فایل رایگان پاورپوینت در مورد Internet Search Strategies

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نوع فایل : powerpoint (..ppt) ( قابل ویرایش و آماده پرینت )
تعداد اسلاید : 40 اسلاید

قسمتی از متن powerpoint (..ppt) :


1
Internet Search Strategies
© 2002 ATGCI
2
Queries and Operators
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Queries
Queries are the combination of words and operators that we enter into search box of search engines and directories to show it what is our intention from the search.
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The Operators and Syntax in Boolean Searching
AND: terms on BOTH sides of this operator must be present somewhere in the document in order to be scored as a result
OR: terms on EITHER side of this operator are sufficient to be scored as a result
AND NOT: documents containing the term AFTER this operator are rejected from the results set
NEAR: similar to AND, only both terms have to be within a specified word distance from one another in order to be scored as a result


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