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R_NEAR

Name

R_NEAR

Synopsis

Returns records where the listed terms or subqueries are within a specified number of words.

Arguments

Maximum distance between the words
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.

Comments

NEAR returns the hits (location) for each term or subquery that are within the specified number of words of each other.

Note that while we say, "within n words," what counts as a word is specified by the indexing process. Each call to prIndexWord increments the word count.

Example

R_NEAR( 3 'blue', 'green' );

See Also

near, r_near, p_near, v_near, ordered_near, r_ordered_near, p_ordered_near, v_ordered_near