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:‚Ä¶automatically generates layout information encoding node and reaction centroid coordinates using the FruchtermanReingold (FR) algorithm, which has been shown to be robust in the face of variegated graph topologies and faithfully reproduces the underlying symmetry [Fruchterman and Reingold, 1991].
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