function decode = som_decode(sD, sM, svm_validation_data,svm_validation_label)
% the number of hits in each map-unit.

sValD = som_data_struct(svm_validation_data,'label',num2str(svm_validation_label));
h   = som_hits(sM,sValD);
bmu = som_bmus(sM, sValD, 'best');