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Real-world data typically follow a long-tailed distribution, where a few majority categories occupy most of the data while most minority categories contain a limited number of samples. Classification models minimizing cross-entropy struggle…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Jianggang Zhu , Zheng Wang , Jingjing Chen , Yi-Ping Phoebe Chen , Yu-Gang Jiang

When using machine learning for imbalanced binary classification problems, it is common to subsample the majority class to create a (more) balanced training dataset. This biases the model's predictions because the model learns from data…

机器学习 · 计算机科学 2025-11-03 Nathan Phelps , Daniel J. Lizotte , Douglas G. Woolford

The class imbalance problem can cause machine learning models to produce an undesirable performance on the minority class as well as the whole dataset. Using data augmentation techniques to increase the number of samples is one way to…

计算与语言 · 计算机科学 2023-06-02 Akbar Karimi , Lucie Flek

Classification predictive modeling involves the accurate assignment of observations in a dataset to target classes or categories. There is an increasing growth of real-world classification problems with severely imbalanced class…

机器学习 · 统计学 2022-01-03 Banghee So , Emiliano A. Valdez

In this paper we present a world model, which learns causal features using the invariance principle. In particular, we use contrastive unsupervised learning to learn the invariant causal features, which enforces invariance across…

机器学习 · 计算机科学 2022-09-30 Rudra P. K. Poudel , Harit Pandya , Roberto Cipolla

Deep learning enables impressive performance in image recognition using large-scale artificially-balanced datasets. However, real-world datasets exhibit highly class-imbalanced distributions, yielding two main challenges: relative imbalance…

计算机视觉与模式识别 · 计算机科学 2020-10-20 Saurabh Sharma , Ning Yu , Mario Fritz , Bernt Schiele

Learning behavioral patterns from observational data has been a de-facto approach to motion forecasting. Yet, the current paradigm suffers from two shortcomings: brittle under distribution shifts and inefficient for knowledge transfer. In…

机器学习 · 计算机科学 2022-04-06 Yuejiang Liu , Riccardo Cadei , Jonas Schweizer , Sherwin Bahmani , Alexandre Alahi

In this paper, we present an empirical study on image recognition fairness, i.e., extreme class accuracy disparity on balanced data like ImageNet. We experimentally demonstrate that classes are not equal and the fairness issue is prevalent…

机器学习 · 计算机科学 2024-03-14 Jiequan Cui , Beier Zhu , Xin Wen , Xiaojuan Qi , Bei Yu , Hanwang Zhang

Causal representation learning has attracted significant research interest during the past few years, as a means for improving model generalization and robustness. Causal representations of interventional image pairs (also called…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Panagiotis Alimisis , Christos Diou

Model learning from class imbalanced training data is a long-standing and significant challenge for machine learning. In particular, existing deep learning methods consider mostly either class balanced data or moderately imbalanced data in…

计算机视觉与模式识别 · 计算机科学 2018-05-01 Qi Dong , Shaogang Gong , Xiatian Zhu

This study proposes a method for imbalanced data classification based on deep probabilistic graphical models (DPGMs) to solve the problem that traditional methods have insufficient learning ability for minority class samples. To address the…

机器学习 · 计算机科学 2025-04-09 Yujia Lou , Jie Liu , Yuan Sheng , Jiawei Wang , Yiwei Zhang , Yaokun Ren

Data collected from the real world typically exhibit long-tailed distributions, where frequent classes contain abundant data while rare ones have only a limited number of samples. While existing supervised learning approaches have been…

计算机视觉与模式识别 · 计算机科学 2023-09-18 Ci-Siang Lin , Min-Hung Chen , Yu-Chiang Frank Wang

Transductive graph-based semi-supervised learning methods usually build an undirected graph utilizing both labeled and unlabeled samples as vertices. Those methods propagate label information of labeled samples to neighbors through their…

机器学习 · 计算机科学 2013-12-25 Fengqi Li , Chuang Yu , Nanhai Yang , Feng Xia , Guangming Li , Fatemeh Kaveh-Yazdy

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

For several years till date, the major issues in terms of solving for classification problems are the issues of Imbalanced data. Because majority of the machine learning algorithms by default assumes all data are balanced, the algorithms do…

机器学习 · 统计学 2020-10-12 Richmond Addo Danquah

We study optimal covariate balance for causal inferences from observational data when rich covariates and complex relationships necessitate flexible modeling with neural networks. Standard approaches such as propensity weighting and…

机器学习 · 统计学 2018-02-16 Nathan Kallus

Real-world visual data often exhibits a long-tailed distribution, where some ''head'' classes have a large number of samples, yet only a few samples are available for ''tail'' classes. Such imbalanced distribution causes a great challenge…

计算机视觉与模式识别 · 计算机科学 2020-03-11 Junjie Zhang , Lingqiao Liu , Peng Wang , Chunhua Shen

In practice, machine learning experts are often confronted with imbalanced data. Without accounting for the imbalance, common classifiers perform poorly and standard evaluation metrics mislead the practitioners on the model's performance. A…

机器学习 · 计算机科学 2020-07-21 Ramiro Camino , Christian Hammerschmidt , Radu State

Real-world large-scale datasets are both noisily labeled and class-imbalanced. The issues seriously hurt the generalization of trained models. It is hence significant to address the simultaneous incorrect labeling and class-imbalance, i.e.,…

机器学习 · 计算机科学 2023-11-08 Manyi Zhang , Xuyang Zhao , Jun Yao , Chun Yuan , Weiran Huang

Self-supervised learning is a powerful paradigm for representation learning on unlabelled images. A wealth of effective new methods based on instance matching rely on data-augmentation to drive learning, and these have reached a rough…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Linus Ericsson , Henry Gouk , Timothy M. Hospedales