For example, in 3Peter Lin's approach would yield ↑subj :like for Peter and ↑dobj :like for ice-cream, while Padó and Lapata's approach would yield the contexts like (with a weight of 1.0) and ice-cream (with a weight of 0.5) for Peter.
padó and Lapata's measure is more robust against data sparseness but also finds related non-similar terms (which are ultimately unwanted for coreference resolution).