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:First, Table 7 compares of our optimized Chebyshev quadratic and cubic interpolators with an optimized bipartite table method (SBTM) [13], an optimized symmetric table additional method (STAM) [20], a Chebyshev method without any optimization and standard multipliers [18], multipartite table methods [14], a Chebyshev method with constant-correction truncated multipliers [26], an enhanced quadratic minimax method [25] and two linear approximation algorithms (DM97 [12] and Tak98 [24]).
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