Resumen de Combining data-driven and domain knowledge components in an intelligent assistant to build personalized menus
Miquel Sànchez i Marrè 
, Karina Gibert Oliveras , Beatriz Sevilla Villanueva
In this paper, some new components that have been integratedin the Diet4You system for the generation of nutritional plansare introduced. Negative user preferences have been modelled and introduced in the system. Furthermore, the cultural eating styles originated from the location where the user lives have been taken into account dividing the original menu plan in sub-plans. Each sub-plan is in charge to optimize one of the meals of one day in the personal menu of the user. The main latent reasoning mechanism used is case-based reasoning, which reuses previous menu configurations according to the nutritional plan and the corresponding hard constraints and the user preferences tomeet a personalized recommendation menu for a given user. It uses the cognitive analogical reasoning technique in addition to ontologies, nutritional databases and expert knowledge. The preliminary results with some examples of application to test the new contextual components have been very satisfactory according to the evaluation of the experts
