Context-aware personal diet suggestion system

Keeping a healthy and balanced diet has long been a critical issue for a person wanting to stay fit and energetic in her/his daily life. We can always turn to a dietitian (or a nutritionist) for professional diet suggestions if necessary. However, we cannot have a dietitian staying with us all the time, which renders daily nutrition control very challenging. Therefore, it is desirable for each individual to receive handy and informative diet suggestions whenever necessary. In this work, we propose a Context-aware Personal Diet Suggestion System (CPDSS) which tries to maximize an aggregated health utility function and provides useful diet suggestions according to some contextual information. In order to increase the practicality of the pro- posed system, we have integrated the CPDSS with an everyday appliance-a smart refrigerator-so that we can readily access the suggestions about one's diet, receive instant context-aware reminders while preparing foods, and keep long-term diet history to extract more useful pat- terns to caregivers to provide suggestions for health improvement.