Embodiments relate to a method and computer program product for generating a composite simulated model. A method includes receiving a specification request for generating a set of target time-series data from a set of source time-series data and obtaining specification information relating to the set of source time-series data, obtaining specification information relating to the set of target time-series data, and obtaining the source time-series data. The method also includes comparing the source and target specification information to determine if the set of source time-series data are time-aligned with the set of target time-series data and converting the set of source time-series data to the set of target time-series data upon determination that time alignment is needed.