Search Results for author: YuJun Li

Found 12 papers, 0 papers with code

Learnable Sequence Augmenter for Triplet Contrastive Learning in Sequential Recommendation

no code implementations26 Mar 2025 Wei Wang, Yujie Lin, Jianli Zhao, Moyan Zhang, Pengjie Ren, Xianye Ben, YuJun Li

Specifically, the self-supervised learning-based augmenter can automatically delete noisy items from sequences and insert new items that better capture item transition patterns, generating a higher-quality augmented sequence.

Contrastive Learning Self-Supervised Learning +2

Edge Contrastive Learning: An Augmentation-Free Graph Contrastive Learning Model

no code implementations15 Dec 2024 YuJun Li, Hongyuan Zhang, Yuan Yuan

To tackle this issue, we propose a model that can efficiently learn edge features for GCL, namely AugmentationFree Edge Contrastive Learning (AFECL) to achieve edgeedge contrast.

Contrastive Learning Link Prediction +1

Dynamics of Adaptive Continuous Attractor Neural Networks

no code implementations9 Oct 2024 YuJun Li, Tianhao Chu, Si Wu

The attractor property empowers a neural system to encode information robustly, but it also incurs the difficulty of rapid update of network states, which can impair information update and search in the brain.

Flat-LoRA: Low-Rank Adaption over a Flat Loss Landscape

no code implementations22 Sep 2024 Tao Li, Zhengbao He, YuJun Li, Yasheng Wang, Lifeng Shang, Xiaolin Huang

Fine-tuning large-scale pre-trained models is prohibitively expensive in terms of computational and memory costs.

Image Classification parameter-efficient fine-tuning

Copyleft for Alleviating AIGC Copyright Dilemma: What-if Analysis, Public Perception and Implications

no code implementations19 Feb 2024 Xinwei Guo, YuJun Li, Yafeng Peng, Xuetao Wei

As AIGC has impacted our society profoundly in the past years, ethical issues have received tremendous attention.

Privacy-Preserving Sequential Recommendation with Collaborative Confusion

no code implementations9 Jan 2024 Wei Wang, Yujie Lin, Pengjie Ren, Zhumin Chen, Tsunenori Mine, Jianli Zhao, Qiang Zhao, Moyan Zhang, Xianye Ben, YuJun Li

Unlike existing research, we capture collaborative signals of neighbor interaction sequences and directly inject indistinguishable items into the target sequence before the recommendation process begins, thereby increasing the perplexity of the target sequence.

Collaborative Filtering Federated Learning +2

Learning to Prove Trigonometric Identities

no code implementations14 Jul 2022 Zhou Liu, YuJun Li, Zhengying Liu, Lin Li, Zhenguo Li

We define the normalized form of trigonometric identities, design a set of rules for the proof and put forward a method which can generate theoretically infinite trigonometric identities.

Automated Theorem Proving Imitation Learning

GraphEye: A Novel Solution for Detecting Vulnerable Functions Based on Graph Attention Network

no code implementations5 Feb 2022 Li Zhou, Minhuan Huang, YuJun Li, Yuanping Nie, Jin Li, Yiwei Liu

GraphEye is originated from the observation that the code property graph of a non-vulnerable function naturally differs from the code property graph of a vulnerable function with the same functionality.

C++ code Graph Attention +1

Finding Second-Order Stationary Points in Nonconvex-Strongly-Concave Minimax Optimization

no code implementations10 Oct 2021 Luo Luo, YuJun Li, Cheng Chen

In this paper, we propose a novel approach for minimax optimization, called Minimax Cubic Newton (MCN), which could find an $\big(\varepsilon,\kappa^{1. 5}\sqrt{\rho\varepsilon}\,\big)$-second-order stationary point of $P({\bf x})$ with calling ${\mathcal O}\big(\kappa^{1. 5}\sqrt{\rho}\varepsilon^{-1. 5}\big)$ times of second-order oracles and $\tilde{\mathcal O}\big(\kappa^{2}\sqrt{\rho}\varepsilon^{-1. 5}\big)$ times of first-order oracles, where $\kappa$ is the condition number and $\rho$ is the Lipschitz continuous constant for the Hessian of $f({\bf x},{\bf y})$.

Optimal Designs of Gaussian Processes with Budgets for Hyperparameter Optimization

no code implementations1 Jan 2021 Yimin Huang, YuJun Li, Zhenguo Li, Zhihua Zhang

Moreover, comparisons between different initial designs with the same model show the advantage of the proposed optimal design.

Gaussian Processes Hyperparameter Optimization

Accelerated Value Iteration via Anderson Mixing

no code implementations27 Sep 2018 YuJun Li, Chengzhuo Ni, Guangzeng Xie, Wenhao Yang, Shuchang Zhou, Zhihua Zhang

A2VI is more efficient than the modified policy iteration, which is a classical approximate method for policy evaluation.

Atari Games Q-Learning +2

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