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University of Richmond

Academic institutionnorthamerica · us
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Research library3linked papers
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Selected work

Representative Papers

Lagrangian and Hamiltonian Neural Networks With a Dissipative System

Sep 25, 2026

This study addresses the limitation of conventional Lagrangian and Hamiltonian neural networks, which are restricted to non-dissipative systems and struggle to model explicitly time-dependent dissipative dynamics. To overcome this, the proposed approach extends these network architectures to time-varying dissipative systems, with validation conducted through comparative simulations of damped and undamped harmonic oscillators. The resulting model successfully predicts the physical behavior of damped systems while effectively learning the underlying Lagrangian and Hamiltonian functions, thereby revealing novel characteristics of time-dependent dissipative mechanisms. By transcending the theoretical constraints inherent to conservative systems, this work establishes a new paradigm for discovering physical laws governing complex dissipative dynamics.

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Finding Answers in Thought Matters: Revisiting Evaluation on Large Language Models with Reasoning

Oct 16, 2025

Existing evaluations of large language models’ reasoning capabilities exhibit high sensitivity to answer extraction methods, resulting in unstable and inconsistent assessment outcomes. To address this, we propose Answer Regeneration (AR), an evaluation enhancement framework that decouples the reasoning process from answer extraction. AR introduces an additional reasoning step—prompting the model to regenerate its final answer based on its prior reasoning trace—thereby enabling robust answer extraction independent of heuristic rules. The framework is task-agnostic and applicable to diverse reasoning-intensive settings, including mathematical reasoning and open-domain question answering. Experiments across multiple benchmarks demonstrate that AR significantly improves evaluation robustness and accuracy, mitigating performance fluctuations induced by varying extraction strategies. Overall, AR provides a reliable, general-purpose solution for more stable and trustworthy assessment of LLM reasoning capabilities.

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Recent publications

Latest Papers

Lagrangian and Hamiltonian Neural Networks With a Dissipative System

Sep 25, 2026

This study addresses the limitation of conventional Lagrangian and Hamiltonian neural networks, which are restricted to non-dissipative systems and struggle to model explicitly time-dependent dissipative dynamics. To overcome this, the proposed approach extends these network architectures to time-varying dissipative systems, with validation conducted through comparative simulations of damped and undamped harmonic oscillators. The resulting model successfully predicts the physical behavior of damped systems while effectively learning the underlying Lagrangian and Hamiltonian functions, thereby revealing novel characteristics of time-dependent dissipative mechanisms. By transcending the theoretical constraints inherent to conservative systems, this work establishes a new paradigm for discovering physical laws governing complex dissipative dynamics.

0 citationsRead paper

Finding Answers in Thought Matters: Revisiting Evaluation on Large Language Models with Reasoning

Oct 16, 2025

Existing evaluations of large language models’ reasoning capabilities exhibit high sensitivity to answer extraction methods, resulting in unstable and inconsistent assessment outcomes. To address this, we propose Answer Regeneration (AR), an evaluation enhancement framework that decouples the reasoning process from answer extraction. AR introduces an additional reasoning step—prompting the model to regenerate its final answer based on its prior reasoning trace—thereby enabling robust answer extraction independent of heuristic rules. The framework is task-agnostic and applicable to diverse reasoning-intensive settings, including mathematical reasoning and open-domain question answering. Experiments across multiple benchmarks demonstrate that AR significantly improves evaluation robustness and accuracy, mitigating performance fluctuations induced by varying extraction strategies. Overall, AR provides a reliable, general-purpose solution for more stable and trustworthy assessment of LLM reasoning capabilities.

0 citationsRead paper