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20242026
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cs.LG2026

Refinement Provenance Inference: Detecting LLM-Refined Training Prompts from Model Behavior

Bo Yin, Qi Li, Runpeng Yu +1

Instruction tuning increasingly relies on LLM-based prompt refinement, where prompts in the training corpus are selectively rewritten by an external refiner to improve clarity and…

cs.LG2025

Discrete Diffusion in Large Language and Multimodal Models: A Survey

Runpeng Yu, Qi Li, Xinchao Wang

In this work, we provide a systematic survey of Discrete Diffusion Language Models (dLLMs) and Discrete Diffusion Multimodal Language Models (dMLLMs). Unlike autoregressive (AR) mo…

cs.LG2025

Multi-Level Collaboration in Model Merging

Qi Li, Runpeng Yu, Xinchao Wang

Parameter-level model merging is an emerging paradigm in multi-task learning with significant promise. Previous research has explored its connections with prediction-level model en…

cs.LG2025

Through the Dual-Prism: A Spectral Perspective on Graph Data Augmentation for Graph Classification

Yutong Xia, Runpeng Yu, Yuxuan Liang +3

Graph Neural Networks have become the preferred tool to process graph data, with their efficacy being boosted through graph data augmentation techniques. Despite the evolution of a…

cs.LG2024

HG-Adapter: Improving Pre-Trained Heterogeneous Graph Neural Networks with Dual Adapters

Yujie Mo, Runpeng Yu, Xiaofeng Zhu +1

The "pre-train, prompt-tuning'' paradigm has demonstrated impressive performance for tuning pre-trained heterogeneous graph neural networks (HGNNs) by mitigating the gap between pr…

cs.LG2024

KAN or MLP: A Fairer Comparison

Runpeng Yu, Weihao Yu, Xinchao Wang

This paper does not introduce a novel method. Instead, it offers a fairer and more comprehensive comparison of KAN and MLP models across various tasks, including machine learning,…