Massimo Poesio and Ron Artstein.
Annotating (anaphoric) ambiguity.
Paper presented at Corpus linguistics, Birmingham, England, July 2005.

Full paper in PDF (64K)

Abstract: We report the results of a preliminary study attempting to identify ambiguous expressions in spoken language dialogues. In this study we developed methods for marking explicit ambiguity, and generalized previous proposals by Passonneau concerning a distance metric for anaphora to be used with the α coefficient to allow for ambiguous annotations.

Full paper in PDF (64K)