WDS 0.931 [ 0.905 , 0.958 ] 0.813 [ 0.738 , 0.887 ] 0.872 R=Random ; LR=LexRank ; DR=DivRank ; DR ( p ) =DivRank with Priors ; CLR=C-LexRank ; WDS=Word Distributional Similarity ; C.I.=Confidence Interval