Christopher A. Olshefski - Publications
Graduate Student Assistant


Olshefski, C., Lugini, L., Singh, R., Litman, D., Godley, A. (2020). The Discussion Tracker Corpus of Collaborative Argumentation. In Proceedings of the 12th Edition of its Language Resources and Evaluation Conference. (pp. 1033-1043). Marseille, France.
Although NLP research on argument mining has advanced considerably in recent years, most studies draw on corpora of asynchronous and written texts, often produced by individuals. Few published corpora of synchronous, multi-party argumentation are available. The Discussion Tracker corpus, collected in high school English classes, is an annotated dataset of transcripts of spoken, multi-party argumentation. The corpus consists of 29 multi-party discussions of English literature transcribed from 985 minutes of audio. The transcripts were annotated for three dimensions of collaborative argumentation: argument moves (claims, evidence, and explanations), specificity (low, medium, high) and collaboration (e.g., extensions of and disagreements about others’ ideas). In addition to providing descriptive statistics on the corpus, we provide performance benchmarks and associated code for predicting each dimension separately, illustrate the use of the multiple annotations in the corpus to improve performance via multi-task learning, and finally discuss other ways the corpus might be used to further NLP research. More


Lugini, L., Litman, D., Godley, A., & Olshefski, C. (2018). Annotating Student Talk in Text-based Classroom Discussions. In Proceedings of the Thirteenth Workshop on Innovative Use of NLP for Building Educational Applications (pp. 110-116).
Christopher A. Olshefski


University of Pittsburgh
740 Learning Research and Development Center
3939 O'Hara Street
Pittsburgh, PA 15260