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R_ATMOST

Name

R_ATMOST

Synopsis

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

Arguments

Maximum 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 below the maximum weight are included in the ranking calculation.

Comments

R_ATMOST requires that any returned term or subquery have a weight in the record below the specified weight.

Example

R_ATMOST( 0.7, 'blue', 'green', 'red' );

See Also

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