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Minimum window size required for diverse performance thresholds. The threshold values are respectively calculated from the maximum F1 – score that could be achieved for the recognition of each activity (represented on top). The results for two particular recognition methodologies are shown: (a) DT-FS2; and (b) KNN-FS2. Non-colored spots (not defined, ND) correspond to performance values for which no window enhancement may be obtained.
