Challenges and limits in personalized dietary logging and analysis

Abstract

The paper gives an overview of the challenges of dietary logging applications based on food composition and recipe databases. The MenuGene dietary expert system is briefly introduced with its web-based and mobile user interfaces Dietlog and Lavinia. The focus is the reliability and accuracy of nutrient content estimations based on user logs. The paper presents the results of two small-scale studies that measured the real accuracy of logging, one with healthy users in everyday life, and another in a clinical setting. The results showed that an overall content estimate accuracy of ca. 15% was attainable.