Each of these decoders is typically (although not always) used in tandem with a specific sampling selection at training.
closest-First for instance is used in combination with a sample selection that generates training instances only for the mentions that occur between the closest antecedent and the anaphor (Soon et al., 2001  We evaluated the system on the English part of the corpus provided in the coNLL-2012 Shared Task (Pradhan et al., 2012), referred to as coNLL-2012 here.