1 code implementation • 3 Oct 2024 • ZhiYu Zhang, Zhou Lu, Heng Yang
By converting the target confidence levels into quantile levels, the problem can be reduced to predicting the quantiles (in hindsight) of a sequentially revealed data sequence.
no code implementations • 14 Sep 2024 • ZhiYu Zhang, Da Liu, Shengqiang Liu, Anna Wang, Jie Gao, YaLi Li
Contrastive learning has become one of the most impressive approaches for multi-modal representation learning.
no code implementations • 3 Jun 2024 • Kevin Kasa, ZhiYu Zhang, Heng Yang, Graham W. Taylor
Conformal prediction (CP) enables machine learning models to output prediction sets with guaranteed coverage rate, assuming exchangeable data.
no code implementations • 26 May 2024 • Aneesh Muppidi, ZhiYu Zhang, Heng Yang
A key challenge in lifelong reinforcement learning (RL) is the loss of plasticity, where previous learning progress hinders an agent's adaptation to new tasks.
1 code implementation • 16 Apr 2024 • ZhiYu Zhang, Chenkaixiang Lu, Wenchong Tian, Zhenliang Liao, Zhiguo Yuan
As the model structure adheres to the flow routing mechanisms and hydraulic constraints in urban drainage networks, it provides an interpretable and effective solution for data-driven surrogate modelling.
1 code implementation • 5 Feb 2024 • ZhiYu Zhang, David Bombara, Heng Yang
We study online learning in adversarial nonstationary environments.
no code implementations • 2 Feb 2024 • ZhiYu Zhang, Guo Lu, Huanxiong Liang, Anni Tang, Qiang Hu, Li Song
Volumetric videos, benefiting from immersive 3D realism and interactivity, hold vast potential for various applications, while the tremendous data volume poses significant challenges for compression.
no code implementations • 2 Feb 2024 • Kwangjun Ahn, ZhiYu Zhang, Yunbum Kook, Yan Dai
In this work, we provide a different perspective based on online learning that underscores the importance of Adam's algorithmic components.
no code implementations • 27 Sep 2023 • ZhiYu Zhang, Heng Yang, Ashok Cutkosky, Ioannis Ch. Paschalidis
Motivated by the pursuit of instance optimality, we propose a new algorithm that simultaneously achieves ($i$) the AdaGrad-style second order gradient adaptivity; and ($ii$) the comparator norm adaptivity also known as "parameter freeness" in the literature.
1 code implementation • 13 May 2022 • ZhiYu Zhang, Ashok Cutkosky, Ioannis Ch. Paschalidis
Practical online learning tasks are often naturally defined on unconstrained domains, where optimal algorithms for general convex losses are characterized by the notion of comparator adaptivity.
no code implementations • 21 Apr 2022 • Anni Tang, Yan Huang, Jun Ling, ZhiYu Zhang, Yiwei Zhang, Rong Xie, Li Song
As the latest video coding standard, versatile video coding (VVC) has shown its ability in retaining pixel quality.
1 code implementation • 19 Jan 2022 • ZhiYu Zhang, Ashok Cutkosky, Ioannis Paschalidis
Unconstrained Online Linear Optimization (OLO) is a practical problem setting to study the training of machine learning models.
no code implementations • ACL 2021 • Li Huang, Junjie Li, Weiwei Jiang, ZhiYu Zhang, Minchuan Chen, Shaojun Wang, Jing Xiao
Chinese Spelling Check (CSC) is a challenging task due to the complex characteristics of Chinese characters.
Ranked #1 on Chinese Spell Checking on SIGHAN 2015
no code implementations • 2 Feb 2021 • ZhiYu Zhang, Ashok Cutkosky, Ioannis Ch. Paschalidis
Next, considering a related problem called online learning with memory, we construct a novel strongly adaptive algorithm that uses our first contribution as a building block.
1 code implementation • 7 Oct 2020 • ZhiYu Zhang, Ioannis Paschalidis
Due to recent empirical successes, the options framework for hierarchical reinforcement learning is gaining increasing popularity.
no code implementations • 23 Nov 2017 • Wentao Ma, Dongqiao Zheng, Yuanhao Li, ZhiYu Zhang, Badong Chen
This paper proposed a bias-compensated normalized maximum correntropy criterion (BCNMCC) algorithm charactered by its low steady-state misalignment for system identification with noisy input in an impulsive output noise environment.