Before revision:  These functions take different forms based on modeling assumptions with respect to the available data and relevant system parameters. The goal of this research is to analyze the effects of observation function selection in the EnKF in the settingof epidemic modeling, where a variety of observation functions are used in the literature.
After revision:  Key differences in observed data and modeling assumptions have led to the use of different observation functions in the epidemic modeling literature. In this work, we present a novel computational analysis demonstrating the effects of observation function selection in the EnKF in the settingof epidemic modeling, where a variety of observation functions are used in the literature.