Fig. 2From: Genome instability model of metastatic neuroblastoma tumorigenesis by a dictionary learning algorithmA piecewise constant signal as weighted linear combination of atoms. The piecewise constant signal at the bottom of the figure can be obtained by linearly combining a set of three elementary alterations (atoms). Each atom is multiplied by a weighting factor (coefficient) β and then added up to obtain the final signalBack to article page