Denote this maximal number by M(e j ): M(e j ) = max k =1…7 |{x∈e j : x∈ĉ k ) }| .
the recall measure R is defined to be the sum of the above maximal overlap counts over all expert clusters, divided by all 131 expert terms (repetitions in distinct clusters counted): R = ∑ j=1…8 M(e j ) / 131.