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Confusion matrices of gender classification computed with 10-fold cross-validation. Each column presents sensor position (left to right): left ankle, lower back, chest and right wrist. Each row presents feature sets used for classification (top to bottom): 3D accelerations (26 features), 3D angular velocities (26 features) and 6D accelerations and angular velocities (50 features). Classes: = gender female; = gender male.
