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. Author manuscript; available in PMC: 2022 Jul 8.
Published in final edited form as: ACM Trans Comput Healthc. 2022 Apr 7;3(3):33. doi: 10.1145/3508020

Figure 2:

Figure 2:

Activity labeling. A feature vector is extracted from five seconds of sensor data. A random forest maps the feature vector onto one of the activity choices, based on training data provided in real time by smartwatch users.