BART Model trained for Question Generation in an unsupervised manner using Back-Training algorithm (Kulshreshtha et al, EMNLP 2021). The dataset used are unaligned questions and passages from MLQuestions dataset.

The Back-Training algorithm was presented in Back-Training excels Self-Training at Unsupervised Domain Adaptation of Question Generation and Passage Retrieval by Devang Kulshreshtha, Robert Belfer, Iulian Vlad Serban, Siva Reddy in Here the abstract:

In this work, we introduce back-training, an alternative to self-training for unsupervised domain adaptation (UDA) from source to target domain. While self-training generates synthetic training data where natural inputs are aligned with noisy outputs, back-training results in natural outputs aligned with noisy inputs. This significantly reduces the gap between the target domain and synthetic data distribution, and reduces model overfitting to the source domain. We run UDA experiments on question generation and passage retrieval from the Natural Questions domain to machine learning and biomedical domains. We find that back-training vastly outperforms self-training by a mean improvement of 7.8 BLEU4 points on generation, and 17.6% top-20 retrieval accuracy across both domains. We further propose consistency filters to remove low-quality synthetic data before training. We also release a new domain-adaptation datasetMLQuestions containing 35K unaligned questions, 50K unaligned passages, and 3K aligned question-passage pairs.

The training script can be found here

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