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Personal sleep pattern visualization using sequence-based kernel self-organizing map on sound data
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DOI：10.1016/j.artmed.2017.06.012.png)
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Abstract
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We propose a method to discover sleep patterns via clustering of sound events recorded during sleep. The proposed method extends the conventional self-organizing map algorithm by kernelization and sequence-based technologies to obtain a fine-grained map that visualizes the distribution and changes of sleep-related events. We introduced features widely applied in sound processing and popular kernel functions to the proposed method to evaluate and compare performance. The proposed method provides a new aspect of sleep monitoring because the results demonstrate that sound events can be directly correlated to an individual's sleep patterns. In addition, by visualizing the transition of cluster dynamics, sleep-related sound events were found to relate to the various stages of sleep. Therefore, these results empirically warrant future study into the assessment of personal sleep quality using sound data. (C) 2017 Elsevier B.V. All rights reserved.
Keywords:
Sleep pattern
Sound data
Self-organizing map
Pairwise F-measure
Polysomnography
Sleep stage
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