MACROMEDIA COLDFUSION 4.5-DEVELOPING WEB, Develop Manual

Page: 203 / 380

Chapter 11: Indexing and Searching Data 177
</CFOUTPUT>
<CFOUTPUT QUERY="GetText_Search">
#GetText_Search.TITLE# <BR>
</CFOUTPUT>
Concept operators
Concept operators combine the meaning of search elements to identify a concept in a
document. Documents retrieved using concept operators are ranked by relevance. The
following table describes each concept operator.
Score operators
Score operators govern how the search engine calculates scores for retrieved
documents. The maximum score a returned search element can have is 1.000. The
score percentage display can optionally be set to as many as four decimal places.
When a score operator is used, the search engine first calculates a separate score for
each search element found in a document, and then performs a mathematical
operation on the individual element scores to arrive at the final score for each
document.
Note that the document’s score is available as a result column. The SCORE result
column can be referenced to trap the relevancy score of any document retrieved. For
example:
<CFOUTPUT>
<A HREF="#Search1.URL#">#Search1.Title#</A><BR>
Document Score=#Search1.SCORE#<BR>
</CFOUTPUT>
Verity Concept Operators
Operator Description
AND Selects documents that contain all of the search elements you
specify.
OR Selects documents that show evidence of at least one of the
search elements you specify.
ACCRUE Selects documents that include at least one of the search elements
you specify. Documents are ranked based on the number of search
elements found.