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Zhenghua Wang

6 accepted papers

2026

Explainable Synthetic Image Detection Through Diffusion Timestep Ensembling

AAAI 2026technical

Recent advances in diffusion models have enabled the creation of deceptively real images, posing significant security risks when misused. In this study, we empirically show that different timesteps of DDIM inversion reveal varying subtle distinctions between synthetic and real images that are extrac

Cited by 0SourcePDFScholar
2025

Dendritic Localized Learning: Toward Biologically Plausible Algorithm

ICML 2025poster

Backpropagation is the foundational algorithm for training neural networks and a key driver of deep learning's success. However, its biological plausibility has been challenged due to three primary limitations: weight symmetry, reliance on global error signals, and the dual-phase nature of training,…

2025

Enhancing Model Privacy in Federated Learning with Random Masking and Quantization

EMNLP 2025

The primary goal of traditional federated learning is to protect data privacy by enabling distributed edge devices to collaboratively train a shared global model while keeping raw data decentralized at local clients. The rise of large language models (LLMs) has introduced new challenges in distribut

2025

Revisiting Jailbreaking for Large Language Models: A Representation Engineering Perspective

COLING 2025main

The recent surge in jailbreaking attacks has revealed significant vulnerabilities in Large Language Models (LLMs) when exposed to malicious inputs. While various defense strategies have been proposed to mitigate these threats, there has been limited research into the underlying mechanisms that make…

Cited by 5SourcePDFScholar
2025

UPLex: Fine-Grained Personality Control in Large Language Models via Unsupervised Lexical Modulation

EMNLP 2025

Personality is a crucial factor that shapes human communication patterns, thereby regulating the personalities of large language models (LLMs) holds significant potential in enhancing their user experiences. Previous approaches either relied on fine-tuning LLMs on specific corpora or required manual

Cited by 0SourcePDFScholar
2024

Searching for Best Practices in Retrieval-Augmented Generation

EMNLP 2024main

Retrieval-augmented generation (RAG) techniques have proven to be effective in integrating up-to-date information, mitigating hallucinations, and enhancing response quality, particularly in specialized domains. While many RAG approaches have been proposed to enhance large language models through que…