MACROMEDIA COLDFUSION 4.5-DEVELOPING WEB, Develop Manual

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172 Developing Web Applications with ColdFusion
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Natural language operators — Allow the use of natural language expressions in
forming queries.
Ordinarily, you use operators in explicit searches. They are used in the following
manner:
"<operator>search_string"
Evidence operators
Evidence operators can be used to specify either a basic word search or an intelligent
word search. A basic word search finds documents that contain only the word or words
specified in the query. An intelligent word search expands the query terms to create an
expanded word list so that the search returns documents that contain variations of the
query terms.
Documents retrieved using evidence operators are not ranked by relevance unless you
use the MANY modifier.
Proximity operators
Proximity operators specify the relative location of specific words in the document.
Specified words must be in the same phrase, paragraph, or sentence for a document to
be retrieved. In the case of NEAR and NEAR/N operators, retrieved documents are
ranked by relevance based on the proximity of the specified words. Proximity operators
can be nested; phrases or words can appear within SENTENCE or PARAGRAPH
operators, and SENTENCE operators can appear within PARAGRAPH operators.
Verity Evidence Operators
Operator Description
STEM Expands the search to include the word you enter and its
variations. The STEM operator is automatically implied in any
SIMPLE query. For example, the EXPLICIT query expression
<STEM>believe
yields matches such as, "believe," "believing," "believer".’
WILDCARD Matches wildcard characters included in search strings. Certain
characters automatically indicate a wildcard specification, such as *
and?. For example, the query expression
spam*
yields matches such as, "spam," "spammer," "spamming."
WORD Performs a basic word search, selecting documents that include
one or more instances of the specific word you enter. The WORD
operator is automatically implied in any SIMPLE query.