Papers by Udhyakumar Nallasamy
Empirical Evaluation of Active Learning Techniques for Neural MT (D19-61)
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| Challenge: | Several active learning (AL) algorithms for machine translation (MT) have been well-studied for phrase-based MT. |
| Approach: | They propose to use a phrase-based algorithm to compare different AL methods in a simulated AL framework to demonstrate how unsupervised pre-training and paraphrastic embedding can be used to improve existing AL methods. |
| Outcome: | The proposed method outperforms existing methods in the context of phrase-based MT and is based on a simulated phrase-driven dataset. |
Variational Neural Machine Translation with Normalizing Flows (2020.acl-main)
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| Challenge: | Existing frameworks for learning informative latent variables are limited by limitations . existing models rely on strong assumptions on distribution of latent code . |
| Approach: | They propose to apply a variational neural machine translation framework to a Transformer . they propose to introduce a more flexible approximate posterior based on normalizing flows . |
| Outcome: | The proposed framework outperforms baseline models under in-domain and out-of-domain conditions. |
Jointly Learning to Align and Translate with Transformer Models (D19-1)
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| Challenge: | Existing word alignment models are not accurate for word alignments. |
| Approach: | They propose a method to train a Transformer model to produce accurate translations and alignments. |
| Outcome: | The proposed model outperforms GIZA++ trained models on translation and alignment tasks while maintaining translation accuracy. |
Consistent Transcription and Translation of Speech (2020.tacl-1)
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| Challenge: | Existing models that translate without transcribing focus on translation quality, while transcription receives less emphasis. |
| Approach: | They propose a method to evaluate consistency and compare different approaches . they propose 'coupled inference' models that feature a coupled inference procedure can achieve strong consistency. |
| Outcome: | The proposed model is poorly suited to the joint transcription/translation task, but is strong enough to train for consistency. |