chasmbetween aspiration and reality may need to be bridged by large community efforts rather than traditional
in-houseefforts.
tuning). Tuning uses degrees of freedom allowed by uncertainties in model approximations to modify parameters to make the simulation better align with some selected observed target(s). We describe how these tuning targets, parameters, and philosophy vary across six US modeling centers in order to increase the transparency of the practice.
fitness for useconcept it provides users with the knowledge needed to make informed decisions about appropriate data use in relation to the target application.