Published on in Vol 8, No 9 (2020): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17818, first published
.
![Using Machine Learning and Smartphone and Smartwatch Data to Detect Emotional States and Transitions: Exploratory Study Using Machine Learning and Smartphone and Smartwatch Data to Detect Emotional States and Transitions: Exploratory Study](https://asset.jmir.pub/assets/60ad2dfe7341e7ed87f3f68e48b4e924.png 480w,https://asset.jmir.pub/assets/60ad2dfe7341e7ed87f3f68e48b4e924.png 960w,https://asset.jmir.pub/assets/60ad2dfe7341e7ed87f3f68e48b4e924.png 1920w,https://asset.jmir.pub/assets/60ad2dfe7341e7ed87f3f68e48b4e924.png 2500w)
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