| Challenge: | Neural machine translation (NMT) has achieved great success due to the ability to generate high-quality sentences. |
| Approach: | They propose a training strategy with a multi-task learning paradigm to build a faithfulness enhanced NMT model. |
| Outcome: | The proposed model can generate high-quality sentences that are very close to natural language. |
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Bridging the Gap between Training and Inference: Multi-Candidate Optimization for Diverse Neural Machine Translation (2022.findings-naacl)
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| Challenge: | Existing diverse NMT models lack translation diversity due to a discrepancy between training and inference . despite the success of diverse NTM, there is still a lack of translation diversity . |
| Approach: | They propose a multi-candidate optimization framework for diverse NMT to deal with this defect. |
| Outcome: | The proposed framework is transparent to basic diverse NMT models, and universally makes better trade-off between diversity and quality. |
Bridging the Gap between Training and Inference for Neural Machine Translation (P19-1)
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| Challenge: | Neural Machine Translation generates target words sequentially while at inference it has to generate the entire sequence from scratch. |
| Approach: | They propose to use ground truth and inference to generate target words sequentially while at inference it has to generate the entire sequence from scratch. |
| Outcome: | Experiments on Chinese->English and WMT’14 English->German translation tasks show that the proposed model can achieve significant improvements on multiple datasets. |
Multi-perspective Alignment for Increasing Naturalness in Neural Machine Translation (2025.acl-long)
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| Challenge: | Neural machine translation systems amplify lexical biases, rendering outputs artificially impoverished . Attempts to increase naturalness in NMT can fall short in terms of content preservation . |
| Approach: | They propose a method that rewards both naturalness and content preservation . they use multiple perspectives to produce more natural translations . |
| Outcome: | The proposed method produces translations that are lexically richer and exhibit more properties of human-written language without loss in translation accuracy. |
Competency-Aware Neural Machine Translation: Can Machine Translation Know its Own Translation Quality? (2022.emnlp-main)
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| Challenge: | Neural machine translation models are often criticized for failures that happen without competency awareness. |
| Approach: | They propose a method that extends conventional NMT with a self-estimator to translate a source sentence and estimate its competency. |
| Outcome: | The proposed method performs on translation tasks intact and on quality estimation tasks better than existing methods. |
Addressing Asymmetry in Multilingual Neural Machine Translation with Fuzzy Task Clustering (2022.coling-1)
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| Challenge: | Existing clustering methods cannot handle asymmetric problem in multilingual NMT . existing models cannot handle the asymmetry problem since there are thousands of languages involved . |
| Approach: | They propose a fuzzy task clustering method to address the asymmetric problem in multilingual NMT by using task affinity as the clustering criterion. |
| Outcome: | The proposed method outperforms baselines for a multilingual model and the existing models. |
Machine Translation for Machines: the Sentiment Classification Use Case (D19-1)
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| Challenge: | Traditionally, machine translation (MT) pursues a "human-oriented" objective: generating fluent output for a downstream task. |
| Approach: | They propose a neural machine translation approach that uses weak feedback to generate translations that are best suited for a downstream task. |
| Outcome: | The proposed approach outperforms general-purpose models and reinforcement learning methods on German and Italian tweets. |
Multi-Task Neural Model for Agglutinative Language Translation (2020.acl-srw)
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| Challenge: | Neural machine translation (NMT) has been gaining popularity in high-resource translation tasks, but struggles in low-ressource and morphologically-rich scenarios. |
| Approach: | They propose a multi-task neural model that jointly learns to perform bi-directional translation and agglutinative language stemming. |
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Improving Neural Machine Translation Robustness via Data Augmentation: Beyond Back-Translation (D19-55)
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| Challenge: | Neural Machine Translation models are sensitive to noise in the input data. |
| Approach: | They propose new methods to extend limited noisy data and further improve NMT robustness to noise while keeping the models small. |
| Outcome: | The proposed methods extend limited noisy data and improve robustness to noise while keeping the models small. |
Breaking the Corpus Bottleneck for Context-Aware Neural Machine Translation with Cross-Task Pre-training (2021.acl-long)
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| Challenge: | Context-aware neural machine translation (NMT) remains challenging due to the lack of large-scale document-level parallel corpora. |
| Approach: | They propose to use large-scale parallel datasets and source-side monolingual documents to improve context-aware neural machine translation. |
| Outcome: | The proposed model can be used to translate both sentences and documents on four translation tasks. |
Prompt-Driven Neural Machine Translation (2022.findings-acl)
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| Challenge: | Neural machine translation models still face various challenges including fragility and lack of style flexibility. |
| Approach: | They propose to incorporate prompts into neural machine translation to improve translation control and style flexibility. |
| Outcome: | Empirical results show that the proposed method improves translation control and quality and improves human-in-the-loop translation. |