Search Results for author: Weike Pan

Found 20 papers, 4 papers with code

Augmenting Legal Judgment Prediction with Contrastive Case Relations

1 code implementation COLING 2022 Dugang Liu, Weihao Du, Lei LI, Weike Pan, Zhong Ming

Existing legal judgment prediction methods usually only consider one single case fact description as input, which may not fully utilize the information in the data such as case relations and frequency.

Decoder Prediction

A Survey on Sequential Recommendation

no code implementations17 Dec 2024 Liwei Pan, Weike Pan, Meiyan Wei, Hongzhi Yin, Zhong Ming

Different from most conventional recommendation problems, sequential recommendation focuses on learning users' preferences by exploiting the internal order and dependency among the interacted items, which has received significant attention from both researchers and practitioners.

Sequential Recommendation Survey

Lossless and Privacy-Preserving Graph Convolution Network for Federated Item Recommendation

no code implementations2 Dec 2024 Guowei Wu, Weike Pan, Qiang Yang, Zhong Ming

However, due to privacy constraints, the graph convolution process in existing federated recommendation methods is incomplete compared with the centralized counterpart, causing a degradation of the recommendation performance.

Graph Neural Network

Federated Graph Learning for Cross-Domain Recommendation

no code implementations10 Oct 2024 Ziqi Yang, Zhaopeng Peng, Zihui Wang, Jianzhong Qi, Chaochao Chen, Weike Pan, Chenglu Wen, Cheng Wang, Xiaoliang Fan

This module enhances target domain training by expanding the graph of the target domain to generate reliable domain attentions and fine-tunes the target model for improved negative knowledge filtering and more accurate predictions.

Graph Attention Graph Learning +1

Sample Enrichment via Temporary Operations on Subsequences for Sequential Recommendation

no code implementations25 Jul 2024 Shu Chen, Jinwei Luo, Weike Pan, Jiangxing Yu, Xin Huang, Zhong Ming

Sequential recommendation leverages interaction sequences to predict forthcoming user behaviors, crucial for crafting personalized recommendations.

Sequential Recommendation

Delving into Differentially Private Transformer

no code implementations28 May 2024 Youlong Ding, Xueyang Wu, Yining Meng, Yonggang Luo, Hao Wang, Weike Pan

Deep learning with differential privacy (DP) has garnered significant attention over the past years, leading to the development of numerous methods aimed at enhancing model accuracy and training efficiency.

BMLP: Behavior-aware MLP for Heterogeneous Sequential Recommendation

no code implementations20 Feb 2024 Weixin Li, Yuhao Wu, Yang Liu, Weike Pan, Zhong Ming

In real recommendation scenarios, users often have different types of behaviors, such as clicking and buying.

Sequential Recommendation

Privacy-Preserving Cross-Domain Sequential Recommendation

1 code implementation27 Jan 2024 Zhaohao Lin, Weike Pan, Zhong Ming

It combines the characteristics of sequential recommender systems and cross-domain recommender systems, which can capture the dynamic preferences of users and alleviate the problem of cold-start users.

Privacy Preserving Sequential Recommendation

A Survey on Cross-Domain Sequential Recommendation

1 code implementation10 Jan 2024 Shu Chen, Zitao Xu, Weike Pan, Qiang Yang, Zhong Ming

Cross-domain sequential recommendation (CDSR) shifts the modeling of user preferences from flat to stereoscopic by integrating and learning interaction information from multiple domains at different granularities (ranging from inter-sequence to intra-sequence and from single-domain to cross-domain).

Auxiliary Learning Sequential Recommendation +1

A Survey on Multi-Behavior Sequential Recommendation

no code implementations30 Aug 2023 Xiaoqing Chen, Zhitao Li, Weike Pan, Zhong Ming

MBSR is a relatively new and worthy direction for in-depth research, which can achieve state-of-the-art recommendation through suitable modeling, and some related works have been proposed.

Information Retrieval Retrieval +2

GNN4FR: A Lossless GNN-based Federated Recommendation Framework

no code implementations25 Jul 2023 Guowei Wu, Weike Pan, Zhong Ming

Graph neural networks (GNNs) have gained wide popularity in recommender systems due to their capability to capture higher-order structure information among the nodes of users and items.

