Gangal, V., A. Arora, A. Einolghozati, and S. Gupta. “Likelihood Ratios and Generative Classifiers for Unsupervised Out-of-Domain Detection in Task Oriented Dialog”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 05, Apr. 2020, pp. 7764-71, doi:10.1609/aaai.v34i05.6280.