Search Results for author: Chao Guo

Found 7 papers, 1 papers with code

Stop Summation: Min-Form Credit Assignment Is All Process Reward Model Needs for Reasoning

1 code implementation21 Apr 2025 Jie Cheng, Ruixi Qiao, Lijun Li, Chao Guo, Junle Wang, Gang Xiong, Yisheng Lv, Fei-Yue Wang

In this paper, we identify the main cause of PRM-induced reward hacking: the canonical summation-form credit assignment in reinforcement learning (RL), which defines the value as cumulative gamma-decayed future rewards, easily induces LLMs to hack steps with high rewards.

All Form +2

Through the Curved Cover: Synthesizing Cover Aberrated Scenes with Refractive Field

no code implementations10 Nov 2024 Liuyue Xie, Jiancong Guo, Laszlo A. Jeni, Zhiheng Jia, Mingyang Li, Yunwen Zhou, Chao Guo

To motivate further studies on this problem, we provide the benchmarked dataset containing real and synthetic walkable scenes captured with protective cover optical aberrations.

NeRF Novel View Synthesis

A Hamiltonian Approach to Barrier Option Pricing Under Vasicek Model

no code implementations14 Jul 2023 Chao Guo, Ning Yao

In this paper, we study option pricing under Vasicek Model by a Hamiltonian approach.

Path Integral Method for Pricing Proportional Step Double-Barrier Option with Time Dependent Parameters

no code implementations15 Feb 2023 Qi Chen, Chao Guo

Path integral method in quantum mechanics provides a new thinking for barrier option pricing.

A Hamiltonian Approach to Floating Barrier Option Pricing

no code implementations26 Sep 2022 Qi Chen, Hong-tao Wang, Chao Guo

Hamiltonian approach in quantum mechanics provides a new thinking for barrier option pricing.

A multi view multi stage and multi window framework for pulmonary artery segmentation from CT scans

no code implementations8 Sep 2022 Zeyu Liu, Yi Wang, Jing Wen, Yong Zhang, Hao Yin, Chao Guo, Zhongyu Wang

In addition, in order to improve the segmentation performance, we adopt multi-view and multi-window level method, at the same time we employ a fine-tune strategy to mitigate the impact of inconsistent labeling.

Segmentation

Path Integral Method for Proportional Step and Proportional Double-Barrier Step Option Pricing

no code implementations16 Dec 2021 Qi Chen, Chao Guo

Path integral method in quantum mechanics provides a new thinking for barrier option pricing.

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