Search Results for author: Zefan Wang

Found 6 papers, 3 papers with code

Protecting Your LLMs with Information Bottleneck

1 code implementation22 Apr 2024 Zichuan Liu, Zefan Wang, Linjie Xu, Jinyu Wang, Lei Song, Tianchun Wang, Chunlin Chen, Wei Cheng, Jiang Bian

The advent of large language models (LLMs) has revolutionized the field of natural language processing, yet they might be attacked to produce harmful content.

Explaining Time Series via Contrastive and Locally Sparse Perturbations

1 code implementation16 Jan 2024 Zichuan Liu, Yingying Zhang, Tianchun Wang, Zefan Wang, Dongsheng Luo, Mengnan Du, Min Wu, Yi Wang, Chunlin Chen, Lunting Fan, Qingsong Wen

Explaining multivariate time series is a compound challenge, as it requires identifying important locations in the time series and matching complex temporal patterns.

Contrastive Learning counterfactual +1

Multi-factor Sequential Re-ranking with Perception-Aware Diversification

no code implementations21 May 2023 Yue Xu, Hao Chen, Zefan Wang, Jianwen Yin, Qijie Shen, Dimin Wang, Feiran Huang, Lixiang Lai, Tao Zhuang, Junfeng Ge, Xia Hu

Feed recommendation systems, which recommend a sequence of items for users to browse and interact with, have gained significant popularity in practical applications.

Graph Clustering Recommendation Systems +1

GPatch: Patching Graph Neural Networks for Cold-Start Recommendations

no code implementations25 Sep 2022 Hao Chen, Zefan Wang, Yue Xu, Xiao Huang, Feiran Huang

State-of-the-art solutions rely on training hybrid models for both cold-start and existing users/items, based on the auxiliary information.

Recommendation Systems

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