Efficient automated determination of the number of components in an area withoverlapping peaks using the BIC
(λ) termination criterion. The mean squared error MSE (scaled, dotted) decreases monotonically over the LARS steps and the generalized degrees of freedom GDF(λ) (dashed) increase monotonically. The resulting BIC(λ) measure(solid) exhibits a minimum BIC(λ
) in the 9th LARS step and λ
is accepted as a minimizer because thelower bound BIC
) exceeds BIC(λ
) in the 10th LARS step.