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:For embedding techniques, we take TransE [Bordes et al., 2013], KALE [Guo et al., 2016], TEKE [Wang and Li, 2016] and HOLE [Nickel et al., 2016] as our comparisons.
Category: