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R_ATLEAST

Name

R_ATLEAST

Synopsis

Returns records where any of the terms and subqueries that have at least a specified weight are present.

Arguments

Minimum required weight
List of terms and subqueries

Ranking Scheme

Ranks using the probabilistic method. The returned weight for hits in a record is the probability of all the terms with the specified weights in a given record being found together. That is calculated by multiplying the probability of those terms not occuring and taking the complement of this.

Note that only those terms in the record which have at least the required weight are included in the ranking calculation.

Comments

R_ATLEAST requires that any returned term or subquery have a weight in the record of at least the specified weight.

Example

R_ATLEAST( 0.6, 'blue', 'green', 'red' );

See Also

atleast, atmost, r_atleast, r_atmost, p_atleast, p_atmost, or, value, r_or, p_or, m_or