Papers by Minghui Liu

17 papers
VoxpopuliTTS: a large-scale multilingual TTS corpus for zero-shot speech generation (2025.coling-main)

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Challenge: Existing multilingual TTS datasets are limited in speech generation fields due to lack of quality data.
Approach: They propose to use 30,000 hours of high-quality speech data across 3 languages . they filter out low-quality text-text pairs and concatenate short transcripts .
Outcome: The proposed dataset comprises 30,000 hours of high-quality speech data, across 3 languages with multiple speakers and styles, suitable for various speech tasks such as TTS and ASR.
A Dialogue-based Information Extraction System for Medical Insurance Assessment (2021.findings-acl)

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Challenge: a new system that integrates advanced NLP technologies for medical insurance assessment is proposed . the average time cost of the procedure is reduced from 55 minutes to 35 minutes .
Approach: They propose a dialogue-based information extraction system that integrates advanced NLP technologies for medical insurance assessment.
Outcome: The proposed system reduces the time cost of the procedure from 55 minutes to 35 minutes and saves 30% human resources cost compared with the previous offline procedure.
CART: A Generative Cross-Modal Retrieval Framework With Coarse-To-Fine Semantic Modeling (2025.acl-long)

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Challenge: Cross-modal retrieval tasks are used to retrieve data from one modality or another based on a query from another modality.
Approach: They propose a generative cross-modal retrieval framework based on coarse-to-fine semantic modeling . they propose combining K-Means and RQ-VAE to discretize multimodal data into token sequences that support autoregressive generation.
Outcome: The proposed framework achieves excellent performance and efficiency in multimodal retrieval tasks.
A Copy-Augmented Generative Model for Open-Domain Question Answering (2022.acl-short)

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Challenge: Existing open-domain question answering approaches follow a two-stage paradigm retriever then reader.
Approach: They propose a novel reader-based generative approach that incorporates extractive and generative readers.
Outcome: The proposed model improves on two benchmark datasets, Natural Questions and TriviaQA.
Beyond the Last Frame: Process-aware Evaluation for Generative Video Reasoning (2026.acl-long)

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Challenge: Existing evaluation frameworks often rely on single-frame assessments, which can lead to outcome-hacking.
Approach: They propose a process-aware evaluation paradigm that uses a hierarchical rubric to evaluate the validity of the intermediate steps and the final result.
Outcome: The proposed model achieves POC@1.0 only about 20% and exhibits significant outcome-hacking.
Transfer Learning for Context-Aware Question Matching in Information-seeking Conversations in E-commerce (P18-2)

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Challenge: Recent researches focus on deep learning and reinforcement learning for multi-turn information seeking conversation systems.
Approach: They propose an efficient and effective multi-turn conversation model based on convolutional neural networks and extend it to adapt the knowledge learned from a resource-rich domain to enhance the performance.
Outcome: The proposed model performs better than the existing model on an industrial chatbot called AliMe Assist.
Domain-aware and Co-adaptive Feature Transformation for Domain Adaption Few-shot Relation Extraction (2024.lrec-main)

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Challenge: Existing approaches to relation extraction focus on the source domain, which makes it difficult to accurately transfer useful knowledge to the target domain.
Approach: They propose a domain-aware and co-adaptive feature transformation approach to address these issues by leveraging the target domain distribution features to guide the domain-based feature transformations.
Outcome: The proposed method outperforms existing models and achieves state-of-the-art performance on a benchmark dataset.
Democratizing Reasoning Ability: Tailored Learning from Large Language Model (2023.emnlp-main)

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Challenge: Large language models (LLMs) exhibit impressive emergent abilities in natural language processing, but their democratization is hindered due to huge computation requirements and closed-source nature.
Approach: They propose a tailored learning approach to distill the exclusive reasoning ability to smaller LMs to facilitate democratization.
Outcome: The proposed approach enables the democratization of the exclusive reasoning ability by leveraging the black-box model as a reasoning teacher.
Towards IP Intelligence: Benchmarking Large Language Models on Intellectual Property Knowledge and Practice (2026.findings-acl)

