Clustering performs spectral graph clustering (Pedregosa et al., 2011), which represents commonly used clustering algorithms for event coreference resolution.
we train our event extraction system and local coreference resolution classifier on 310 documents from the KBP 2015 corpus that consists of both discussion forum documents and news articles, tune the hyper-parameters corresponding to ILP using 50 news articles 6 from the KBP 2015 corpus and evaluate our system on 4 The ECB+ (Cybulska and Vossen, 2014) corpus is another commonly used dataset for evaluating event coreference resolution performance.