get weighted within-sample edge-counts and between-sample edge-counts
weighted_R1R2(E, n1, wei)
the weighted within-sample edge-count for sample 1.
the weighted within-sample edge-count for sample 2.
the weighted between-sample edge-count.
an edge matrix representing a similarity graph. Each row represents an edge and records the indices of two ends of an edge in two columns. The indices of observations in sample 1 are from 1 to n1 and indices of observations in sample 2 are from 1+n1 to n1+n2.
number of observations in sample 1.
a vector of weights of each edge.