Like the freq
module, the wfreq
(weighted frequency) module scores results based on the frequency of user query terms in the result.
Additionally, the wfreq
module weights the individual query term frequencies for each result by the information content (overall frequency in the complete data set) of each query term. Less frequent query terms (that is, terms that would result in fewer search results) are weighted more heavily than more frequently occurring terms.
Note: The wfreq
module ignores matches due to query expansion that is, it assigned the lowest possible priority to records included in the search results list because of such matches.