1. A method for modeling engine operation comprising the steps of: 1. collecting a first plurality of sensory data; 2. partitioning a flight envelope into a plurality of sub-regions; 3. assigning said first plurality of sensory data into said plurality of sub-regions; 4. generating an empirical model of at least one of said plurality of sub-regions; 5. generating a statistical summary model for at least one of said plurality of sub-regions; 6. collecting an additional plurality of sensory data; 7. partitioning said second plurality of sensory data into said plurality of sub-regions; 8. generating a plurality of pseudo-data using said empirical model; and 9. concatenating said plurality of pseudo-data and said additional plurality of sensory data to generate an updated empirical model and an updated statistical summary model for at least one of said plurality of sub-regions.