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:Then we make quantitative comparisons with other state-of-the-art approaches on the 5-class and 6-class collective datasets, including RSTV approach in [7], a joint tracking and recognition flow model in [15], a complex hierarchical model in [5], a bayesian BORD method in [1] and a discriminative latent model in [17].
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