Search Results for author: Xuan Ma

Found 4 papers, 0 papers with code

Robust bilinear factor analysis based on the matrix-variate $t$ distribution

no code implementations4 Jan 2024 Xuan Ma, Jianhua Zhao, Changchun Shang, Fen Jiang, Philip L. H. Yu

This introduces two challenges for $t$fa: (i) the inherent matrix structure of the data is broken, and (ii) robustness may be lost, as vectorized matrix data typically results in a high data dimension, which could easily lead to the breakdown of $t$fa.

Robust factored principal component analysis for matrix-valued outlier accommodation and detection

no code implementations13 Dec 2021 Xuan Ma, Jianhua Zhao, Yue Wang

To solve the robustness problem suffered by FPCA and make it applicable to matrix data, in this paper we propose a robust extension of FPCA (RFPCA), which is built upon a $t$-type distribution called matrix-variate $t$ distribution.

Dimensionality Reduction Outlier Detection

Intent Disentanglement and Feature Self-supervision for Novel Recommendation

no code implementations28 Jun 2021 Tieyun Qian, Yile Liang, Qing Li, Xuan Ma, Ke Sun, Zhiyong Peng

Improving the recommendation of tail items can promote novelty and bring positive effects to both users and providers, and thus is a desirable property of recommender systems.

Disentanglement Recommendation Systems +1

Health Status Prediction with Local-Global Heterogeneous Behavior Graph

no code implementations23 Mar 2021 Xuan Ma, Xiaoshan Yang, Junyu Gao, Changsheng Xu

However, these data streams are multi-source and heterogeneous, containing complex temporal structures with local contextual and global temporal aspects, which makes the feature learning and data joint utilization challenging.

Management

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