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Pengwei Tang

4 accepted papers

2026

High Probability Bounds for Non-Convex Stochastic Optimization with Momentum

ICLR 2026poster

Stochastic gradient descent with momentum (SGDM) is widely used in machine learning, yet high-probability learning bounds for SGDM in non-convex settings remain scarce. In this paper, we provide high-probability convergence bounds and generalization bounds for SGDM. First, we establish such bounds f…

Cited by 0SourceScholar
2026

Put the Space of LoRA Initialization to the Extreme to Preserve Pre-trained Knowledge

AAAI 2026technical

Low-Rank Adaptation (LoRA) is the leading parameter-efficient fine-tuning method for Large Language Models (LLMs), but it still suffers from catastrophic forgetting. Recent work has shown that specialized LoRA initialization can alleviate catastrophic forgetting. There are currently two approaches t

Cited by 0SourcePDFScholar
2025

ADePT: Adaptive Decomposed Prompt Tuning for Parameter-Efficient Fine-tuning

ICLR 2025poster

Prompt Tuning (PT) enables the adaptation of Pre-trained Large Language Models (PLMs) to downstream tasks by optimizing a small amount of soft virtual tokens, which are prepended to the input token embeddings. Recently, Decomposed Prompt Tuning (DePT) has demonstrated superior adaptation capabilitie…

2023

Fair Scratch Tickets: Finding Fair Sparse Networks Without Weight Training

CVPR 2023poster

Recent studies suggest that computer vision models come at the risk of compromising fairness. There are extensive works to alleviate unfairness in computer vision using pre-processing, in-processing, and post-processing methods. In this paper, we lead a novel fairness-aware learning paradigm for in-…