Papers by Jinyu Liu

14 papers
WavLLM: Towards Robust and Adaptive Speech Large Language Model (2024.findings-emnlp)

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Challenge: Recent advances in large language models (LLMs) have expanded their scope to encompass multimodal functions.
Approach: They propose a robust and adaptive speech large language model with dual encoders . they validate the model on universal speech benchmarks and apply it to specialized speech-question-answer datasets based on a CoT approach .
Outcome: The proposed model achieves state-of-the-art performance across a range of speech tasks on the same model size.
Autoregressive Speech Synthesis without Vector Quantization (2025.acl-long)

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Challenge: MELLE is a novel language modeling approach for text-to-speech synthesis that generates continuous tokens from text . authors demonstrate that it reduces the need for vector quantization and improves model robustness .
Approach: They propose to autoregressively generate continuous mel-spectrogram frames directly from text condition, bypassing vector quantization.
Outcome: The proposed model achieves superior performance across multiple metrics and is more streamlined.
AgentThink: A Unified Framework for Tool-Augmented Chain-of-Thought Reasoning in Vision-Language Models for Autonomous Driving (2025.findings-emnlp)

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Challenge: Vision-Language Models struggle with hallucinations, inefficient reasoning, and limited real-world validation hinders accurate perception and robust step-by-step reasoning.
Approach: AgentThink integrates Chain-of-Thought reasoning with dynamic, agent-style tool invocation for autonomous driving tasks.
Outcome: Experiments on the DriveLMM-o1 benchmark show AgentThink significantly boosts overall reasoning scores by 53.91% and enhances answer accuracy by 33.54% .
SLAM-Omni: Timbre-Controllable Voice Interaction System with Single-Stage Training (2025.findings-acl)

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Challenge: a new spoken dialogue system with single-stage training is demonstrating its low latency and high quality . SLAM-Omni achieves zero-shot timbre control by modeling spoken language with semantic tokens .
Approach: They propose a timbre-controllable, end-to-end voice interaction system with single-stage training.
Outcome: The proposed system outperforms previous models on 4 GPUs with limited data.
Discarding the Crutches: Adaptive Parameter-Efficient Expert Meta-Learning for Continual Semantic Parsing (2025.coling-main)

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Challenge: Continual Semantic Parsing (CSP) enables parsers to generate SQL from natural language questions in task streams, using minimal annotated data to handle dynamically evolving databases in real-world scenarios.
Approach: They propose a Adaptive PET eXpert meta-learning approach that assists experts in adaptively warming up, ensuring better model initialization.
Outcome: The proposed method outperforms existing methods on two benchmarks and achieves superior performance without data replay or ideal settings.
SpeechUT: Bridging Speech and Text with Hidden-Unit for Encoder-Decoder Based Speech-Text Pre-training (2022.emnlp-main)

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Challenge: Existing models for pre-training text and speech are based on unlabeled audio data.
Approach: They propose a unified-modal speech-unit-text pre-training model that connects speech encoders and text decoders with a shared unit encoder.
Outcome: The proposed model improves on automatic speech recognition and speech translation tasks and achieves state-of-the-art performance on both the LibriSpeech ASR and MuST-C ST tasks.
Predicting Machine Translation Performance on Low-Resource Languages: The Role of Domain Similarity (2024.findings-eacl)

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Challenge: Existing approaches for predicting the performance of NLP models for low-resource languages (LRLs) focus on high-resourced languages, overlooking LRLs and domain shifts.
Approach: They investigate the impact of domain similarity on predicting performance of machine translation models in low-resource languages.
Outcome: The results show that domain similarity has the most important impact on predicting the performance of Machine Translation models.
Beyond the Granularity: Multi-Perspective Dialogue Collaborative Selection for Dialogue State Tracking (2022.acl-long)

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Challenge: Experimental results show that task-oriented dialogue systems have attracted growing attention and achieved substantial progress.
Approach: They propose a method that dynamically selects relevant dialogue contents for each slot . they retrieve turn-level utterances and evaluate their relevance to the slot from three perspectives .
Outcome: The proposed method achieves state-of-the-art performance on MultiWOZ 2.1 and MultiWOz 2.2 and superior performance on multiple mainstream benchmark datasets.
Closing the Modality Reasoning Gap for Speech Large Language Models (2026.acl-long)

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Challenge: Recent advances in Speech Large Language Models have a modality reasoning gap that is not addressed by prior work.
Approach: They propose a reinforcement-learning framework that aligns text-conditioned and speech-conditioned trajectories through an asymmetric reward design.
Outcome: Experiments on MMSU and OBQA show that the proposed framework narrows the modality reasoning gap and achieves state-of-the-art performance among 7B-scale Speech LLMs.
From Signal Degradation to Computation Collapse: Uncovering the Two Failure Modes of LLM Quantization (2026.findings-acl)

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Challenge: Existing research on PTQ spans three primary directions.
Approach: They conduct a systematic analysis of post-training quantization failures using PTQ . they show that targeted repair can mitigate Signal Degradation but remains ineffective for Computation Collapse .
Outcome: The proposed method mitigates Signal Degradation but remains ineffective for Computation Collapse.
Task-Stratified Knowledge Scaling Laws for Post-Training Quantized Large Language Models (2026.findings-acl)

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Challenge: Existing scaling laws focus on general performance, overlooking crucial fine-grained factors and how quantization differentially impacts diverse knowledge capabilities.
Approach: They propose a framework that unifies model size, bit-width, and fine-grained factors into memorization, application, and reasoning.
Outcome: The proposed framework shows strong fit and cross-architecture consistency on 293 different PTQ configurations.
SpeechT5: Unified-Modal Encoder-Decoder Pre-Training for Spoken Language Processing (2022.acl-long)

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Challenge: Existing work shows that pre-trained models can improve in various natural language processing tasks.
Approach: They propose a unified-modal encoder-decoder framework that pre-trains speech-text representations using large-scale unlabeled speech and text data.
Outcome: The proposed framework is superior to existing models on speech-to-text processing tasks.
A Reproducibility Study on Quantifying Language Similarity: The Impact of Missing Values in the URIEL Knowledge Base (2024.naacl-srw)

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Challenge: URIEL aggregates linguistic information for 4,005 languages and computes distances based on this information.
Approach: They propose to use a typological knowledge base to quantify language similarity to investigate URIEL's ambiguity in calculating language distances and handling missing values.
Outcome: The URIEL knowledge base does not provide information about typological features for 31% of the languages it represents, undermining the reliability of the database, especially on low-resource languages.
SpeechLLM-as-Judges: Towards General and Interpretable Speech Quality Evaluation (2026.acl-long)

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Challenge: Existing methods for evaluating the perceptual quality of synthetic speech are limited due to the complexity of perceptual quality factors and the diversity of speech generation tasks.
Approach: They propose a new paradigm for enabling large language models to conduct structured speech quality evaluation using a large-scale dataset.
Outcome: The proposed model performs well across tasks and languages.

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