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Weiyu Chen

9 accepted papers

2026

Latent-to-Data Cascaded Diffusion Models for Unconditional Time Series Generation

ICLR 2026poster

Synthetic time series generation (TSG) is crucial for applications such as privacy preservation, data augmentation, and anomaly detection. A key challenge in TSG lies in modeling the multi-modal distributions of time series, which requires simultaneously capturing diverse high-level representation d…

Cited by 0SourceScholar
2025

Multi-Objective One-Shot Pruning for Large Language Models

NeurIPS 2025poster

Large Language Models (LLMs) have demonstrated remarkable capabilities across various tasks but require substantial computational resources, limiting their deployment in resource-constrained environments. While one-shot pruning methods can reduce model size without expensive retraining, they typical…

Cited by 0SourceScholar
2025

SPMDM: Enhancing Masked Diffusion Models through Simplifing Sampling Path

NeurIPS 2025poster

Autoregressive models (ARMs) show strong capabilities in many domains but face challenges with planning and complex reasoning due to their sequential generation. Masked diffusion models (MDMs) address these issues by enabling controllable, any-order, and parallel generation but encounter training di…

Cited by 0SourceScholar
2025

Safe Delta: Consistently Preserving Safety when Fine-Tuning LLMs on Diverse Datasets

ICML 2025poster

Large language models (LLMs) have shown great potential as general-purpose AI assistants across various domains. To fully leverage this potential in specific applications, many companies provide fine-tuning API services, enabling users to upload their own data for LLM customization. However, fine-tu…

2023

Enhancing Meta Learning via Multi-Objective Soft Improvement Functions

ICLR 2023poster

Meta-learning tries to leverage information from similar learning tasks. In the commonly-used bilevel optimization formulation, the shared parameter is learned in the outer loop by minimizing the average loss over all tasks. However, the converged solution may be comprised in that it only focuses on…

Cited by 7SourcePDFScholar