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Challenge: Existing datasets and benchmarks focus only on patents or cover limited aspects of the IP field, lacking alignment with real-world scenarios.
Approach: They propose a bilingual IP task taxonomy and a large-scale bilingual benchmark to evaluate LLMs in real-world IP practice.
Outcome: The proposed model achieves only 75.8% accuracy, indicating room for improvement . open-source IP and law-oriented models lag behind closed-source general-purpose models .
ARTIST: A Transformer-based Chinese Text-to-Image Synthesizer Digesting Linguistic and World Knowledge (2022.findings-emnlp)

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Challenge: Text-to-Image Synthesis (TIS) is a popular task to convert natural language texts into realistic images.
Approach: They propose a transformer-based Chinese text-to-image synthesizer for high-resolution image generation that incorporates linguistic and relational knowledge facts into the model to ensure better performance without the usage of ultra-large models.
Outcome: The proposed model outperforms existing models in Chinese with linguistic and relational knowledge facts.
EasyNLP: A Comprehensive and Easy-to-use Toolkit for Natural Language Processing (2022.emnlp-demos)

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Challenge: Pre-Trained Models (PTMs) have reshaped the development of natural language processing (NLP) but it is not easy to obtain high-performing PTMs without a large amount of labeled training data and deploy them online with fast inference speed.
Approach: They propose to make it easy to build NLP applications with knowledge-enhanced pre-training and knowledge distillation.
Outcome: EasyNLP supports a comprehensive suite of NLP algorithms and features knowledge-enhanced pre-training, knowledge distillation and few-shot learning functionalities.
Streaming Hallucination Detection in Long Chain-of-Thought Reasoning (2026.findings-acl)

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Challenge: Long chain-of-thought reasoning improves performance of large language models, yet hallucinations in such settings often emerge subtly and propagate across reasoning steps.
Approach: They propose to treat step-level hallucination judgments as local observations and introduce a cumulative prefix-level signal that tracks the global evolution of the reasoning state over the entire trajectory.
Outcome: The proposed method enables streaming hallucination detection in long CoT reasoning, providing real-time, interpretable evidence.
DocEE-zh: A Fine-grained Benchmark for Chinese Document-level Event Extraction (2024.findings-emnlp)

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Challenge: Chinese document-level event extraction is still largely unexplored.
Approach: They propose a Chinese document-level event extraction dataset with over 36,000 events and 210,000 arguments.
Outcome: The proposed dataset includes over 36,000 events and more than 210,000 arguments . it is an extension of the DocEE dataset, utilizing the same event schema and annotated by human experts.
HighMATH: Evaluating Math Reasoning of Large Language Models in Breadth and Depth (2025.findings-emnlp)

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Challenge: a gap in math models' accuracy has been widened with the development of large language models (LLMs) . a new study aims to bridge this gap by evaluating a set of high-level math reasoning models .
Approach: They propose to evaluate large language models on existing math benchmarks to bridge this gap . they collect 5,293 problems from Chinese senior high school mathematics exams .
Outcome: The proposed model is based on o1-like models and a high-level model.
Learning from Miscellaneous Other-Class Words for Few-shot Named Entity Recognition (2021.acl-long)

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Challenge: Existing methods to classify named entity mentions with fewshots fail to differentiate rich semantics in other-class words, which will aggravate overfitting under few shot scenario.
Approach: They propose a model that can automatically induce different unde- fined classes from the other class to improve few-shot Named Entity Recognition (NER) .
Outcome: The proposed model outperforms five state-of-the-art models in 1- shot and 5-shots settings on four NER bench marks.
Mitigating Hallucinations in LM-Based TTS Models via Distribution Alignment Using GFlowNets (2025.emnlp-main)

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Challenge: Existing mitigation strategies for Text-to-Speech systems require excessive training resources or inference latency.
Approach: They propose a GFlOwNet-guided distribution AlignmenT framework that mitigates hallucinations without relying on massive resources or inference latency.
Outcome: The proposed framework reduces over 50% character error rates and lowers uncertainty by up to 58% on challenging test cases.
Siamese Network-Based Supervised Topic Modeling (D18-1)

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Challenge: Label-specific topics are widely used for supporting personality psychology, aspectlevel sentiment analysis, and crossdomain sentiment classification.
Approach: They propose a supervised topic model based on the Siamese network which trades off label-specific word distributions with document-specific label distributions in a uniform framework.
Outcome: The proposed model can trade off label-specific word distributions with document-specific label distributions in a uniform framework.

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