Papers by Ruizhe Li
DGST: a Dual-Generator Network for Text Style Transfer (2020.emnlp-main)
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| Challenge: | Existing studies on text style transfer focus on altering sentiment words to preserve attribute-independent information. |
| Approach: | They propose a Dual-Generator network architecture for text Style Transfer using two generators. |
| Outcome: | The proposed model performs better than existing models on Yelp and IMDb datasets. |
Evolutionary Guided Decoding: Iterative Value Refinement for LLMs (2026.acl-long)
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| Challenge: | Existing methods for directing language model outputs are limited in their accuracy due to a distributional gap . existing methods train static value functions on trajectories sampled exclusively from the base policy . |
| Approach: | They propose a framework to bridge a distributional gap in the accuracy of value functions . they propose RLHF to align language models with human values and task requirements . |
| Outcome: | The proposed framework reduces computational costs and improves value function accuracy by leveraging principled value function optimization. |
GenTranslate: Large Language Models are Generative Multilingual Speech and Machine Translators (2024.acl-long)
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| Challenge: | Recent advances in large language models (LLMs) have stepped forward the development of multilingual speech and machine translation by its reduced representation errors and incorporated external knowledge. |
| Approach: | They propose a generative paradigm for translation tasks that integrates the diverse translation versions in N-best list. |
| Outcome: | The proposed model outperforms the state-of-the-art model on speech and machine translation benchmarks on various languages. |
Automated Creativity Evaluation for Large Language Models: A Reference-Based Approach (2025.findings-emnlp)
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| Challenge: | Existing methods for evaluating creativity of machine-generated texts rely on costly manual annotations or fail to align closely with human assessments. |
| Approach: | They propose an automated method based on the Torrance Test of Creative Writing (TTCW) . |
| Outcome: | The proposed method improves the alignment between LLM evaluations and human assessments. |
Marco-Bench-MIF: On Multilingual Instruction-Following Capability of Large Language (2025.acl-long)
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Bo Zeng, Chenyang Lyu, Sinuo Liu, Mingyan Zeng, Minghao Wu, Xuanfan Ni, Tianqi Shi, Yu Zhao, Yefeng Liu, Chenyu Zhu, Ruizhe Li, Jiahui Geng, Qing Li, Yu Tong, Longyue Wang, Weihua Luo, Kaifu Zhang
| Challenge: | Existing datasets for instruction-following are monolingual and centered on English . existing data are unable to capture linguistic and cultural subtle differences . |
| Approach: | They propose an extension of IFEval to a localized multilingual version called Marco-Bench-MIF . their benchmark addresses linguistic constraints and cultural references via translation and verification . |
| Outcome: | The proposed extension of IFEval to a localized multilingual version covers 30 languages with varying levels of localization. |
Improving Variational Autoencoder for Text Modelling with Timestep-Wise Regularisation (2020.coling-main)
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| Challenge: | Variational Autoencoders (VAEs) have been widely used in text modelling but posterior collapse is a problem when RNN-based models are employed. |
| Approach: | They propose a timestep-wise regularisation VAE architecture which can effectively avoid posterior collapse when used in text modelling. |
| Outcome: | The proposed model avoids posterior collapse and can be applied to any RNN-based VAE model. |
Listen Again and Choose the Right Answer: A New Paradigm for Automatic Speech Recognition with Large Language Models (2024.findings-acl)
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| Challenge: | Recent advances in large language models (LLMs) have promoted generative error correction (GER) for automatic speech recognition (ASR). |
| Approach: | They propose a multimodal LLM to receive source speech as extra input and reformat it as a cloze test with logits calibration to remove input information redundancy and simplify GER with clear instructions. |
| Outcome: | The proposed model improves on 9 popular ASR datasets and is faster than vanilla GER. |
FairSteer: Inference Time Debiasing for LLMs with Dynamic Activation Steering (2025.findings-acl)
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| Challenge: | Existing prompt-based debiasing methods exhibit instability due to sensitivity to prompt changes . fine-tuning-based techniques incur substantial computational overhead and catastrophic forgetting . |
| Approach: | They propose a debiasing framework that encodes fairness-related features into separable directions in the hidden activation space. |
| Outcome: | The proposed framework performs inference-time debiasing without requiring retraining or prompt design . it detects bias signatures in activations and then computes debiased steering vectors . the proposed framework is available to download in the u.s. |
DynamicNER: A Dynamic, Multilingual, and Fine-Grained Dataset for LLM-based Named Entity Recognition (2025.emnlp-main)
