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Zongwei Wang

5 accepted papers

2026

Do Less, Achieve More: Do We Need Every-Step Optimization for RL Fine-tuning of Diffusion Models?

CVPR 2026

Diffusion models have achieved outstanding success in image generation, yet their objectives are often limited to reconstruction, making it difficult to align with human preferences directly. Reinforcement learning (RL) offers a promising approach to address this by optimizing models using explicit

Cited by 0SourceScholar
2026

Reexamining the Exploration–Exploitation Dilemma from an Entropy-Driven Perspective

IJCAI 2026

Achieving an optimal balance between exploration and exploitation remains a fundamental challenge in reinforcement learning. This work revisits the exploration-exploitation dilemma through the lens of entropy, offering a novel perspective on this enduring problem. It establishes a theoretical connec

Cited by 0Scholar
2025

FreqLLM: Frequency-Aware Large Language Models for Time Series Forecasting

IJCAI 2025

Large Language Models (LLMs) have recently shown promise in Time Series Forecasting (TSF) by effectively capturing intricate time-domain dependencies. However, our preliminary experiments reveal that standard LLM-based approaches often fail to capture global correlations, limiting predictive perform

2024

Ranking Enhanced Fine-Grained Contrastive Learning for Recommendation

ICASSP 2024accepted

Contrastive learning (CL) has been widely used to improve recommendation performance, since its self-supervised signals can effectively alleviate the data sparsity issue in recommender systems. Nevertheless, most existing CL-based recommendation models construct negative sample pairs following the c…

Cited by 0SourceScholar
2018

Face Aging With Identity-Preserved Conditional Generative Adversarial Networks

CVPR 2018poster

Face aging is of great importance for cross-age recognition and entertainment related applications. However, the lack of labeled faces of the same person across a long age range makes it challenging. Because of different aging speed of different persons, our face aging approach aims at synthesizing…

Cited by 287SourcePDFScholar