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Zehua Liu

8 accepted papers

2026

DeepOR: A Deep Reasoning Foundation Model for Optimization Modeling

AAAI 2026technical

Optimization modeling plays a critical role in supporting optimal decision-making across various domains. Previous works have demonstrated that large language models (LLMs) tailored for optimization modeling have significantly automated and simplified this process. However, these models typically em

Cited by 0SourcePDFScholar
2025

Activation-Guided Consensus Merging for Large Language Models

NeurIPS 2025poster

Recent research has increasingly focused on reconciling the reasoning capabilities of System 2 with the efficiency of System 1. While existing training-based and prompt-based approaches face significant challenges in terms of efficiency and stability, model merging emerges as a promising strategy to…

Cited by 0SourceScholar
2025

BPP-Search: Enhancing Tree of Thought Reasoning for Mathematical Modeling Problem Solving

ACL 2025long

LLMs exhibit advanced reasoning capabilities, offering the potential to transform natural language questions into mathematical models. However, existing open-source datasets in operations research domain lack detailed annotations of the modeling process, such as variable definitions, focusing solely…

2025

Decoupling Training-Free Guided Diffusion by ADMM

CVPR 2025poster

In this paper, we consider the conditional generation problem by guiding off-the-shelf unconditional diffusion models with differentiable loss functions in a plug-and-play fashion. While previous research has primarily focused on balancing the unconditional diffusion model and the guided loss throug…

Cited by 0SourcePDFScholar
2025

LoRE-Merging: Exploring Low-Rank Estimation For Large Language Model Merging

EMNLP 2025

While most current approaches rely on further training techniques, such as fine-tuning or reinforcement learning, to enhance model capacities, model merging stands out for its ability of improving models without requiring any additional training. In this paper, we propose a unified framework for mod

Cited by 0SourcePDFScholar
2024

Full Bayesian Significance Testing for Neural Networks in Traffic Forecasting

IJCAI 2024poster

Due to the complex and dynamic traffic contexts, the interpretability and uncertainty of traffic forecasting have gained increasing attention. Significance testing is a powerful tool in statistics used to determine whether a hypothesis is valid, facilitating the identification of pivotal features th…

Cited by 6SourcePDFScholar
2023

Learning with Logical Constraints but without Shortcut Satisfaction

ICLR 2023top-25%

Recent studies have started to explore the integration of logical knowledge into deep learning via encoding logical constraints as an additional loss function. However, existing approaches tend to vacuously satisfy logical constraints through shortcuts, failing to fully exploit the knowledge. In thi…