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:(GC) [23], Seeded Region Growing (SRG) [24], Random Walker (RW) [18], Distance Regularized Level Set (DRLSE) [25], and Laplacian Coordinates (LAP) [26].
Category: