Domain Dependence The accuracy figure of M1 for each noun is obtained by training a WSD classifier on the manually sense-tagged training data (with lumped senses) provided by SENSEVAL-2 organizers, and testing on the corresponding official test data (also with lumped senses), both of which come from similar domains.
the P1 score of each noun is obtained by training the WSD classifier on a mixture of six parallel corpora, and tested on the official SENSEVAL-2 test set, and hence the training and test data come from dissimilar domains in this case.