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The effectiveness of machine learning models, particularly in unbalanced classification tasks, is often hindered by the failure to differentiate between critical instances near the decision boundary and redundant samples concentrated in the…

Machine Learning · Computer Science 2025-09-25 Samir Brahim Belhaouari , Yunis Carreon Kahalan , Humaira Shaffique , Ismael Belhaouari , Ashhadul Islam

Deep learning approaches to optical flow estimation have seen rapid progress over the recent years. One common trait of many networks is that they refine an initial flow estimate either through multiple stages or across the levels of a…

Computer Vision and Pattern Recognition · Computer Science 2019-04-11 Junhwa Hur , Stefan Roth

The margin-based softmax loss functions greatly enhance intra-class compactness and perform well on the tasks of face recognition and object classification. Outperformance, however, depends on the careful hyperparameter selection. Moreover,…

Computer Vision and Pattern Recognition · Computer Science 2019-12-18 JT Wu , L. Wang

Imbalanced classification problems are extremely common in natural language processing and are solved using a variety of resampling and filtering techniques, which often involve making decisions on how to select training data or decide…

Computation and Language · Computer Science 2022-09-02 Ryan Muther , David Smith

There is growing importance to detecting faults and implementing the best methods in industrial and real-world systems. We are searching for the most trustworthy and practical data-based fault detection methods proposed by artificial…

Systems and Control · Electrical Eng. & Systems 2023-01-11 Mohammad Hossein Modirrousta , Mahdi Aliyari Shoorehdeli , Mostafa Yari , Arash Ghahremani

Self-supervised learning has been successfully applied to pre-train video representations, which aims at efficient adaptation from pre-training domain to downstream tasks. Existing approaches merely leverage contrastive loss to learn…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Yuanze Lin , Xun Guo , Yan Lu

Machine learning has opened up new tools for financial fraud detection. Using a sample of annotated transactions, a machine learning classification algorithm learns to detect frauds. With growing credit card transaction volumes and rising…

Machine Learning · Computer Science 2022-08-26 Gayan K. Kulatilleke

Class imbalance has emerged as one of the major challenges for medical image segmentation. The model cascade (MC) strategy significantly alleviates the class imbalance issue via running a set of individual deep models for coarse-to-fine…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Chenhong Zhou , Changxing Ding , Xinchao Wang , Zhentai Lu , Dacheng Tao

In predictive tasks, real-world datasets often present different degrees of imbalanced (i.e., long-tailed or skewed) distributions. While the majority (the head) classes have sufficient samples, the minority (the tail) classes can be…

Machine Learning · Computer Science 2021-09-14 Chongsheng Zhang , Paolo Soda , Jingjun Bi , Gaojuan Fan , George Almpanidis , Salvador Garcia

The problem of class imbalance is extensive for focusing on numerous applications in the real world. In such a situation, nearly all of the examples are labeled as one class called majority class, while far fewer examples are labeled as the…

Over 85 oversampling algorithms, mostly extensions of the SMOTE algorithm, have been built over the past two decades, to solve the problem of imbalanced datasets. However, it has been evident from previous studies that different…

Machine Learning · Computer Science 2021-07-16 Saptarshi Bej , Kristian Schultz , Prashant Srivastava , Markus Wolfien , Olaf Wolkenhauer

Due to the over-fitting problem caused by imbalance samples, there is still room to improve the performance of data-driven automatic modulation classification (AMC) in noisy scenarios. By fully considering the signal characteristics, an AMC…

Signal Processing · Electrical Eng. & Systems 2022-03-08 Hao Shi , Qi Peng , Yiqi Zhuang

Several studies point out different causes of performance degradation in supervised machine learning. Problems such as class imbalance, overlapping, small-disjuncts, noisy labels, and sparseness limit accuracy in classification algorithms.…

Machine Learning · Computer Science 2020-04-17 Gustavo A. Valencia-Zapata , Carolina Gonzalez-Canas , Michael G. Zentner , Okan Ersoy , Gerhard Klimeck

In recent years, the clandestine nature of darknet activities has presented an escalating challenge to cybersecurity efforts, necessitating sophisticated methods for the detection and classification of network traffic associated with these…

Machine Learning · Computer Science 2024-08-31 Anjali Sureshkumar Nair , Prashant Nitnaware

The highest accuracy object detectors to date are based on a two-stage approach popularized by R-CNN, where a classifier is applied to a sparse set of candidate object locations. In contrast, one-stage detectors that are applied over a…

Computer Vision and Pattern Recognition · Computer Science 2018-02-08 Tsung-Yi Lin , Priya Goyal , Ross Girshick , Kaiming He , Piotr Dollár

In this paper, we introduce an innovative method to improve the convergence speed and accuracy of object detection neural networks. Our approach, CONVERGE-FAST-AUXNET, is based on employing multiple, dependent loss metrics and weighting…

Computer Vision and Pattern Recognition · Computer Science 2018-08-15 Benjamin Schnieders , Karl Tuyls

Class imbalance (CI) is a longstanding problem in machine learning, slowing down training and reducing performances. Although empirical remedies exist, it is often unclear which ones work best and when, due to the lack of an overarching…

Machine Learning · Computer Science 2025-08-06 F. S. Pezzicoli , V. Ros , F. P. Landes , M. Baity-Jesi

Verifiable training has shown success in creating neural networks that are provably robust to a given amount of noise. However, despite only enforcing a single robustness criterion, its performance scales poorly with dataset complexity. On…

Machine Learning · Computer Science 2020-12-16 Shiqi Wang , Kevin Eykholt , Taesung Lee , Jiyong Jang , Ian Molloy

Class imbalance (CI) in classification problems arises when the number of observations belonging to one class is lower than the other. Ensemble learning combines multiple models to obtain a robust model and has been prominently used with…

Machine Learning · Computer Science 2023-11-28 Azal Ahmad Khan , Omkar Chaudhari , Rohitash Chandra

As a data-driven method, the performance of deep convolutional neural networks (CNN) relies heavily on training data. The prediction results of traditional networks give a bias toward larger classes, which tend to be the background in the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 N. Anantrasirichai , David Bull