Search Results for author: Zheyuan Liu

Found 17 papers, 9 papers with code

Graph Learning for Parameter Prediction of Quantum Approximate Optimization Algorithm

no code implementations5 Mar 2024 Zhiding Liang, Gang Liu, Zheyuan Liu, Jinglei Cheng, Tianyi Hao, Kecheng Liu, Hang Ren, Zhixin Song, Ji Liu, Fanny Ye, Yiyu Shi

In recent years, quantum computing has emerged as a transformative force in the field of combinatorial optimization, offering novel approaches to tackling complex problems that have long challenged classical computational methods.

Combinatorial Optimization Graph Learning +1

Can we Soft Prompt LLMs for Graph Learning Tasks?

no code implementations15 Feb 2024 Zheyuan Liu, Xiaoxin He, Yijun Tian, Nitesh V. Chawla

Graph plays an important role in representing complex relationships in real-world applications such as social networks, biological data and citation networks.

Graph Learning Link Prediction +1

Towards Safer Large Language Models through Machine Unlearning

no code implementations15 Feb 2024 Zheyuan Liu, Guangyao Dou, Zhaoxuan Tan, Yijun Tian, Meng Jiang

To address this gap, we introduce Selective Knowledge negation Unlearning (SKU), a novel unlearning framework for LLMs, designed to eliminate harmful knowledge while preserving utility on normal prompts.

Machine Unlearning Negation

UGMAE: A Unified Framework for Graph Masked Autoencoders

no code implementations12 Feb 2024 Yijun Tian, Chuxu Zhang, Ziyi Kou, Zheyuan Liu, Xiangliang Zhang, Nitesh V. Chawla

In light of this, we propose UGMAE, a unified framework for graph masked autoencoders to address these issues from the perspectives of adaptivity, integrity, complementarity, and consistency.

Self-Supervised Learning

Democratizing Large Language Models via Personalized Parameter-Efficient Fine-tuning

no code implementations6 Feb 2024 Zhaoxuan Tan, Qingkai Zeng, Yijun Tian, Zheyuan Liu, Bing Yin, Meng Jiang

OPPU integrates parametric user knowledge in the personal PEFT parameters with the non-parametric knowledge acquired through retrieval and profile.

Retrieval

Breaking the Trilemma of Privacy, Utility, Efficiency via Controllable Machine Unlearning

1 code implementation28 Oct 2023 Zheyuan Liu, Guangyao Dou, Yijun Tian, Chunhui Zhang, Eli Chien, Ziwei Zhu

Exploring the full spectrum of trade-offs between privacy, model utility, and runtime efficiency is critical for practical unlearning scenarios.

Machine Unlearning

A Generalized Physical-knowledge-guided Dynamic Model for Underwater Image Enhancement

1 code implementation10 Aug 2023 Pan Mu, Hanning Xu, Zheyuan Liu, Zheng Wang, Sixian Chan, Cong Bai

To tackle these challenges, we design a Generalized Underwater image enhancement method via a Physical-knowledge-guided Dynamic Model (short for GUPDM), consisting of three parts: Atmosphere-based Dynamic Structure (ADS), Transmission-guided Dynamic Structure (TDS), and Prior-based Multi-scale Structure (PMS).

Image Enhancement

Histogram-guided Video Colorization Structure with Spatial-Temporal Connection

no code implementations9 Aug 2023 Zheyuan Liu, Pan Mu, Hanning Xu, Cong Bai

Video colorization, aiming at obtaining colorful and plausible results from grayish frames, has aroused a lot of interest recently.

Colorization

All-pairs Consistency Learning for Weakly Supervised Semantic Segmentation

1 code implementation8 Aug 2023 Weixuan Sun, Yanhao Zhang, Zhen Qin, Zheyuan Liu, Lin Cheng, Fanyi Wang, Yiran Zhong, Nick Barnes

Given a pair of augmented views, our approach regularizes the activation intensities between a pair of augmented views, while also ensuring that the affinity across regions within each view remains consistent.

Object Localization Weakly supervised Semantic Segmentation +1

Candidate Set Re-ranking for Composed Image Retrieval with Dual Multi-modal Encoder

2 code implementations25 May 2023 Zheyuan Liu, Weixuan Sun, Damien Teney, Stephen Gould

An alternative approach is to allow interactions between the query and every possible candidate, i. e., reference-text-candidate triplets, and pick the best from the entire set.

Composed Image Retrieval (CoIR) Re-Ranking +1

Bi-directional Training for Composed Image Retrieval via Text Prompt Learning

1 code implementation29 Mar 2023 Zheyuan Liu, Weixuan Sun, Yicong Hong, Damien Teney, Stephen Gould

Composed image retrieval searches for a target image based on a multi-modal user query comprised of a reference image and modification text describing the desired changes.

Composed Image Retrieval (CoIR) Retrieval

Learning Audio-Visual Source Localization via False Negative Aware Contrastive Learning

1 code implementation CVPR 2023 Weixuan Sun, Jiayi Zhang, Jianyuan Wang, Zheyuan Liu, Yiran Zhong, Tianpeng Feng, Yandong Guo, Yanhao Zhang, Nick Barnes

Based on this observation, we propose a new learning strategy named False Negative Aware Contrastive (FNAC) to mitigate the problem of misleading the training with such false negative samples.

Contrastive Learning

Image Retrieval on Real-life Images with Pre-trained Vision-and-Language Models

3 code implementations ICCV 2021 Zheyuan Liu, Cristian Rodriguez-Opazo, Damien Teney, Stephen Gould

We demonstrate that with a relatively simple architecture, CIRPLANT outperforms existing methods on open-domain images, while matching state-of-the-art accuracy on the existing narrow datasets, such as fashion.

Composed Image Retrieval (CoIR) Retrieval +1

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