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This paper investigates the deep learning optimization problem with softmax cross-entropy loss. We propose a layer separation strategy to alleviate the strong nonconvexity encountered during training deep networks. For cross-entropy models…

机器学习 · 计算机科学 2026-04-28 Yaru Liu , Michael K. Ng , Yiqi Gu

Minimizing inconsistencies across successive versions of an AI system is as crucial as reducing the overall error. In image classification, such inconsistencies manifest as negative flips, where an updated model misclassifies test samples…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Simone Ricci , Niccolò Biondi , Federico Pernici , Alberto Del Bimbo

One-class classification refers to approaches of learning using data from a single class only. In this paper, we propose a deep learning one-class classification method suitable for multimodal data, which relies on two convolutional…

机器学习 · 计算机科学 2023-09-26 Firas Laakom , Fahad Sohrab , Jenni Raitoharju , Alexandros Iosifidis , Moncef Gabbouj

Visible-infrared image fusion is crucial in key applications such as autonomous driving and nighttime surveillance. Its main goal is to integrate multimodal information to produce enhanced images that are better suited for downstream tasks.…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Xiaopeng Liu , Yupei Lin , Sen Zhang , Xiao Wang , Yukai Shi , Liang Lin

Average-K classification is an alternative to top-K classification in which the number of labels returned varies with the ambiguity of the input image but must average to K over all the samples. A simple method to solve this task is to…

机器学习 · 计算机科学 2023-04-03 Camille Garcin , Maximilien Servajean , Alexis Joly , Joseph Salmon

Class imbalance poses a significant challenge in classification tasks, where traditional approaches often lead to biased models and unreliable predictions. Undersampling and oversampling techniques have been commonly employed to address…

In this paper, we present a supervised learning approach to training submodular scoring functions for extractive multi-document summarization. By taking a structured predicition approach, we provide a large-margin method that directly…

人工智能 · 计算机科学 2011-10-14 Ruben Sipos , Pannaga Shivaswamy , Thorsten Joachims

In this paper, we introduce a threshold-based framework for multiclass classification that generalizes the standard argmax rule. This is done by replacing the probabilistic interpretation of softmax outputs with a geometric one on the…

机器学习 · 计算机科学 2025-12-02 Francesco Marchetti , Edoardo Legnaro , Sabrina Guastavino

Deep convolutional neural networks have made significant breakthroughs in medical image classification, under the assumption that training samples from all classes are simultaneously available. However, in real-world medical scenarios,…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Xuze Hao , Wenqian Ni , Xuhao Jiang , Weimin Tan , Bo Yan

The challenges in applying contrastive learning to speaker verification (SV) are that the softmax-based contrastive loss lacks discriminative power and that the hard negative pairs can easily influence learning. To overcome the first…

音频与语音处理 · 电气工程与系统科学 2023-03-14 Zhe Li , Man-Wai Mak , Helen Mei-Ling Meng

Normalization is a vital process for any machine learning task as it controls the properties of data and affects model performance at large. The impact of particular forms of normalization, however, has so far been investigated in limited…

机器学习 · 计算机科学 2022-06-22 Chintan Trivedi , Konstantinos Makantasis , Antonios Liapis , Georgios N. Yannakakis

Efficient data compression is crucial for the storage and transmission of visual data. However, in facial expression recognition (FER) tasks, lossy compression often leads to feature degradation and reduced accuracy. To address these…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Xiumei Li , Marc Windsheimer , Misha Sadeghi , Björn Eskofier , André Kaup

Person recognition aims at recognizing the same identity across time and space with complicated scenes and similar appearance. In this paper, we propose a novel method to address this task by training a network to obtain robust and…

计算机视觉与模式识别 · 计算机科学 2017-04-03 Yu Liu , Hongyang Li , Xiaogang Wang

The performance of face recognition system degrades when the variability of the acquired faces increases. Prior work alleviates this issue by either monitoring the face quality in pre-processing or predicting the data uncertainty along with…

计算机视觉与模式识别 · 计算机科学 2021-07-27 Qiang Meng , Shichao Zhao , Zhida Huang , Feng Zhou

Adversarial training has proven to be a highly effective method for improving the robustness of deep neural networks against adversarial attacks. Nonetheless, it has been observed to exhibit a limitation in terms of robust fairness,…

机器学习 · 计算机科学 2025-01-09 Hongxin Zhi , Hongtao Yu , Shaome Li , Xiuming Zhao , Yiteng Wu

Low resolution fine-grained classification has widespread applicability for applications where data is captured at a distance such as surveillance and mobile photography. While fine-grained classification with high resolution images has…

计算机视觉与模式识别 · 计算机科学 2021-05-04 Maneet Singh , Shruti Nagpal , Mayank Vatsa , Richa Singh

The softmax function is widely used in artificial neural networks for the multiclass classification problems, where the softmax transformation enforces the output to be positive and sum to one, and the corresponding loss function allows to…

机器学习 · 计算机科学 2021-12-24 Shaoshi Sun , Zhenyuan Zhang , BoCheng Huang , Pengbin Lei , Jianlin Su , Shengfeng Pan , Jiarun Cao

Face recognition has been an active and vital topic among computer vision community for a long time. Previous researches mainly focus on loss functions used for facial feature extraction network, among which the improvements of…

计算机视觉与模式识别 · 计算机科学 2021-01-26 Xiang An , Xuhan Zhu , Yang Xiao , Lan Wu , Ming Zhang , Yuan Gao , Bin Qin , Debing Zhang , Ying Fu

Multi-label classification (MLC) problems are becoming increasingly popular in the context of medical imaging. This has in part been driven by the fact that acquiring annotations for MLC is far less burdensome than for semantic segmentation…

计算机视觉与模式识别 · 计算机科学 2019-07-11 Thomas Kurmann , Pablo Marquez Neila , Sebastian Wolf , Raphael Sznitman

In this paper, we investigate the usage of autoencoders in modeling textual data. Traditional autoencoders suffer from at least two aspects: scalability with the high dimensionality of vocabulary size and dealing with task-irrelevant words.…

机器学习 · 计算机科学 2015-12-15 Shuangfei Zhai , Zhongfei Zhang