Search Results for author: Zhenyu Xu

Found 17 papers, 3 papers with code

CodeVision: Detecting LLM-Generated Code Using 2D Token Probability Maps and Vision Models

no code implementations6 Jan 2025 Zhenyu Xu, Victor S. Sheng

The rise of large language models (LLMs) like ChatGPT has significantly improved automated code generation, enhancing software development efficiency.

Code Generation Computational Efficiency

Logic Error Localization in Student Programming Assignments Using Pseudocode and Graph Neural Networks

no code implementations11 Oct 2024 Zhenyu Xu, Kun Zhang, Victor S. Sheng

Additionally, we have devised a method to efficiently gather logic-error-prone programs during the syntax error correction process and compile these into a dataset that includes single and multiple line logic errors, complete with indices of the erroneous lines.

Diagnostic Graph Neural Network

LecPrompt: A Prompt-based Approach for Logical Error Correction with CodeBERT

no code implementations10 Oct 2024 Zhenyu Xu, Victor S. Sheng

In this paper, we introduce LecPrompt to localize and repair logical errors, an prompt-based approach that harnesses the capabilities of CodeBERT, a transformer-based large language model trained on code.

Language Modeling Language Modelling +2

FreqMark: Frequency-Based Watermark for Sentence-Level Detection of LLM-Generated Text

no code implementations9 Oct 2024 Zhenyu Xu, Kun Zhang, Victor S. Sheng

The increasing use of Large Language Models (LLMs) for generating highly coherent and contextually relevant text introduces new risks, including misuse for unethical purposes such as disinformation or academic dishonesty.

Sentence

Signal Watermark on Large Language Models

1 code implementation9 Oct 2024 Zhenyu Xu, Victor S. Sheng

As Large Language Models (LLMs) become increasingly sophisticated, they raise significant security concerns, including the creation of fake news and academic misuse.

Text Generation

Multi-Task Program Error Repair and Explanatory Diagnosis

no code implementations9 Oct 2024 Zhenyu Xu, Victor S. Sheng

And program error diagnosis can often be too abstract or technical for developers to understand, especially for beginners.

Graph Neural Network Language Modeling +1

Neuromorphic spatiotemporal optical flow: Enabling ultrafast visual perception beyond human capabilities

no code implementations10 Sep 2024 Shengbo Wang, Jingwen Zhao, Tongming Pu, Liangbing Zhao, XIAOYU GUO, Yue Cheng, Cong Li, Weihao Ma, Chenyu Tang, Zhenyu Xu, Ningli Wang, Luigi Occhipinti, Arokia Nathan, Ravinder Dahiya, Huaqiang Wu, Li Tao, Shuo Gao

Optical flow, inspired by the mechanisms of biological visual systems, calculates spatial motion vectors within visual scenes that are necessary for enabling robotics to excel in complex and dynamic working environments.

Optical Flow Estimation

A New Method in Facial Registration in Clinics Based on Structure Light Images

no code implementations23 May 2024 Pengfei Li, Ziyue Ma, Hong Wang, Juan Deng, Yan Wang, Zhenyu Xu, Feng Yan, Wenjun Tu, Hong Sha

To abundant traditional image methods with depth information, a method in registering with depth images and traditional clinical images was investigated.

Face Recognition

A High-Performance, Reconfigurable, Fully Integrated Time-Domain Reflectometry Architecture Using Digital I/Os

no code implementations1 May 2021 Zhenyu Xu, Thomas Mauldin, Zheyi Yao, Gerald Hefferman, Tao Wei

These results demonstrate that a fully reconfigurable and highly integrated TDR (iTDR) can be implemented on a field-programmable gate array (FPGA) chip without using any external circuit components.

PHI-MVS: Plane Hypothesis Inference Multi-view Stereo for Large-Scale Scene Reconstruction

no code implementations13 Apr 2021 Shang Sun, Yunan Zheng, Xuelei Shi, Zhenyu Xu, Yiguang Liu

Besides, a new acceleration scheme similar to dilated convolution can speed up the depth map estimating process with only a slight influence on the reconstruction.

Learning Structral coherence Via Generative Adversarial Network for Single Image Super-Resolution

1 code implementation25 Jan 2021 Yuanzhuo Li, Yunan Zheng, Jie Chen, Zhenyu Xu, Yiguang Liu

Among the major remaining challenges for single image super resolution (SISR) is the capacity to recover coherent images with global shapes and local details conforming to human vision system.

Generative Adversarial Network Image Restoration +1

Gaussian Fusion: Accurate 3D Reconstruction via Geometry-Guided Displacement Interpolation

no code implementations ICCV 2021 Duo Chen, Zixin Tang, Zhenyu Xu, Yunan Zheng, Yiguang Liu

Reconstructing delicate geometric details with consumer RGB-D sensors is challenging due to sensor depth and poses uncertainties.

3D Reconstruction

MARMVS: Matching Ambiguity Reduced Multiple View Stereo for Efficient Large Scale Scene Reconstruction

no code implementations CVPR 2020 Zhenyu Xu, Yiguang Liu, Xuelei Shi, Ying Wang, Yunan Zheng

The ambiguity in image matching is one of main factors decreasing the quality of the 3D model reconstructed by PatchMatch based multiple view stereo.

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