Plucene::Search::Similarity - the score of a query

The score of a query for a given document.

	my $norm = $sim->norm($num_term);

	my $byte_norm = $sim->byte_norm($byte);

Computes a score factor based on a term or phrase's frequency in a document.

Computes a score factor for a phrase.

Computes a score factor based on the fraction of all query terms that a document contains.