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This paper proposes an additive phoneme-aware margin softmax (APM-Softmax) loss to train the multi-task learning network with phonetic information for language recognition. In additive margin softmax (AM-Softmax) loss, the margin is set as…

声音 · 计算机科学 2021-06-25 Zheng Li , Yan Liu , Lin Li , Qingyang Hong

Many machine learning applications such as in vision, biology and social networking deal with data in high dimensions. Feature selection is typically employed to select a subset of features which im- proves generalization accuracy as well…

机器学习 · 计算机科学 2016-06-15 Yamuna Prasad , Dinesh Khandelwal , K. K. Biswas

With the development of convolutional neural networks (CNNs) in recent years, the network structure has become more and more complex and varied, and has achieved very good results in pattern recognition, image classification, object…

计算机视觉与模式识别 · 计算机科学 2019-04-29 Qiuyu Zhu , Pengju Zhang , Xin Ye

With increasing appealing to privacy issues in face recognition, federated learning has emerged as one of the most prevalent approaches to study the unconstrained face recognition problem with private decentralized data. However,…

计算机视觉与模式识别 · 计算机科学 2021-12-15 Yifan Niu , Weihong Deng

Deep CNNs have been pushing the frontier of visual recognition over past years. Besides recognition accuracy, strong demands in understanding deep CNNs in the research community motivate developments of tools to dissect pre-trained models…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Bangjie Yin , Luan Tran , Haoxiang Li , Xiaohui Shen , Xiaoming Liu

Softmax function is widely used in artificial neural networks for multiclass classification, multilabel classification, attention mechanisms, etc. However, its efficacy is often questioned in literature. The log-softmax loss has been shown…

机器学习 · 计算机科学 2020-11-24 Kunal Banerjee , Vishak Prasad C , Rishi Raj Gupta , Karthik Vyas , Anushree H , Biswajit Mishra

Softmax loss is widely used in deep neural networks for multi-class classification, where each class is represented by a weight vector, a sample is represented as a feature vector, and the feature vector has the largest projection on the…

计算机视觉与模式识别 · 计算机科学 2017-05-30 Yuhui Yuan , Kuiyuan Yang , Chao Zhang

Face representation in the wild is extremely hard due to the large scale face variations. To this end, some deep convolutional neural networks (CNNs) have been developed to learn discriminative feature by designing properly margin-based…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Jianjun Qian , Shumin Zhu , Chaoyu Zhao , Jian Yang , Wai Keung Wong

Features play a crucial role in computer vision. Initially designed to detect salient elements by means of handcrafted algorithms, features are now often learned by different layers in Convolutional Neural Networks (CNNs). This paper…

计算机视觉与模式识别 · 计算机科学 2021-11-18 Loris Nanni , Stefano Ghidoni , Sheryl Brahnam

The key factor in implementing machine learning algorithms in decision-making situations is not only the accuracy of the model but also its confidence level. The confidence level of a model in a classification problem is often given by the…

机器学习 · 统计学 2024-05-02 Masanari Kimura , Hiroki Naganuma

Traditional deep learning models rely on methods such as softmax cross-entropy and ArcFace loss for tasks like classification and face recognition. These methods mainly explore angular features in a hyperspherical space, often resulting in…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Chiranjeev Chiranjeev , Muskan Dosi , Kartik Thakral , Mayank Vatsa , Richa Singh

The backbone of traditional CNN classifier is generally considered as a feature extractor, followed by a linear layer which performs the classification. We propose a novel loss function, termed as CAM-loss, to constrain the embedded feature…

计算机视觉与模式识别 · 计算机科学 2022-03-09 Chaofei Wang , Jiayu Xiao , Yizeng Han , Qisen Yang , Shiji Song , Gao Huang

We present a formulation of deep learning that aims at producing a large margin classifier. The notion of margin, minimum distance to a decision boundary, has served as the foundation of several theoretically profound and empirically…

机器学习 · 统计学 2018-12-05 Gamaleldin F. Elsayed , Dilip Krishnan , Hossein Mobahi , Kevin Regan , Samy Bengio

Previous work has proposed many new loss functions and regularizers that improve test accuracy on image classification tasks. However, it is not clear whether these loss functions learn better representations for downstream tasks. This…

计算机视觉与模式识别 · 计算机科学 2021-11-05 Simon Kornblith , Ting Chen , Honglak Lee , Mohammad Norouzi

Efficient feature learning with Convolutional Neural Networks (CNNs) constitutes an increasingly imperative property since several challenging tasks of computer vision tend to require cascade schemes and modalities fusion. Feature learning…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Ioannis Kansizoglou , Nicholas Santavas , Loukas Bampis , Antonios Gasteratos

In this work a novel approach for weakly supervised object detection that incorporates pointwise mutual information is presented. A fully convolutional neural network architecture is applied in which the network learns one filter per object…

计算机视觉与模式识别 · 计算机科学 2018-01-29 Rene Grzeszick , Sebastian Sudholt , Gernot A. Fink

For the convolutional neural network (CNN) used for pattern classification, the training loss function is usually applied to the final output of the network, except for some regularization constraints on the network parameters. However,…

计算机视觉与模式识别 · 计算机科学 2024-01-01 Qiuyu Zhu , Hao Wang , Xuewen Zu , Chengfei Liu

Face recognition has achieved unprecedented results, surpassing human capabilities in certain scenarios. However, these automatic solutions are not ready for production because they can be easily fooled by simple identity impersonation…

计算机视觉与模式识别 · 计算机科学 2019-04-18 Daniel Pérez-Cabo , David Jiménez-Cabello , Artur Costa-Pazo , Roberto J. López-Sastre

The generalization error bound of support vector machine (SVM) depends on the ratio of radius and margin, while standard SVM only considers the maximization of the margin but ignores the minimization of the radius. Several approaches have…

机器学习 · 计算机科学 2015-04-21 Xiaohe Wu , Wangmeng Zuo , Yuanyuan Zhu , Liang Lin

The training scheme of deep face recognition has greatly evolved in the past years, yet it encounters new challenges in the large-scale data situation where massive and diverse hard cases occur. Especially in the range of low false accept…

计算机视觉与模式识别 · 计算机科学 2021-05-17 Dan Zeng , Hailin Shi , Hang Du , Jun Wang , Zhen Lei , Tao Mei