Hengyu Liu

Dr. Hengyu Liu


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 October 2025
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MSMingxing Shao
Mingxing Shao
TZTiancheng Zhang
Tiancheng Zhang
MYMinghe Yu
Minghe Yu
ZLZhenghao Liu
Zhenghao Liu
YYYifang Yin
Yifang Yin
GYGe Yu
Ge Yu

20 December 2025 in arXiv
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SLSirui Li
Sirui Li
WLWangyue Lu
Wangyue Lu
XSXiaorui Shi
Xiaorui Shi
KWKe Weng
Ke Weng
HSHaozhe Sun
Haozhe Sun
LDLun Du
Lun Du
Automated Theorem Proving (ATP) represents a core research direction in artificial intelligence for achieving formal reasoning and verification, playing a significant role in advancing machine intelligence. However, current large language model (LLM)-based theorem provers suffer from limitations such as restricted domain coverage and weak generalization in mathematical reasoning. To address these issues, we propose MSC-180, a benchmark for evaluation based on the MSC2020 mathematical subject classification. It comprises 180 formal verification problems, 3 advanced problems from each of 60 mathematical branches, spanning from undergraduate to graduate levels. Each problem has undergone multiple rounds of verification and refinement by domain experts to ensure formal accuracy. Evaluations of state-of-the-art LLM-based theorem provers under the pass@32 setting reveal that the best model achieves only an 18.89% overall pass rate, with prominent issues including significant domain bias (maximum domain coverage 41.7%) and a difficulty gap (significantly lower pass rates on graduate-level problems). To further quantify performance variability across mathematical domains, we introduce the coefficient of variation (CV) as an evaluation metric. The observed CV values are 4-6 times higher than the statistical high-variability threshold, indicating that the models still rely on pattern matching from training corpora rather than possessing transferable reasoning mechanisms and systematic generalization capabilities. MSC-180, together with its multi-dimensional evaluation framework, provides a discriminative and systematic benchmark for driving the development of next-generation AI systems with genuine mathematical reasoning abilities.

25 October 2024 in arXiv
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HCHui Chen
Hui Chen
XFXuhui Fan
Xuhui Fan
Hengyu LiuHengyu Liu
Hengyu Liu
LCLongbing Cao
Longbing Cao
Marked event data captures events by recording their continuous-valued occurrence timestamps along with their corresponding discrete-valued types. They have appeared in various real-world scenarios such as social media, financial transactions, and healthcare records, and have been effectively modeled through Marked Temporal Point Process (MTPP) models. Recently, developing generative models for these MTPP models have seen rapid development due to their powerful generative capability and less restrictive functional forms. However, existing generative MTPP models are usually challenged in jointly modeling events' timestamps and types since: (1) mainstream methods design the generative mechanisms for timestamps only and do not include event types; (2) the complex interdependence between the timestamps and event types are overlooked. In this paper, we propose a novel generative MTPP model called BMTPP. Unlike existing generative MTPP models, BMTPP flexibly models marked temporal joint distributions using a parameter-based approach. Additionally, by adding joint noise to the marked temporal data space, BMTPP effectively captures and explicitly reveals the interdependence between timestamps and event types. Extensive experiments validate the superiority of our approach over other state-of-the-art models and its ability to effectively capture marked-temporal interdependence.

19 October 2026
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Book Chapter
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XLXinyang Li
Xinyang Li
ZCZhihong Cui
Zhihong Cui
ZYZhongming Yao
Zhongming Yao
ZWZhangkai Wu
Zhangkai Wu
Hengyu LiuHengyu Liu
Hengyu Liu
GYGe Yu
Ge Yu