محركات البحث

Download محركات البحث

Post on 19-Jul-2015

101 views

Category:

Software

9 download

Embed Size (px)

TRANSCRIPT

PowerPoint Presentation

1955 Wandex. WebCrawler 1994. . . Excite .infoseek Inktomi Google 1998 .:

(search engine) ( FTP) (Telnet) :

.(spiderprogram) .indexerprogram)) .:

.

.

.

Google Yahoo . . . ...

:3. 2- 1- 1. (spider) (crawler) (title) (keywords) (Meta tags) .

1. (links) . .

2. (index program) (catalogue) (database) (spider) (ranking algorithms).

3. (search engine program) (keyword) (search box) (index database) .(browser window)

3. : LycosAltaVista ExciteNetscape . : : 1- Foreign Search Engines :

. Altavista Excite Googel

: 2- Specialaized Search Engines :

.

: 3- Intelligent Agents :

: 1- News Rover :

. : 3- Intelligent Agents :

: 3- Intelligent Agents : 2- Infomagnet :

.

Infogate :

, .

: 3- Intelligent Agents :3- (AltaVista):

(keywords) (Usenet newsgroups) . (case sensitive) (ranks) (keywords).

: 3- Intelligent Agents :4- (Excite):

(Boolean operations) (AOL) .

: 3- Intelligent Agents :5- (Hotbot) :

(Newsgroups) MP3.

: 3- Intelligent Agents :6- (Infoseek) :

(Go Network) (Netscape) (Boolean searching).

: 3- Intelligent Agents :7- (Lycos) :

(keywords) . (web) (Gopher) (FTP). .

: (: Google).

(: Yahoo!).

(: AltaVista).

(: Msn).

(: Bing).

(: LiveSearch).

(: DuckDuckGo)

:-1- : .2- : "" 2006 . "" .3- Altavista : .4- Google: .5- YAHOO : .6- : .7- MSN : .8- Excite : .

: . .

: . . . . . . "" . : . "" .

: . . . . .

:32 1- :

. . . . . . 2- : : . . . LexiGuide LexiQuest Oingo Simpli.com.

35 3- . "" . . . 4- . . . "" " " " " "" . 5- : " " ( ) " " . " " " ". . . Ebay . Ebay Fast Search & Transfer .

40 80% . . .

41 Exalead ( Exalead) : , , . 2. Primus . .

42 AskJeeves

AskJeeves.com " " ( ) . .

4. Autonomy Autonomy.com . . . 44 :: search engine .: , robot = spider . .

: , , , . (keywords) (phrase). (operators) .. : Google Lycos AltaVista* : . * : ( ) ( ).* : . * :

:: Search directories .: (Web directory) (catalogue or guide) . ( ) .

: : ) . . : yahoo Ayna Maktoob* : . * : .* : (hyperlink). * : .