Causal analysis of task completion errors in spoken music retrieval interactions Sunao Hara author Norihide Kitaoka author Kazuya Takeda author 2012-05 text Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC’12) Nicoletta Calzolari editor Khalid Choukri editor Thierry Declerck editor Mehmet Uğur Doğan editor Bente Maegaard editor Joseph Mariani editor Asuncion Moreno editor Jan Odijk editor Stelios Piperidis editor European Language Resources Association (ELRA) Istanbul, Turkey conference publication hara-etal-2012-causal https://aclanthology.org/L12-1631/ 2012-05 1365 1372