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Multi-modal deep metric learning is crucial for effectively capturing diverse representations in tasks such as face verification, fine-grained object recognition, and product search. Traditional approaches to metric learning, whether based…

计算机视觉与模式识别 · 计算机科学 2024-11-06 Hadush Hailu Gebrerufael , Anil Kumar Tiwari , Gaurav Neupane , Goitom Ybrah Hailu

This letter presents a novel training approach and loss function for learning low-light image enhancement auto-encoders. Our approach revolves around the use of a teacher-student auto-encoder setup coupled to a progressive learning approach…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Farida Mohsen , Tala Zaim , Ali Al-Zawqari , Ali Safa , Samir Belhaouari

The problem of monotone missing data has been broadly studied during the last two decades and has many applications in different fields such as bioinformatics or statistics. Commonly used imputation techniques require multiple iterations…

机器学习 · 计算机科学 2020-09-25 Thu Nguyen , Duy H. M. Nguyen , Huy Nguyen , Binh T. Nguyen , Bruce A. Wade

This paper considers the problem of error correction in multi-class classification of face images on unbalanced samples. The study is based on the analysis of a data frame containing images labeled by seven different emotional states of…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Andrey A. Lebedev , Victor B. Kazantsev , Sergey V. Stasenko

Class-imbalanced node classification tasks are prevalent in real-world scenarios. Due to the uneven distribution of nodes across different classes, learning high-quality node representations remains a challenging endeavor. The engineering…

机器学习 · 计算机科学 2024-05-24 Xinyu Guo , Kai Wu , Xiaoyu Zhang , Jing Liu

Deep embedding learning is expected to learn a metric space in which features have smaller maximal intra-class distance than minimal inter-class distance. In recent years, one research focus is to solve the open-set problem by…

计算机视觉与模式识别 · 计算机科学 2020-11-24 Hao Zhu , Yang Yuan , Guosheng Hu , Xiang Wu , Neil Robertson

Cross-entropy is a widely used loss function in applications. It coincides with the logistic loss applied to the outputs of a neural network, when the softmax is used. But, what guarantees can we rely on when using cross-entropy as a…

机器学习 · 计算机科学 2023-06-21 Anqi Mao , Mehryar Mohri , Yutao Zhong

This paper analyzes and compares different deep learning loss functions in the framework of multi-label remote sensing (RS) image scene classification problems. We consider seven loss functions: 1) cross-entropy loss; 2) focal loss; 3)…

计算机视觉与模式识别 · 计算机科学 2023-01-24 Hichame Yessou , Gencer Sumbul , Begüm Demir

There are many real-world classification problems wherein the issue of data imbalance (the case when a data set contains substantially more samples for one/many classes than the rest) is unavoidable. While under-sampling the problematic…

计算机视觉与模式识别 · 计算机科学 2018-01-09 John McKay , Isaac Gerg , Vishal Monga

The popular softmax loss and its recent extensions have achieved great success in the deep learning-based image classification. However, the data for training image classifiers usually has different quality. Ignoring such problem, the…

计算机视觉与模式识别 · 计算机科学 2020-07-29 Weihua Liu , Xiabi Liu , Murong Wang , Ling Ma

We propose a simple modification from a fixed margin triplet loss to an adaptive margin triplet loss. While the original triplet loss is used widely in classification problems such as face recognition, face re-identification and…

计算机视觉与模式识别 · 计算机科学 2021-07-14 Mai Lan Ha , Volker Blanz

In the absence of prior knowledge, ordinal embedding methods obtain new representation for items in a low-dimensional Euclidean space via a set of quadruple-wise comparisons. These ordinal comparisons often come from human annotators, and…

机器学习 · 计算机科学 2018-12-06 Ke Ma , Qianqian Xu , Zhiyong Yang , Xiaochun Cao

Latent class model (LCM), which is a finite mixture of different categorical distributions, is one of the most widely used models in statistics and machine learning fields. Because of its non-continuous nature and the flexibility in shape,…

机器学习 · 统计学 2021-03-23 Hao Chen , Lanshan Han , Alvin Lim

Many evaluation metrics can be used to assess the performance of models in binary classification tasks. However, most of them are derived from a confusion matrix in a non-differentiable form, making it very difficult to generate a…

机器学习 · 计算机科学 2024-05-24 Doheon Han , Nuno Moniz , Nitesh V Chawla

In the era of deep learning, loss functions determine the range of tasks available to models and algorithms. To support the application of deep learning in multi-label classification (MLC) tasks, we propose the ZLPR (zero-bounded…

机器学习 · 计算机科学 2022-08-08 Jianlin Su , Mingren Zhu , Ahmed Murtadha , Shengfeng Pan , Bo Wen , Yunfeng Liu

Object detection is an important task in computer vision which serves a lot of real-world applications such as autonomous driving, surveillance and robotics. Along with the rapid thrive of large-scale data, numerous state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2020-06-03 Trong Huy Phan , Kazuma Yamamoto

Deep classifiers have achieved great success in visual recognition. However, real-world data is long-tailed by nature, leading to the mismatch between training and testing distributions. In this paper, we show that the Softmax function,…

机器学习 · 计算机科学 2020-11-24 Jiawei Ren , Cunjun Yu , Shunan Sheng , Xiao Ma , Haiyu Zhao , Shuai Yi , Hongsheng Li

The concept of a minimax classifier is well-established in statistical decision theory, but its implementation via neural networks remains challenging, particularly in scenarios with imbalanced training data having a limited number of…

机器学习 · 计算机科学 2026-01-07 Hansung Choi , Daewon Seo

We propose performing imbalanced classification by regrouping majority classes into small classes so that we turn the problem into balanced multiclass classification. This new idea is dramatically different from popular loss reweighting and…

计算机视觉与模式识别 · 计算机科学 2022-10-28 Le Peng , Yash Travadi , Rui Zhang , Ying Cui , Ju Sun

Learning unbiased models on imbalanced datasets is a significant challenge. Rare classes tend to get a concentrated representation in the classification space which hampers the generalization of learned boundaries to new test examples. In…

计算机视觉与模式识别 · 计算机科学 2019-04-11 Salman Khan , Munawar Hayat , Waqas Zamir , Jianbing Shen , Ling Shao