Weijie Niu

dblp:387/4098 · DBLP profile ↗
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3ranked-venue papers in the field
2as first author
3since 2021 · last 2025
0009-0008-9265-391XORCID · corroborated

Domains — venue-derived; a paper can count in several

Big Data, Cloud & Distributed Data Systems · 3 (2 first)
YearPublicationVenuePosition
2025 ColNet: Collaborative Optimization in Decentralized Federated Multi-Task Learning Systems
Chao Feng 0001, Nicolas Fazli Kohler, Weijie Niu, Alberto Huertas Celdrán, Gérôme Bovet, Burkhard Stiller
IEEE Big Data4
2025 DPT-DDPM: A Denoising Diffusion Probabilistic Model for Tabular Data With Differential Privacy Enhancement
Weijie Niu, Shiyu Ran, Alberto Huertas Celdrán, Burkhard Stiller
IEEE Big Data1
2024 Enhancing Synthetic Data Generation for Class Imbalance and Privacy Preservation
abstract
Synthetic data generation has emerged as a powerful solution to meet the demand for high-quality, diverse, and privacy-preserving data in many domains. Still, there is an open challenge when dealing with class imbalance and privacy preservation in synthetic tabular data generation. Thus, this study introduces two algorithms: balanced Tabular Generative Adversarial Network (b-TGAN) and balanced Tabular Principle Component Analysis (b-TPCA). While b-TGAN proactively tackles class imbalance by incorporating a re-balancing mechanism and leveraging an Autoencoder, b-TPCA offers a privacy-preserving solution by generating synthetic data using statistical properties. Through experiments on five datasets, this study demonstrates the effectiveness of b-TGAN in generating balanced data, particularly in improving the performance on minority classes. b-TPCA also shows promising results, achieving comparable ML utility to the baseline method while enhancing privacy preservation.
Weijie Niu, Alberto Huertas Celdrán, Burkhard Stiller
IEEE Big Data1