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Hanjun Luo, Yingbin Jin, Yiran Wang, Xinfeng Li, Tong Shang, Xuecheng Liu, Ruizhe Chen, Kun Wang, Hanan Salam, Qingsong Wen, Zuozhu Liu
| Challenge: | Existing datasets designed for Named Entity Recognition methods are inadequate for LLMs. |
| Approach: | They propose a dataset that is multilingual and multi-granular and enables LLMs to be applied to Named Entity Recognition methods. |
| Outcome: | The proposed dataset is multilingual and multi-granular, covering 8 languages and 155 entity types, with corpora spanning a diverse range of domains. |
Hearing Lips in Noise: Universal Viseme-Phoneme Mapping and Transfer for Robust Audio-Visual Speech Recognition (2023.acl-long)
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| Challenge: | Existing efforts to improve robustness of audio-visual speech recognition with visual information focus on audio modality . current approaches introduce noise adaptation techniques to improve reliability of AVSR task . |
| Approach: | They propose a visual-invariant modality to strengthen robustness of audio-visual speech recognition (AVSR) it can adapt to any testing noises without dependence on noisy training data, a.k.a., unsupervised noise adaptation. |
| Outcome: | The proposed method outperforms existing state-of-the-arts on visual speech recognition task under various noisy and clean conditions. |
Business as Rulesual: A Benchmark and Framework for Business Rule Flow Modeling with LLMs (2026.acl-long)
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| Challenge: | Existing benchmarks for extracting structured procedural knowledge from unstructured business documents are limited by simplistic schemas and shallow logical dependencies. |
| Approach: | They propose a framework for extracting structured procedural knowledge from unstructured business documents . they propose BREX, a carefully curated benchmark comprising 409 real-world business documents and 2,855 expert-annotated rules . |
| Outcome: | The proposed framework outperforms standard prompts in rule extraction and execution. |
Identifying and Mitigating Social Bias Knowledge in Language Models (2025.findings-naacl)
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| Challenge: | Existing methods for debiasing may generate incorrect or nonsensical predictions but leave aside individual commonsense facts, resulting in modified knowledge that elicits unreasonable or undesired predictions. |
| Approach: | They propose a framework that identifies encoding locations of biases within language models and then applies the Fairness-Stamp (FAST) they also propose 'BiaScope' to evaluate the retention of commonsense knowledge and generalization across paraphrased social biase. |
| Outcome: | The proposed framework surpasses state-of-the-art baselines with superior debiasing performance while not compromising the overall model capability for knowledge retention and prediction. |
Anchored Answers: Unravelling Positional Bias in GPT-2’s Multiple-Choice Questions (2025.findings-acl)
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| Challenge: | Large Language Models (LLMs) exhibit a positional bias, particularly an even worse “anchored bias” in the GPT-2 family, where they consistently favour the first choice ‘A’ in MCQs. |
| Approach: | They propose to use the “logit lens” method to trace and modify the internal modules within GPT-2 models responsible for this bias. |
| Outcome: | The proposed approach mitigates the positional bias and improves the accuracy of the GPT-2 model across multiple datasets. |
Overcoming Catastrophic Forgetting by Exemplar Selection in Task-oriented Dialogue System (2024.findings-acl)
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| Challenge: | Experimental results show that HESIT effectively alleviates catastrophic forgetting by exemplar selection, and achieves state-of-the-art performance on the largest CL benchmark of ToDs in terms of all metrics. |
| Approach: | They propose a method to overcome catastrophic forgetting in task-oriented dialogue systems by tracing their hyper-gradients and a retraining strategy that uses influential exemplars for periodic retrains. |
| Outcome: | The proposed method achieves state-of-the-art on the largest CL benchmark of ToDs in terms of all metrics. |
MIR-GAN: Refining Frame-Level Modality-Invariant Representations with Adversarial Network for Audio-Visual Speech Recognition (2023.acl-long)
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| Challenge: | Audio-visual speech recognition (AVSR) leverages multimodal signals to understand human speech. |
| Approach: | They propose an adversarial network to refine frame-level modality-invariant representations to bridge the distribution gap between modalities. |
| Outcome: | The proposed approach outperforms the state-of-the-art on public benchmarks LRS3 and LRS2 on the modalities of AVSR. |
Adaptive Retrieval-Augmented Generation for Conversational Systems (2025.findings-naacl)
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| Challenge: | Existing studies have shown the effectiveness of retrieving and augmenting external knowledge for informative responses. |
| Approach: | They propose to use a gating model to predict if a conversational system requires retrieval-augmented generation to generate high-quality responses with high confidence. |
| Outcome: | The proposed model can predict if a conversational system requires RAG to generate high-quality responses with high confidence. |