This invention relates to a multi-
task learning-based integrated nutritional decision-making method and
system for examination, diagnosis, treatment, and evaluation, belonging to the interdisciplinary field of clinical
medicine and
artificial intelligence. This method aims to address the problems of isolated tasks, limited data utilization, and lack of quantitative recommendation and
prognostic prediction capabilities in existing nutritional decision-making technologies. The technical solution involves constructing a serial multi-
task learning neural
network model, sequentially including a
feature extraction module, a nutritional diagnosis module, a nutritional treatment recommendation module, and a prognostic and
efficacy evaluation module. A joint
loss function that dynamically balances the weights of each task and reuses prognostic labels is designed for training. This invention achieves integrated decision-making throughout the entire process of examination, diagnosis, treatment, and prognosis. It can integrate
multimodal data to achieve accurate
feature extraction, provide personalized quantitative nutritional recommendations, and prospectively predict
efficacy to guide clinical intervention, significantly improving the efficiency and accuracy of nutritional decision-making.