Search Results for author: Chaoqun Yang

Found 8 papers, 2 papers with code

Robust Federated Contrastive Recommender System against Model Poisoning Attack

no code implementations29 Mar 2024 Wei Yuan, Chaoqun Yang, Liang Qu, Guanhua Ye, Quoc Viet Hung Nguyen, Hongzhi Yin

In this paper, we introduce a novel contrastive learning framework designed to fully leverage the client's sparse data through embedding augmentation, referred to as CL4FedRec.

Contrastive Learning Model Poisoning +2

Augmented Labeled Random Finite Sets and Its Application to Group Target Tracking

no code implementations20 Mar 2024 Chaoqun Yang, Mengdie Xu, Xiaowei Liang, Zhiguo Shi, Heng Zhang, Xianghui Cao

Furthermore, by means of the labeled multi-Bernoulli (LMB) filter with the proposed augmented LRFSs, the group structure is iteratively propagated and updated during the tracking process, which achieves the simultaneously estimation of the kinetic states, track label, and the corresponding group information of multiple group targets, and further improves the GTT tracking performance.

Hide Your Model: A Parameter Transmission-free Federated Recommender System

1 code implementation25 Nov 2023 Wei Yuan, Chaoqun Yang, Liang Qu, Quoc Viet Hung Nguyen, JianXin Li, Hongzhi Yin

Existing FedRecs generally adhere to a learning protocol in which a central server shares a global recommendation model with clients, and participants achieve collaborative learning by frequently communicating the model's public parameters.

Privacy Preserving Recommendation Systems

Motif-Based Prompt Learning for Universal Cross-Domain Recommendation

no code implementations20 Oct 2023 Bowen Hao, Chaoqun Yang, Lei Guo, Junliang Yu, Hongzhi Yin

By unifying pre-training and recommendation tasks as a common motif-based similarity learning task and integrating adaptable prompt parameters to guide the model in downstream recommendation tasks, MOP excels in transferring domain knowledge effectively.

General Knowledge Multi-Task Learning

Manipulating Visually-aware Federated Recommender Systems and Its Countermeasures

no code implementations14 May 2023 Wei Yuan, Shilong Yuan, Chaoqun Yang, Quoc Viet Hung Nguyen, Hongzhi Yin

Therefore, when incorporating visual information in FedRecs, all existing model poisoning attacks' effectiveness becomes questionable.

Collaborative Filtering Model Poisoning +2

Joint Semantic and Structural Representation Learning for Enhancing User Preference Modelling

no code implementations24 Apr 2023 Xuhui Ren, Wei Yuan, Tong Chen, Chaoqun Yang, Quoc Viet Hung Nguyen, Hongzhi Yin

Knowledge graphs (KGs) have become important auxiliary information for helping recommender systems obtain a good understanding of user preferences.

Knowledge Graphs Language Modelling +2

Interaction-level Membership Inference Attack Against Federated Recommender Systems

no code implementations26 Jan 2023 Wei Yuan, Chaoqun Yang, Quoc Viet Hung Nguyen, Lizhen Cui, Tieke He, Hongzhi Yin

An interaction-level membership inference attacker is first designed, and then the classical privacy protection mechanism, Local Differential Privacy (LDP), is adopted to defend against the membership inference attack.

Attribute Federated Learning +3

Efficient On-Device Session-Based Recommendation

1 code implementation27 Sep 2022 Xin Xia, Junliang Yu, Qinyong Wang, Chaoqun Yang, Quoc Viet Hung Nguyen, Hongzhi Yin

Specifically, each item is represented by a compositional code that consists of several codewords, and we learn embedding vectors to represent each codeword instead of each item.

Knowledge Distillation Model Compression +1

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