Fig. 3.
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Heatmap of the persistence diagram in Fig. 2 with a scaling parameter of t = 0.2 (for the computation of the Heatmaps, all features are taken into account, not just every 500th as in Fig. 2). The red points correspond to the evaluation points that were chosen by the χ2-maximiser outlined in Sect. 3.3. The extracted data vector can be seen in Fig. 4.
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