DAViewer is an interactive visualization system for assisting computational linguistics researchers to explore, compare, evaluate and annotate the results of discourse parsers of a text corpus. This is a research prototype in accompany with a journal publication:
Jian Zhao, Fanny Chevalier, Christopher Collins, and Ravin Balakrishnan. Facilitating Discourse Analysis with Interactive Visualization. IEEE Transactions on Visualization and Computer Graphics (Proceedings of InfoVis 2012), 18(12), pp. 2639–2648, 2012.
For more information, inlcuding video demos, please refer to the publication and visit the author's website at http://www.cs.toronto.edu/~jianzhao/.