Papers by Andrey Malinin
Uncertainty Measures in Neural Belief Tracking and the Effects on Dialogue Policy Performance (2021.emnlp-main)
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Carel van Niekerk, Andrey Malinin, Christian Geishauser, Michael Heck, Hsien-chin Lin, Nurul Lubis, Shutong Feng, Milica Gasic
| Challenge: | Neural dialogue belief trackers that take uncertainty into account are often overconfident in their decisions and therefore less robust. |
| Approach: | They propose to use different uncertainty measures in neural belief tracking to integrate uncertainty into the feature space of the policy and train policies through interaction with a user simulator. |
| Outcome: | The proposed approach improves both performance and robustness of the downstream dialogue policy. |
Multi-Sentence Resampling: A Simple Approach to Alleviate Dataset Length Bias and Beam-Search Degradation (2021.emnlp-main)
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| Challenge: | Neural Machine Translation suffers from a beam-search problem after a certain point, especially for long sentences. |
| Approach: | They propose a data augmentation technique that concatenates several sentences from the original dataset to make a long training example. |
| Outcome: | The proposed technique significantly reduces degradation with growing beam size and improves translation quality on the IWSTL15 En-Vi, IWStl17 En-Fr, and WMT14 En-De datasets. |