Concept Operators


Concept operators combine the meaning of search elements to identify a concept in a document. Documents retrieved using concept operators are relevance ranked. The following table briefly describes each concept operator; see "Operators for Searching Full Text" in Chapter 3 for examples and more detailed descriptions.

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Operator Name
Description
ACCRUE
Selects documents that include at least one of the search elements you specify. The more search elements that are present, the higher the score will be.
ALL
Selects documents that contain all of the search elements you specify. A score of 1.00 is assigned to each retrieved document. <ALL> and <AND> are similar and they retrieve the same results. Queries using <ALL> are not relevance-ranked; all retrieval results are assigned a score of 1.00.
AND
Selects documents that contain all of the search elements you specify. An score is calculated for each retrieved document. <AND> and <ALL> are similar and they retrieve the same results. Queries using <AND> are relevance-ranked; retrieved documents are assigned a score between 0 and 1.00.
ANY
Selects documents that contain at least one of the search elements you specify. A score of 1.00 is assigned to each retrieved document. <ANY> and <OR> are similar and they retrieve the same results. Queries using <ANY> are not relevance-ranked; all retrieval results are assigned a score of 1.00.
OR
Selects documents that contain at least one of the search elements you specify. A score is calculated for each retrieved document. <OR> and <ANY> are similar and they retrieve the same results. Queries using <OR> are relevance-ranked; retrieval documents are assigned a score between 0 and 1.00.




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