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We demonstrate that through these events it is possible to estimate sleep quality and identify factors affecting it most. We evaluate our approach by conducting extensive experiments involved fifteen users across a 2-week period. Our experimental results show that our approach can track a richer set of sleep events, provide better decision support for evaluating sleep quality, and help to identify causes for sleep problems compared to prior work.<\/jats:p>","DOI":"10.1145\/3264908","type":"journal-article","created":{"date-parts":[[2018,9,19]],"date-time":"2018-09-19T11:58:41Z","timestamp":1537358321000},"page":"1-34","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":62,"title":["SleepGuard"],"prefix":"10.1145","volume":"2","author":[{"given":"Liqiong","family":"Chang","sequence":"first","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaqi","family":"Lu","sequence":"additional","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ju","family":"Wang","sequence":"additional","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaojiang","family":"Chen","sequence":"additional","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dingyi","family":"Fang","sequence":"additional","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhanyong","family":"Tang","sequence":"additional","affiliation":[{"name":"Northwest University, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Petteri","family":"Nurmi","sequence":"additional","affiliation":[{"name":"Lancaster University, United Kingdom, University of Helsinki, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheng","family":"Wang","sequence":"additional","affiliation":[{"name":"Lancaster University, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2018,9,18]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"2018. https:\/\/en.wikipedia.org\/wiki\/Respiratory_rate. 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