Although both this paper and Ponzetto and Strube (2006) employs semantic role features, their ways of deriving such features are much different due to different driving forces/motivations behind.
their contributions on coreference resolution are different: while the semantic role features in Ponzette and Strube (2006) captures the predicate-argument structure information and contributes much to common noun resolution and their contribution on pronoun resolution can be ignored, the centering-motivated semantic role features in this paper contribute much in pronoun resolution.