MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual

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550 Chapter 25: Using Verity Search Expressions
The following example uses a proximity operator:
<cfsearch name = "quick_search"
collection="bbb"
type = "explicit"
criteria="red<near>socks">
For an example using the IN proximity operator to search XML documents , see “Zone searches”
on page 552 .
Score operators
Score operators control how the search engine calculates scores for retrieved documents. The
maximum score that a returned search element can have is 1.000. You can set the score to display
a maximum of four decimal places.
When you use a score operator, 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.
The document’s score is available as a result column. You can use the SCORE result column to
get the relevancy score of any document retrieved; for example:
<cfoutput>
<a href="#Search1.URL#">#Search1.Title#</a><br>
Document Score=#Search1.SCORE#<BR>
</cfoutput>
The following table describes the score operators:
Operator Description Example
YESNO Forces the score of an element to 1 if the
element’s score is nonzero. <YESNO>mainframe . If the retrieval
result of the search on mainframe is
0.75, the YESNO operator forces
the result to 1. You can use YESNO
to avoid relevance ranking.
PRODUCT Multiplies the scores for the search
elements in each document matching a
query. <PRODUCT>(computers, laptops)
takes the product of the resulting
scores.
SUM Adds the scores for the search element in
each document matching a query, up to a
maximum value of 1. <SUM>(computers, laptops) takes
the sum of the resulting scores.
COMPLEMENT Calculates scores for documents matching
a query by taking the complement
(subtracting from 1) of the scores for the
query’s search elements. The new score is 1
minus the search element’s original score. <COMPLEMENT>computers . If the
search element’s original score is
.785, the COMPLEMENT
operator recalculates the score as
.215.