Parallel computation for big clusters of the Wasserstein distances between cluster centroid and signals in the cluster
W1_cl_centr_BIG(X_cumsum, rowInd, colInd, C_cumsum, nbr_cluster)
is a Filebacked data cummulative sum matrix n x N
is a vector of the row indeces
is a vector of the column indeces
is a vector of the cummulative sum of the cluster centroid
is a number of clusters
A vector of the Wasserstein distances