As we can see, the rule-based approach achieves accuracies of 66.0% (gold coreference) and 57.4% (Stanford coreference), whereas the learning-based approach achieves accuracies of 86.4% (gold) and 78.7% (Stanford).
the gold coreference results are better than the Stanford coreference results, and the learningbased results are better than the rule-based results.