Wearable sensors 41 machine learning 9 human 8 Article 7 Decision trees 6 Humans 6 Inertial navigation systems 6 Walking 6 walking 6 wearable sensors 6 Inertial sensor 5 Machine learning 5 Monitoring 5 algorithm 5 mathematical model 5 Deep learning 4 Gait analysis 4 Heart 4 IMU 4 Machine-learning 4 Sensor networks 4 Wearable Electronic Devices 4 Wearable devices 4 electronic device 4 physical activity 4 signal noise ratio 4 Bluetooth low energy 3 Classification (of information) 3 Continuous monitoring 3 Diagnosis 3