search Engines

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Search Engine (Keyword Index)
1. Search Engine ?????????????????????????????????
?????????????????????????????????? Spider ????
Robot ?????????????????????????????????
?????????????????????????????? ?
?????????????????? ???? www.altavista.com,
www.lycos.com ????????????????????????????????????
??????????????? ??????????????????????????????????
??????????????????????
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Search Directories
2. Web Directories ???????????????????????????????
??????????????????????????????????????????????????
??????????????????????????????????????????????????
???????????????????????? ?????????????????????????
??????????????????????????? ??????????????????????
?????????????? ???? www.yahoo.com
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Meta search Engines
3. Meta Search Engine ???? Search Engine
????????????????? ??????????????????????
????????????????????????????????????? Search
Engine ???????????????????????????????????????????
????? ????????????????????????????????????????????
??????????????????????????????????????? 100
3.
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???????????????????????????????

• www.google.com
• www.yahoo.com
• www.altavista.com
• www.lycos.com
• www.sanook.com
• www.hunsa.com

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?????????????????????

• ?????????????????????? (Search Operators) and ,or
  , not
• ????????????????????????????? ??? ??????????? ( )
  ??????????????
• ??? ??????????? (star) ???????????
• ?????????????? ???????????????????????????????
  ??????????
• ???????????? 1 ?? ????? ??????????????????????????
  ???????????????????

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????????????????????????
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??????...??????...

• www.metagopher.com
• www.askjeeves.com
• www.sanook.com
• www.looksmart.com
• www.google.com

-gt Meta Search Engine
-gt Search Engine
-gt Search Directories
-gt Search Directories
-gt Search Engine
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Assignment
1. ??????????????????????????????????????????????
2. ????????????????????????????????????????? 5
???????? (URL)3. ????????????????????????????????
?4. ??????????? ssupatta_at_wu.ac.th ????
ssukrat_at_hotmail.com5. ??????????????????? ...
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?????????????????????????????
????????????????????1. Internet 2. Domain Name
URL3. E-mail4. Search Engine