Feature functions
Feature functions apply to sort expressions. Most are supported only in fine sort expressions. You can combine various syntaxes and statements to create powerful sorting features.
static_bm25: Measures static text relevance
1. Usage instructions
static_bm25()
2. Parameters:
None
3. Return value:
A float value in the range of [0, 1].
4. Scenarios:
Scenario 1: To specify a text score for rough sorting, add static_bm25() to the rough sort expression.
5. Notes:
You can use this function in rough sort expressions.
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