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Searching Information. General Steps Identifying Key Words, Synonyms, and Key Phrases Constructing an effective search statement Advance search/boolean.

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Presentation on theme: "Searching Information. General Steps Identifying Key Words, Synonyms, and Key Phrases Constructing an effective search statement Advance search/boolean."— Presentation transcript:

1 Searching Information

2 General Steps Identifying Key Words, Synonyms, and Key Phrases Constructing an effective search statement Advance search/boolean operators –With all of the words (AND) –With the exact phase –With any of the words (OR) –Without the words (NOT)

3 Search Engine An Internet software program that creates huge databases of web documents Examples: Google, AltaVista GoogleAltaVista –No search engine indexes the entire web –Not all search engines are updated in a timely manner

4 Search Engines Definition (Internet) Search engines that are used for searching information from web pages / websites in the internet Search engine used within an organization/institute is called enterprise search engines e.g. Public LibrariesPublic Libraries

5 History Google (1998)Google –most popular –renowned by its simple interface and relevant search results –Keyword search Yahoo Search (2004)Yahoo Search MSN Search (2005)MSN Search Baidu (1999)Baidu –most popular in China

6 Principle: Web crawler (Web spider,Web robot) program or automated script which browses the World Wide Web in a methodical, automated manner. World Wide Web mainly used to create a copy of all the visited pages for later processing by a search engine The result – a listing of “ best match ” web pages that match the query keywords and are more relevant, popular or authoritative than others

7 Search Directory Internet directories begin with broad categories and become more specific as you descend in to the hierarchical list. Examples: Yahoo, Yahooligans, KidsClick.YahooYahooligansKidsClick

8 Metasearch Engine A search engine that searches multiple search engines simultaneously Examples: Dogpile, Ixquick, Vivisimo.DogpileIxquickVivisimo

9 Information Literacy Issue! spamdexing –Techniques employed by some Web marketers and site designers in order to fool a search engine's spider and indexing programs. The objective is to ensure that their Web site always appears at or near the top of the list of search engine results. Source: http://www.answers.com/topic/spamdexing


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