Recommendation Systems

DPFormer: Learning Differentially Private Transformer on Long-Tailed Data

no code implementations28 May 2023 Youlong Ding, Xueyang Wu, Hao Wang, Weike Pan

The Transformer has emerged as a versatile and effective architecture with broad applications.

Bounding System-Induced Biases in Recommender Systems with A Randomized Dataset

no code implementations21 Mar 2023 Dugang Liu, Pengxiang Cheng, Zinan Lin, Xiaolian Zhang, Zhenhua Dong, Rui Zhang, Xiuqiang He, Weike Pan, Zhong Ming

To bridge this gap, we study the debiasing problem from a new perspective and propose to directly minimize the upper bound of an ideal objective function, which facilitates a better potential solution to the system-induced biases.

Recommendation Systems

Self-Sampling Training and Evaluation for the Accuracy-Bias Tradeoff in Recommendation

no code implementations7 Feb 2023 Dugang Liu, Yang Qiao, Xing Tang, Liang Chen, Xiuqiang He, Weike Pan, Zhong Ming

Specifically, SSTE uses a self-sampling module to generate some subsets with different degrees of bias from the original training and validation data.

Management

DIWIFT: Discovering Instance-wise Influential Features for Tabular Data

1 code implementation6 Jul 2022 Dugang Liu, Pengxiang Cheng, Hong Zhu, Xing Tang, Yanyu Chen, Xiaoting Wang, Weike Pan, Zhong Ming, Xiuqiang He

Tabular data is one of the most common data storage formats behind many real-world web applications such as retail, banking, and e-commerce.

feature selection

An Efficient Industrial Federated Learning Framework for AIoT: A Face Recognition Application

no code implementations21 Jun 2022 Youlong Ding, Xueyang Wu, Zhitao Li, Zeheng Wu, Shengqi Tan, Qian Xu, Weike Pan, Qiang Yang

Recently, the artificial intelligence of things (AIoT) has been gaining increasing attention, with an intriguing vision of providing highly intelligent services through the network connection of things, leading to an advanced AI-driven ecology.

Face Recognition Federated Learning +1

PAS: A Position-Aware Similarity Measurement for Sequential Recommendation

no code implementations14 May 2022 Zijie Zeng, Jing Lin, Weike Pan, Zhong Ming, Zhongqi Lu

The common item-based collaborative filtering framework becomes a typical recommendation method when equipped with a certain item-to-item similarity measurement.

Collaborative Filtering Position +1

PrivateRec: Differentially Private Training and Serving for Federated News Recommendation

no code implementations18 Apr 2022 Ruixuan Liu, Yanlin Wang, Yang Cao, Lingjuan Lyu, Weike Pan, Yun Chen, Hong Chen

Collecting and training over sensitive personal data raise severe privacy concerns in personalized recommendation systems, and federated learning can potentially alleviate the problem by training models over decentralized user data. However, a theoretically private solution in both the training and serving stages of federated recommendation is essential but still lacking. Furthermore, naively applying differential privacy (DP) to the two stages in federated recommendation would fail to achieve a satisfactory trade-off between privacy and utility due to the high-dimensional characteristics of model gradients and hidden representations. In this work, we propose a federated news recommendation method for achieving a better utility in model training and online serving under a DP guarantee. We first clarify the DP definition over behavior data for each round in the life-circle of federated recommendation systems. Next, we propose a privacy-preserving online serving mechanism under this definition based on the idea of decomposing user embeddings with public basic vectors and perturbing the lower-dimensional combination coefficients.

Federated Learning News Recommendation +2

Collaborative Recommendation with Auxiliary Data: A Transfer Learning View

no code implementations9 Jul 2014 Weike Pan

In this paper, we consider the CRAD problem from a transfer learning view, especially on how to achieve knowledge transfer from some auxiliary data.

Transfer Learning

Accelerated Gradient Methods for Stochastic Optimization and Online Learning

no code implementations NeurIPS 2009 Chonghai Hu, Weike Pan, James T. Kwok

Regularized risk minimization often involves non-smooth optimization, either because of the loss function (e. g., hinge loss) or the regularizer (e. g., $\ell_1$-regularizer).

Stochastic Optimization

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