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Imitation learning (IL) is a general learning paradigm for tackling sequential decision-making problems. Interactive imitation learning, where learners can interactively query for expert demonstrations, has been shown to achieve provably…

机器学习 · 计算机科学 2022-09-27 Yichen Li , Chicheng Zhang

The persistent challenge of bias in machine learning models necessitates robust solutions to ensure parity and equal treatment across diverse groups, particularly in classification tasks. Current methods for mitigating bias often result in…

Accurate uncertainty estimates are important in sequential model-based decision-making tasks such as Bayesian optimization. However, these estimates can be imperfect if the data violates assumptions made by the model (e.g., Gaussianity).…

机器学习 · 计算机科学 2024-06-27 Shachi Deshpande , Charles Marx , Volodymyr Kuleshov

Lifelong or continual learning remains to be a challenge for artificial neural network, as it is required to be both stable for preservation of old knowledge and plastic for acquisition of new knowledge. It is common to see previous…

机器学习 · 计算机科学 2020-10-08 Song Zhang , Gehui Shen , Jinsong Huang , Zhi-Hong Deng

Precise breast cancer classification on histopathological images has the potential to greatly improve the diagnosis and patient outcome in oncology. The data imbalance problem largely stems from the inherent imbalance within medical image…

图像与视频处理 · 电气工程与系统科学 2024-11-28 Majid Behzadpour , Bengie L. Ortiz , Ebrahim Azizi , Kai Wu

In this paper, we propose a balancing training method to address problems in imbalanced data learning. To this end, we derive a new loss used in the balancing training phase that alleviates the influence of samples that cause an overfitted…

计算机视觉与模式识别 · 计算机科学 2021-10-14 Seulki Park , Jongin Lim , Younghan Jeon , Jin Young Choi

Adversarial training is an important topic in robust deep learning, but the community lacks attention to its practical usage. In this paper, we aim to resolve a real-world challenge, i.e., training a model on an imbalanced and noisy dataset…

机器学习 · 计算机科学 2023-12-05 Guanlin Li , Kangjie Chen , Yuan Xu , Han Qiu , Tianwei Zhang

Transfer learning has been demonstrated to be successful and essential in diverse applications, which transfers knowledge from related but different source domains to the target domain. Online transfer learning(OTL) is a more challenging…

机器学习 · 计算机科学 2020-02-12 Yuntao Du , Zhiwen Tan , Qian Chen , Yi Zhang , Chongjun Wang

Learning linear predictors with the logistic loss---both in stochastic and online settings---is a fundamental task in machine learning and statistics, with direct connections to classification and boosting. Existing "fast rates" for this…

机器学习 · 计算机科学 2018-12-17 Dylan J. Foster , Satyen Kale , Haipeng Luo , Mehryar Mohri , Karthik Sridharan

Reinforcement learning (RL) provides a principled framework for decision-making in partially observable environments, which can be modeled as Markov decision processes and compactly represented through dynamic decision Bayesian networks.…

Class imbalance distribution widely exists in real-world engineering. However, the mainstream optimization algorithms that seek to minimize error will trap the deep learning model in sub-optimums when facing extreme class imbalance. It…

机器学习 · 计算机科学 2023-02-22 Liang Xie , Yibo Yang , Deng Cai , Xiaofei He

Out-of-distribution (OOD) detection is critical for ensuring the reliability of deep learning systems, particularly in safety-critical applications. Likelihood-based deep generative models have historically faced criticism for their…

Recent years have witnessed significant progress in the development of machine learning models across a wide range of fields, fueled by increased computational resources, large-scale datasets, and the rise of deep learning architectures.…

Continual learning entails learning a sequence of tasks and balancing their knowledge appropriately. With limited access to old training samples, much of the current work in deep neural networks has focused on overcoming catastrophic…

机器学习 · 计算机科学 2023-10-16 Yilin Lyu , Liyuan Wang , Xingxing Zhang , Zicheng Sun , Hang Su , Jun Zhu , Liping Jing

Large language models (LLMs) have shown impressive performance on downstream tasks through in-context learning (ICL), which heavily relies on the demonstrations selected from annotated datasets. However, these datasets often exhibit…

计算与语言 · 计算机科学 2025-06-02 Hongfu Gao , Feipeng Zhang , Hao Zeng , Deyu Meng , Bingyi Jing , Hongxin Wei

A fundamental challenge in physics-informed machine learning (PIML) is the design of robust PIML methods for out-of-distribution (OOD) forecasting tasks. These OOD tasks require learning-to-learn from observations of the same (ODE)…

机器学习 · 计算机科学 2023-03-07 S Chandra Mouli , Muhammad Ashraful Alam , Bruno Ribeiro

Reliable confidence estimation is a challenging yet fundamental requirement in many risk-sensitive applications. However, modern deep neural networks are often overconfident for their incorrect predictions, i.e., misclassified samples from…

计算机视觉与模式识别 · 计算机科学 2024-03-06 Fei Zhu , Xu-Yao Zhang , Zhen Cheng , Cheng-Lin Liu

An important challenge in metric learning is scalability to both size and dimension of input data. Online metric learning algorithms are proposed to address this challenge. Existing methods are commonly based on (Passive Aggressive) PA…

机器学习 · 计算机科学 2020-10-13 Davood Zabihzadeh , Amar Tuama , Ali Karami-Mollaee

Overparameterized models have recently challenged conventional learning theory by exhibiting improved generalization beyond the interpolation limit, a phenomenon known as benign overfitting. This work introduces Adaptive Benign Overfitting…

统计金融 · 定量金融 2026-02-02 Luis Ontaneda Mijares , Nick Firoozye

We study the offline meta-reinforcement learning (OMRL) problem, a paradigm which enables reinforcement learning (RL) algorithms to quickly adapt to unseen tasks without any interactions with the environments, making RL truly practical in…

机器学习 · 计算机科学 2021-05-07 Lanqing Li , Rui Yang , Dijun Luo