Paper: Tracking the Dynamic Evolution of Participants Salience in a Discussion

ACL ID C08-1040
Title Tracking the Dynamic Evolution of Participants Salience in a Discussion
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2008
Authors

We introduce a technique for analyzing the temporal evolution of the salience of par- ticipants in a discussion. Our method can dynamically track how the relative impor- tance of speakers evolve over time using graph based techniques. Speaker salience is computed based on the eigenvector cen- trality in a graph representation of partici- pants in a discussion. Two participants in a discussion are linked with an edge if they use similar rhetoric. The method is dy- namic in the sense that the graph evolves over time to capture the evolution inher- ent to the participants salience. We used our method to track the salience of mem- bers of the US Senate using data from the US Congressional Record. Our analysis investigated how the salience of speakers changes over time. Our results show that th...