42. The system of claim 41 , where, when formulating the search query refinement suggestion, the processor is further to: compute term vectors using terms in the issued search queries of the search query-search document associations and the assigned weights.
42. The system of claim 41 , where, when formulating the search query refinement suggestion, the processor is further to: compute term vectors using terms in the issued search queries of the search query-search document associations and the assigned weights. 43. The system of claim 42 , where, when formulating the search query refinement suggestion, the processor is further to: normalize the term vectors; and form the clusters based on distances of each of the normalized term vectors from a common origin.