The invention discloses a personal
obesity risk
prediction system and method based on AI of
big data, and belongs to the field of
medical health, and the
system comprises a data collection module, a multi-dimensional feature construction module, a risk
label dynamic generation module, a model training and risk prediction module, a credibility evaluation and calibration module and the like. The
system collects multi-source heterogeneous data through wearable equipment, a biochemical interface and a health platform API (Application Program Interface), uniformly encodes the multi-source heterogeneous data into a
standard time sequence and then constructs behavior-
metabolism-environment
coupling characteristics. And performing joint modeling on the dynamic features and the labels by adopting a graph neural network in combination with causal factorization, and outputting an individual
obesity risk prediction result. The result credibility is improved through Monte Carlo Dropout and a
confidence interval calibration mechanism, and calibration information is fed back to a feature construction link to optimize a modeling strategy. Finally, the key risk factors are presented in the form of a visual thermodynamic diagram and a causal
path diagram, and an individualized intervention suggestion vector is generated. The method has the beneficial effects of improving prediction accuracy and enhancing individual intervention pertinence.