Ruiyi Fang (方睿怡)

Hello! This is Ruiyi (Raelyn)! I am a first-year doctor student at Yamakawa Lab in UTokyo, advised by Prof. Yawakama.

Before coming to UTokyo, I was a master with a focus on the industrial applications of transfer learning with few samples in Central South University, advised by Prof. Kai Wang. I received B.E. from Chang'an University.

My research interests lie in AI for robotics, embodied AI, deep learning, transfer learning, and imitation learning. Most of my research focus on the applications of deep learning, particularly in the few-sample scenarios.

Please feel free to contact me with email.

 ~  Email  /  CV  /  Github /  Google Scholar ~ 

News

Oct'25

Oct'25

Research

In this study, we introduce a dynamic domain adversarial network (DDAN) for dynamic few-sample fault detection in industry. To tackle the dynamic characteristic in industrial data, a special multi-step difference module incorporating the self-attention mechanism is designed. Moreover, considering the few-sample problem (or cold-start problem), the DDAN is trained in an adversarial framework to transfer the domain-invariant features.

In this work, we introduce an adversarial-based unsupervised network for fault detection in few-sample scenarios. Due to the significant disparity in data quantity between the target domain and the source domain, the adversarial training process inevitably encounters an imbalance problem. To address this issue, we propose a domain imbalance aware margin (DIAM) loss to rebalance the domain margin between the two domains.

We propose a method called WDAA, which utilizes an adversarial framework to transfer knowledge from a data-rich source domain to a data-poor target domain. To further enhance the domain adaptation performance, we develop a Wasserstein adaptor. The model was validated using data from an industrial process, the Continuous Stirred-Tank Reactor (CSTR).

Education

Awards:

• Outstanding Graduate | 2025
• National Scholarship | 2024
• Post-graduate First-Class Scholarship | 2022 & 2023 & 2024

Awards:

• Academic Excellence Scholarship | 2018 & 2021
• Course Excellence Scholarship | 2018 & 2019 & 2020

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