METHOD FOR DETERMINING AT A CURRENT TIME POINT A PRESERVATION STATE OF ONE PRODUCT AND COMPUTER SYSTEM FOR CARRYING OUT SAID METHOD

The method includes: providing a computer system in which are stored phenomenological models of evolution of a quantitative attribute value, each model having between three and nine parameters, including an initial quantitative attribute value parameter, said computer system including an equation resolution tool for computing an experimental stability data set for finding for each said model best fitting values for its parameters, an estimator production tool for finding for each model estimators including a physico-chemical parameter likelihood estimator and a fit distance, respectively based on a comparison between initial quantitative attribute values in the experimental data set and the best fitting value found for said model for the initial quantitative attribute value parameter, and on a comparison between the values in the experimental data set and the corresponding values given by said model; selecting as law of evolution of the quantitative attribute value a best model amongst said models based on the found estimators; determining said preservation state using the law of evolution.