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Anxiang Ma

6 accepted papers

2026

Probing Preference Representations: A Multi-Dimensional Evaluation and Analysis Method for Reward Models

AAAI 2026technical

Previous methods evaluate reward models by testing them on a fixed pairwise ranking test set, but they typically do not provide performance information on each preference dimension. In this work, we address the evaluation challenge of reward models by probing preference representations. To confirm t

Cited by 0SourcePDFScholar
2024

Exploiting Target Language Data for Neural Machine Translation Beyond Back Translation

ACL 2024findings

Neural Machine Translation (NMT) encounters challenges when translating in new domains and low-resource languages. To address these issues, researchers have proposed methods to integrate additional knowledge into NMT, such as translation memories (TMs). However, finding TMs that closely match the in…

Cited by 0SourcePDFScholar
2023

Bridging the Granularity Gap for Acoustic Modeling

ACL 2023findings

While Transformer has become the de-facto standard for speech, modeling upon the fine-grained frame-level features remains an open challenge of capturing long-distance dependencies and distributing the attention weights. We propose Progressive Down-Sampling (PDS) which gradually compresses the acous…

2023

CTC-based Non-autoregressive Speech Translation

ACL 2023long

Combining end-to-end speech translation (ST) and non-autoregressive (NAR) generation is promising in language and speech processing for their advantages of less error propagation and low latency. In this paper, we investigate the potential of connectionist temporal classification (CTC) for non-autor…

2022

Multi-Path Transformer is Better: A Case Study on Neural Machine Translation

EMNLP 2022finding

For years the model performance in machine learning obeyed a power-law relationship with the model size. For the consideration of parameter efficiency, recent studies focus on increasing model depth rather than width to achieve better performance. In this paper, we study how model width affects the…

2022

On Vision Features in Multimodal Machine Translation

ACL 2022long

Previous work on multimodal machine translation (MMT) has focused on the way of incorporating vision features into translation but little attention is on the quality of vision models. In this work, we investigate the impact of vision models on MMT. Given the fact that Transformer is becoming popular…