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   [$node as node()]
) as xs:float


Returns the confidence of a node, or of the context node if no node is provided.

node A node. Typically this is an item in the result sequence of a cts:search operation.

Usage Notes

Confidence is similar to score, except that it is bounded. It is similar to fitness, except that it is influenced by term IDFs. It is an xs:float in the range of 0.0 to 1.0. It does not include quality.

When using with any of the scoring methods, the confidence is calculated by first bounding the score in the range of 0.0 to 1.0, then taking the square root of that number.


let $x := cts:search(collection(), "dog")

 => Returns the confidence value for the first item
    in the search.

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