In recent years there has been a lot of work to develop anaphora resolution algorithms using both symbolic and statistical methods that could be quantitatively evaluated (Humphreys et al., 1997;Ng and Cardie, 2002) but this work focused on identity relations; bridging references were explicitly excluded from the MUC coreference task because of the problems with reliability discussed earlier.
most work on bridging has been theoretical, like the work by Asher and Lascarides (1998).