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The acquisition of large-scale, high-quality data is a resource-intensive and time-consuming endeavor. Compared to conventional Data Augmentation (DA) techniques (e.g. cropping and rotation), exploiting prevailing diffusion models for data…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Yunxiang Fu , Chaoqi Chen , Yu Qiao , Yizhou Yu

In binary classification, imbalance refers to situations in which one class is heavily under-represented. This issue is due to either a data collection process or because one class is indeed rare in a population. Imbalanced classification…

Methodology · Statistics 2022-01-07 Arezou Mojiri , Abbas Khalili , Ali Zeinal Hamadani

The real challenge in pattern recognition task and machine learning process is to train a discriminator using labeled data and use it to distinguish between future data as accurate as possible. However, most of the problems in the real…

Machine Learning · Computer Science 2012-08-08 Shafigh Parsazad , Ehsan Saboori , Amin Allahyar

Deep learning approaches are successful in a wide range of AI problems and in particular for visual recognition tasks. However, there are still open problems among which is the capacity to handle streams of visual information and the…

Machine Learning · Computer Science 2022-02-02 Umang Aggarwal , Adrian Popescu , Eden Belouadah , Céline Hudelot

This paper explores the application of a simple weighted loss function to Transformer-based models for multi-label emotion detection in SemEval-2025 Shared Task 11. Our approach addresses data imbalance by dynamically adjusting class…

Computation and Language · Computer Science 2026-02-05 Xia Cui

Text classification is a representative downstream task of natural language processing, and has exhibited excellent performance since the advent of pre-trained language models based on Transformer architecture. However, in pre-trained…

Computation and Language · Computer Science 2022-04-07 Byeong-Cheol Jo , Tak-Sung Heo , Yeongjoon Park , Yongmin Yoo , Won Ik Cho , Kyungsun Kim

Real-world data often exhibits long-tailed distributions with heavy class imbalance, posing great challenges for deep recognition models. We identify a persisting dilemma on the value of labels in the context of imbalanced learning: on the…

Machine Learning · Computer Science 2020-09-29 Yuzhe Yang , Zhi Xu

Different from deep neural networks for non-graph data classification, graph neural networks (GNNs) leverage the information exchange between nodes (or samples) when representing nodes. The category distribution shows an imbalance or even a…

Machine Learning · Computer Science 2021-10-19 Rui Wang , Weixuan Xiong , Qinghu Hou , Ou Wu

Deep learning (DL) algorithms have shown significant performance in various computer vision tasks. However, having limited labelled data lead to a network overfitting problem, where network performance is bad on unseen data as compared to…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Teerath Kumar , Alessandra Mileo , Rob Brennan , Malika Bendechache

Pathological image analysis is an important process for detecting abnormalities such as cancer from cell images. However, since the image size is generally very large, the cost of providing detailed annotations is high, which makes it…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Shusuke Takahama , Yusuke Kurose , Yusuke Mukuta , Hiroyuki Abe , Akihiko Yoshizawa , Tetsuo Ushiku , Masashi Fukayama , Masanobu Kitagawa , Masaru Kitsuregawa , Tatsuya Harada

Autonomous robot manipulation is a complex and continuously evolving robotics field. This paper focuses on data augmentation methods in imitation learning. Imitation learning consists of three stages: data collection from experts, learning…

Robotics · Computer Science 2024-10-08 Masato Kobayashi , Thanpimon Buamanee , Yuki Uranishi

Deep clustering, which learns representation and semantic clustering without labels information, poses a great challenge for deep learning-based approaches. Despite significant progress in recent years, most existing methods focus on…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Chuyu Zhang , Hui Ren , Xuming He

In real world datasets, particular groups are under-represented, much rarer than others, and machine learning classifiers will often preform worse on under-represented populations. This problem is aggravated across many domains where…

Machine Learning · Computer Science 2023-02-10 Arghya Datta , S. Joshua Swamidass

We consider the problem of active domain adaptation (ADA) to unlabeled target data, of which subset is actively selected and labeled given a budget constraint. Inspired by recent analysis on a critical issue from label distribution mismatch…

Machine Learning · Computer Science 2022-08-16 Sehyun Hwang , Sohyun Lee , Sungyeon Kim , Jungseul Ok , Suha Kwak

Large scale image dataset and deep convolutional neural network (DCNN) are two primary driving forces for the rapid progress made in generic object recognition tasks in recent years. While lots of network architectures have been…

Computer Vision and Pattern Recognition · Computer Science 2018-04-17 Yalong Bai , Kuiyuan Yang , Tao Mei , Wei-Ying Ma , Tiejun Zhao

Multi-label text classification is a challenging task because it requires capturing label dependencies. It becomes even more challenging when class distribution is long-tailed. Resampling and re-weighting are common approaches used for…

Computation and Language · Computer Science 2021-10-19 Yi Huang , Buse Giledereli , Abdullatif Köksal , Arzucan Özgür , Elif Ozkirimli

Dealing with severe class imbalance poses a major challenge for real-world applications, especially when the accurate classification and generalization of minority classes is of primary interest. In computer vision, learning from long…

Computer Vision and Pattern Recognition · Computer Science 2021-11-22 Zidi Xiu , Junya Chen , Ricardo Henao , Benjamin Goldstein , Lawrence Carin , Chenyang Tao

For machine learning task, lacking sufficient samples mean the trained model has low confidence to approach the ground truth function. Until recently, after the generative adversarial networks (GAN) had been proposed, we see the hope of…

Machine Learning · Computer Science 2019-05-22 Mengxiao Hu , Jinlong Li

Active learning (AL) algorithms aim to identify an optimal subset of data for annotation, such that deep neural networks (DNN) can achieve better performance when trained on this labeled subset. AL is especially impactful in industrial…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Zeyad Ali Sami Emam , Hong-Min Chu , Ping-Yeh Chiang , Wojciech Czaja , Richard Leapman , Micah Goldblum , Tom Goldstein

This paper addresses a regression problem in which output label values are the results of sensing the magnitude of a phenomenon. A low value of such labels can mean either that the actual magnitude of the phenomenon was low or that the…

Machine Learning · Computer Science 2023-06-01 Takayuki Katsuki , Takayuki Osogami