activity
20222026
most citedDeep Generative Imputation Model for Missing Not At Random Data

16 citations · 32 across the 11 of their papers we have counts for

collaborators

11 papers

cs.LG2026

Liquid Gated Attention

Yiheng Jiang, Yuanbo Xu, Yongjian Yang

Real-world time series often exhibit irregular sampling and extended temporal horizons, requiring models to capture continuous-time dynamics across arbitrary intervals without proh…

cs.IR2025★ 10 cited

Unlocking the Power of Diffusion Models in Sequential Recommendation: A Simple and Effective Approach

Jialei Chen, Yuanbo Xu, Yiheng Jiang

In this paper, we focus on the often-overlooked issue of embedding collapse in existing diffusion-based sequential recommendation models and propose ADRec, an innovative framework…

cs.IR2023

DPR: An Algorithm Mitigate Bias Accumulation in Recommendation feedback loops

Hangtong Xu, Yuanbo Xu, Yongjian Yang +2

Recommendation models trained on the user feedback collected from deployed recommendation systems are commonly biased. User feedback is considerably affected by the exposure mechan…

cs.IR2023★ 1 cited

Causal Structure Representation Learning of Confounders in Latent Space for Recommendation

Hangtong Xu, Yuanbo Xu, Chaozhuo Li +1

Inferring user preferences from the historical feedback of users is a valuable problem in recommender systems. Conventional approaches often rely on the assumption that user prefer…

cs.IR2023★ 1 cited

Separating and Learning Latent Confounders to Enhancing User Preferences Modeling

Hangtong Xu, Yuanbo Xu, Yongjian Yang

Recommender models aim to capture user preferences from historical feedback and then predict user-specific feedback on candidate items. However, the presence of various unmeasured…

cs.LG2023★ 16 cited

Deep Generative Imputation Model for Missing Not At Random Data

Jialei Chen, Yuanbo Xu, Pengyang Wang +1

Data analysis usually suffers from the Missing Not At Random (MNAR) problem, where the cause of the value missing is not fully observed. Compared to the naive Missing Completely At…

cs.LG2023★ 1 cited

TriMLP: Revenge of a MLP-like Architecture in Sequential Recommendation

Yiheng Jiang, Yuanbo Xu, Yongjian Yang +3

In this paper, we present a MLP-like architecture for sequential recommendation, namely TriMLP, with a novel Triangular Mixer for cross-token communications. In designing Triangula…

cs.IR2022

Detect Professional Malicious User with Metric Learning in Recommender Systems

Yuanbo Xu, Yongjian Yang, En Wang +2

In e-commerce, online retailers are usually suffering from professional malicious users (PMUs), who utilize negative reviews and low ratings to their consumed products on purpose t…

cs.IR2022★ 2 cited

A Unified Collaborative Representation Learning for Neural-Network based Recommender Systems

Yuanbo Xu, En Wang, Yongjian Yang +1

Most NN-RSs focus on accuracy by building representations from the direct user-item interactions (e.g., user-item rating matrix), while ignoring the underlying relatedness between…

cs.CV2022

Symmetric Transformer-based Network for Unsupervised Image Registration

Mingrui Ma, Lei Song, Yuanbo Xu +1

Medical image registration is a fundamental and critical task in medical image analysis. With the rapid development of deep learning, convolutional neural networks (CNN) have domin…

cs.IR2022★ 1 cited

Generating Self-Serendipity Preference in Recommender Systems for Addressing Cold Start Problems

Yuanbo Xu, Yongjian Yang, En Wang

Classical accuracy-oriented Recommender Systems (RSs) typically face the cold-start problem and the filter-bubble problem when users suffer the familiar, repeated, and even predict…