In Reference to the recent `Weather Normalization Question' discussion line which evolved into a discussion of calibration, and to many years of discussions of calibrated modeling, I think perhaps we are lacking a definition(s) of what a `calibrated' model is. There are many out there but there are no standard definitions that I've ever seen, beyond `matching utility bills within x %' that appears in some DSM program guidelines. I believe this must be done in the context of `What are we going to use the model for?" I've seen the term used in reference to everything from aggregated load research work to the building on the corner that is considering a HVAC upgrade, from the Texas A&M shoot-out predictive statistical routines to detailed end-use monitoring and M&V approaches. Often it is used to as a surrogate for `expensive' or for `high quality'. Questions that should be answered in a definition: Calibrated to what standard measure? And why that particular standard? The entire model or just pieces? How closely does it have to match the defined standard? Possibly including various statistical measures. Mark E. Case, President etc Group, Inc. 3481 South 2300 East Salt Lake City, UT 84109 801-278-1927, 801-278-1942(F) ====================================================== You received this e-mail because you are subscribed to the BLDG-SIM@xxxxxxxx mailing list. To unsubscribe from this mailing list send a blank message to BLDG-SIM-UNSUBSCRIBE@xxxxxxxx
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