Research Article
BTP: A Bedtime Predicting Algorithm via Smartphone Screen Status
| Sequence | Coding Pattern | 1/Event Code | 0/Event Code |
| Screen Status | Screen light up/SON | Screen Extinguish/SOFF |
| Home Status | Arriving home/AH | Leave home/LH |
| Interruption Status | Incoming call/IC | No interruption event | Receiving message/RM | App notifications/AN |
| Alarm clock Status | Alarm clock ring/ACR | No ringing event |
| Power Status | Power on/PON | Power off/POFF |
| Motion Status | Accelerometer activated/AA | No activated |
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