Search Results for author: Lecheng Zheng

Found 8 papers, 5 papers with code

Multi-modal Causal Structure Learning and Root Cause Analysis

no code implementations4 Feb 2024 Lecheng Zheng, Zhengzhang Chen, Jingrui He, Haifeng Chen

Effective root cause analysis (RCA) is vital for swiftly restoring services, minimizing losses, and ensuring the smooth operation and management of complex systems.

Causal Discovery Contrastive Learning +2

FairGen: Towards Fair Graph Generation

no code implementations30 Mar 2023 Lecheng Zheng, Dawei Zhou, Hanghang Tong, Jiejun Xu, Yada Zhu, Jingrui He

In addition, we propose a generic context sampling strategy for graph generative models, which is proven to be capable of fairly capturing the contextual information of each group with a high probability.

Data Augmentation Fairness +3

Fairness-aware Multi-view Clustering

1 code implementation11 Feb 2023 Lecheng Zheng, Yada Zhu, Jingrui He

We also derive insights regarding the relative performance of the proposed regularizers in various scenarios.

Clustering Contrastive Learning +2

MentorGNN: Deriving Curriculum for Pre-Training GNNs

1 code implementation21 Aug 2022 Dawei Zhou, Lecheng Zheng, Dongqi Fu, Jiawei Han, Jingrui He

To comprehend heterogeneous graph signals at different granularities, we propose a curriculum learning paradigm that automatically re-weighs graph signals in order to ensure a good generalization in the target domain.

Domain Adaptation Graph Mining

Deeper-GXX: Deepening Arbitrary GNNs

no code implementations26 Oct 2021 Lecheng Zheng, Dongqi Fu, Ross Maciejewski, Jingrui He

However, two major problems hinder the deeper GNNs to obtain satisfactory performance, i. e., vanishing gradient and over-smoothing.

Contrastive Learning Link Prediction +2

Heterogeneous Contrastive Learning

1 code implementation19 May 2021 Lecheng Zheng, JinJun Xiong, Yada Zhu, Jingrui He

We first provide a theoretical analysis showing that the vanilla contrastive learning loss easily leads to the sub-optimal solution in the presence of false negative pairs, whereas the proposed weighted loss could automatically adjust the weight based on the similarity of the learned representations to mitigate this issue.

Contrastive Learning

Deep Co-Attention Network for Multi-View Subspace Learning

1 code implementation15 Feb 2021 Lecheng Zheng, Yu Cheng, Hongxia Yang, Nan Cao, Jingrui He

For example, given the diagnostic result that a model provided based on the X-ray images of a patient at different poses, the doctor needs to know why the model made such a prediction.

Deep Multimodality Model for Multi-task Multi-view Learning

1 code implementation25 Jan 2019 Lecheng Zheng, Yu Cheng, Jingrui He

However, there is no existing deep learning algorithm that jointly models task and view dual heterogeneity, particularly for a data set with multiple modalities (text and image mixed data set or text and video mixed data set, etc.).

General Classification Image Classification +1

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