Discovering Behavioral Predispositions in Data to Improve Human Activity Recognition

• URL: http://arxiv.org/abs/2207.08816v1
• Date: Mon, 18 Jul 2022 10:07:15 GMT
• Title: Discovering Behavioral Predispositions in Data to Improve Human Activity Recognition
• Authors: Maximilian Popko, Sebastian Bader, Stefan L\"udtke, Thomas Kirste
• Abstract summary: We propose to improve the recognition performance by making use of the observation that patients tend to show specific behaviors at certain times of the day or week. All time segments within a cluster then consist of similar behaviors and thus indicate a behavioral predisposition (BPD) Empirically, we demonstrate that when the BPD per time segment is known, activity recognition performance can be substantially improved.
• Score: 1.2961180148172198
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The automatic, sensor-based assessment of challenging behavior of persons with dementia is an important task to support the selection of interventions. However, predicting behaviors like apathy and agitation is challenging due to the large inter- and intra-patient variability. Goal of this paper is to improve the recognition performance by making use of the observation that patients tend to show specific behaviors at certain times of the day or week. We propose to identify such segments of similar behavior via clustering the distributions of annotations of the time segments. All time segments within a cluster then consist of similar behaviors and thus indicate a behavioral predisposition (BPD). We utilize BPDs by training a classifier for each BPD. Empirically, we demonstrate that when the BPD per time segment is known, activity recognition performance can be substantially improved.

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