Peng Cheng Laboratory

MCGMark: An Encodable and Robust Online Watermark for Tracing LLM-Generated Malicious Code

With the advent of large language models (LLMs), numerous software service providers are developing LLMs tailored for code generation, such as CodeLlama. However, these models can be exploited by malicious developers to generate malicious code, posing severe threats to the softwa...

LLM See, LLM Do: Enhancing Repository-Aware Code Generation in LLMs Through Logical Context and Usage Knowledge

Large language models (LLMs) have significantly advanced automatic code generation. Although they have demonstrated remarkable ability in writing standalone code, they still struggle with real-world repository-level coding tasks due to the lack of repository-specific knowledge. E...

LMCAN: A Lightweight Multiscale Contextual Attention Network for Hyperspectral and Multispectral Image Fusion

Hyperspectral and multispectral image fusion requires enhancing spatial details while preserving the pixel-wise spectral fidelity of hyperspectral observations. Transformer-based approaches provide effective contextual modeling, yet hierarchical token merging may cause spectral m...

Low-Light Micro-Vibration Sensing on Satellite Platforms via Physical Encoding Self-Supervised Learning

Micro-vibrations of satellite platforms can reduce the pointing accuracy of space optical communication links, leading to a reduction in link margin and even link interruption. Traditional methods rely on accelerometers to obtain vibration labels, leading to hardware deployment d...

Recent Advances in 3D Object and Scene Generation: A Survey

In recent years, the demand for 3D content has grown exponentially with the intelligent upgrade of interactive media, extended reality (XR), and Metaverse industries. In order to overcome the limitations of traditional manual modeling approaches, such as labor-intensive workflows...

EquivSage: LLM-assisted Detection of EVM-Inequivalent Code Smells in Multi-chain Reuse Contracts

With the increasing development of Solidity contracts on Ethereum , more developers are reusing them on other compatible blockchains. However, developers may overlook the differences between the designs of the blockchain system, such as the Gas Mechanism and Consensus Protocol ,...

Emergence of novel SARS-CoV-2 variants keeps slowing down

Abstract Background Although COVID-19 pandemic has no longer been classified as an international public health emergency of concern after May 2023, multiple variants with different characteristics keep emerging. Given the complex spatial-temporal characteristics of epidemics, res...

Reading Confucian Ethics on the Façade: A Semiotic-Coding Framework for Guangfu Ancestral Halls Demonstrated on the Chen Clan Ancestral Hall

Confucian ethics are widely credited with shaping Guangfu ancestral halls, yet existing scholarship approaches their façades from two disconnected ends: macro-cultural studies treat the façade as an undifferentiated emblem of lineage order, while craft studies document individual...

Encountered-Type 3D Haptic Shape Display by Simulating Finger–Object Contact Regions

Encountered-type pin-array shape displays allow users to freely explore a simulated shape using bare fingers. However, current pin-array shape displays are limited to discontinuous shapes or 2.5D shapes. Here, we propose a novel shape display principle to render touch feedback be...

High‐Performance Laser Engine Enabling Synchronous Chirp Linearization for Wavelength‐Resolved FMCW Photonic Systems

ABSTRACT Integrated frequency‐modulated continuous‐wave (FMCW) photonic devices provide a promising route toward compact, fully solid‐state LiDAR systems. By incorporating passive dispersive structures, wavelength‐resolved FMCW architectures further exploit wavelength as an addit...