A method and system to receive a dataset for a new design; receive datasets for a plurality of different legacy systems; determine a legacy model for each of the plurality of different legacy systems based on the respective dataset for each of the plurality of different legacy systems and the dataset for the new design; calculate a model weight to associate with each of the determined legacy models; determine, based on a combination of the determined legacy models for the plurality of different legacy systems and the weight associated therewith, a multi-source model for new data for the new design; and save a record of the determined multi-source model.