To the best of our knowledge, we are the first to consider using metric learning to learn embeddings from episodes of user activity.
method mRR (⇑) mR (⇓) R@1 (⇑) R@2 R@4 R@8 R@16 R@32    For certain tasks it is useful to identify groups of accounts shared by the same author or to identify groups of accounts behaving in a similar fashion (Solorio et al., 2013;Tsikerdekis and Zeadally, 2014).