Search Results for author: Yijiang Pang

Found 6 papers, 0 papers with code

Distributed Harmonization: Federated Clustered Batch Effect Adjustment and Generalization

no code implementations23 May 2024 Bao Hoang, Yijiang Pang, Siqi Liang, Liang Zhan, Paul Thompson, Jiayu Zhou

In the medical domain, collecting data from multiple sites or institutions is a common strategy that guarantees sufficient clinical diversity, determined by the decentralized nature of medical data.

Towards Stability of Parameter-free Optimization

no code implementations7 May 2024 Yijiang Pang, Shuyang Yu, Bao Hoang, Jiayu Zhou

To tackle this challenge, in this paper, we propose a novel parameter-free optimizer, \textsc{AdamG} (Adam with the golden step size), designed to automatically adapt to diverse optimization problems without manual tuning.

Stochastic Two Points Method for Deep Model Zeroth-order Optimization

no code implementations2 Feb 2024 Yijiang Pang, Jiayu Zhou

Building or fully fine-tuning such large models is usually prohibitive due to either hardware budget or lack of access to backpropagation.

Cross-modality debiasing: using language to mitigate sub-population shifts in imaging

no code implementations2 Feb 2024 Yijiang Pang, Bao Hoang, Jiayu Zhou

Specifically, in the context of the distributional robustness of CLIP, we propose to leverage natural language inputs to debias the image feature representations, to improve worst-case performance on sub-populations.

Language Modelling

RUSH: Robust Contrastive Learning via Randomized Smoothing

no code implementations11 Jul 2022 Yijiang Pang, Boyang Liu, Jiayu Zhou

In this paper, we show a surprising fact that contrastive pre-training has an interesting yet implicit connection with robustness, and such natural robustness in the pre trained representation enables us to design a powerful robust algorithm against adversarial attacks, RUSH, that combines the standard contrastive pre-training and randomized smoothing.

Adversarial Robustness Contrastive Learning

Proficiency Constrained Multi-Agent Reinforcement Learning for Environment-Adaptive Multi UAV-UGV Teaming

no code implementations10 Feb 2020 Qifei Yu, Zhexin Shen, Yijiang Pang, Rui Liu

Due to heterogeneous robots inside a team and the resilient capabilities of robots, it is challenging to perform a task with an optimal balance between reasonable task allocations and maximum utilization of robot capability.

Multi-agent Reinforcement Learning reinforcement-learning +1

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