A computer implemented method of predicting a phase stability parameter for a polymer material comprising the steps of providing to a computer processor via a communication interface a digital representation of the polymer material; providing to the processor via the communication interface a data driven model parametrized on a digital representation of historical polymer material, and historical phase stability parameters; determining with the computer processor a phase stability parameter for the polymer material based on the provided data driven model, and the digital representation of the polymer material; providing via the communication interface the determined phase stability parameter.