1 We rank the extractions in U R according to how similar their arguments' contextual distributions, P (c|e i ), are to those of the seed arguments.
extractions are ranked according to: where KL represents KL Divergence, and the outer sum is taken over arguments e i of the extraction e. For HMMs, we alternatively rank extractions using the HMM state distributions P (t|e i ) in place of the probabilistic context vectors P (c|e i ).