Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:This contrasts with methods for modeling burn probability which rely on parameterization of the burn duration based on historical fire data (e.g., Parisien et al. 2005; Parisien and Moritz 2009; Ager et al. 2007; Braun et al. 2010).
Category: