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Heatmaps demonstrating the average codeword assignment for accelerometer and gyroscope data of pocket-case and hand-case, on a codebook of size 32 broken down by activity. The upper row for each case shows the unnormalized assignment averages, while the respective second lines were normalized per codeword (per column, across all activities). This allows to see tendential differences between activity-specific assignments, without losing sight of the real significance of differences.
