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:We fit the LCJ, LCJc, and LCJsym to simulated data derived from each parameter configuration and LCJ decision rule, and to simulated data derived from one parameter configuration using the LCJc and LCJsym decision rules.
Category: