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Neural networks utilize the softmax as a building block in classification tasks, which contains an overconfidence problem and lacks an uncertainty representation ability. As a Bayesian alternative to the softmax, we consider a random…

机器学习 · 计算机科学 2020-06-30 Taejong Joo , Uijung Chung , Min-Gwan Seo

Metric learning aims at learning a distance which is consistent with the semantic meaning of the samples. The problem is generally solved by learning an embedding for each sample such that the embeddings of samples of the same category are…

机器学习 · 计算机科学 2018-09-13 Xu Zhang , Felix Xinnan Yu , Svebor Karaman , Wei Zhang , Shih-Fu Chang

Training a classifier over a large number of classes, known as 'extreme classification', has become a topic of major interest with applications in technology, science, and e-commerce. Traditional softmax regression induces a gradient cost…

机器学习 · 统计学 2020-02-18 Robert Bamler , Stephan Mandt

Large language models (LLMs) have brought significant changes to human society. Softmax regression and residual neural networks (ResNet) are two important techniques in deep learning: they not only serve as significant theoretical…

机器学习 · 计算机科学 2023-09-26 Zhao Song , Weixin Wang , Junze Yin

Multi-domain image-to-image translation with conditional Generative Adversarial Networks (GANs) can generate highly photo realistic images with desired target classes, yet these synthetic images have not always been helpful to improve…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Suman Sapkota , Bidur Khanal , Binod Bhattarai , Bishesh Khanal , Tae-Kyun Kim

Few-shot learning (FSL) aims to address the data-scarce problem. A standard FSL framework is composed of two components: (1) Pre-train. Employ the base data to generate a CNN-based feature extraction model (FEM). (2) Meta-test. Apply the…

计算机视觉与模式识别 · 计算机科学 2021-11-09 Shuai Shao , Lei Xing , Yan Wang , Rui Xu , Chunyan Zhao , Yan-Jiang Wang , Bao-Di Liu

There has long been debates on how we could interpret neural networks and understand the decisions our models make. Specifically, why deep neural networks tend to be error-prone when dealing with samples that output low softmax scores. We…

计算机视觉与模式识别 · 计算机科学 2018-12-04 Simiao Zuo , Jialin Wu

Important applications such as mobile computing require reducing the computational costs of neural network inference. Ideally, applications would specify their preferred tradeoff between accuracy and speed, and the network would optimize…

计算机视觉与模式识别 · 计算机科学 2020-11-25 Charles Herrmann , Richard Strong Bowen , Ramin Zabih

We empirically investigate the (negative) expected accuracy as an alternative loss function to cross entropy (negative log likelihood) for classification tasks. Coupled with softmax activation, it has small derivatives over most of its…

机器学习 · 计算机科学 2019-05-03 Ozan İrsoy

Deep convolutional neural networks (CNN) have proven to be remarkably effective in semantic segmentation tasks. Most popular loss functions were introduced targeting improved volumetric scores, such as the Dice coefficient (DSC). By design,…

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

The use of contrastive loss for representation learning has become prominent in computer vision, and it is now getting attention in Natural Language Processing (NLP). Here, we explore the idea of using a batch-softmax contrastive loss when…

计算与语言 · 计算机科学 2021-11-01 Anton Chernyavskiy , Dmitry Ilvovsky , Pavel Kalinin , Preslav Nakov

Discriminative features are critical for machine learning applications. Most existing deep learning approaches, however, rely on convolutional neural networks (CNNs) for learning features, whose discriminant power is not explicitly…

计算机视觉与模式识别 · 计算机科学 2018-04-24 Fusheng Hao , Jun Cheng , Lei Wang , Xinchao Wang , Jianzhong Cao , Xiping Hu , Dapeng Tao

Fine-grained entity type classification (FETC) is the task of classifying an entity mention to a broad set of types. Distant supervision paradigm is extensively used to generate training data for this task. However, generated training data…

计算与语言 · 计算机科学 2017-02-23 Abhishek , Ashish Anand , Amit Awekar

Learning discriminative representations is a central goal of supervised deep learning. While cross-entropy (CE) remains the dominant objective for classification, it does not explicitly enforce desirable geometric properties in the…

机器学习 · 计算机科学 2026-04-13 Matheus Vinícius Todescato , Joel Luís Carbonera

Widely used loss functions for CNN segmentation, e.g., Dice or cross-entropy, are based on integrals over the segmentation regions. Unfortunately, for highly unbalanced segmentations, such regional summations have values that differ by…

图像与视频处理 · 电气工程与系统科学 2020-10-20 Hoel Kervadec , Jihene Bouchtiba , Christian Desrosiers , Eric Granger , Jose Dolz , Ismail Ben Ayed

Dual-encoder (DE) models are widely used in retrieval tasks, most commonly studied on open QA benchmarks that are often characterized by multi-class and limited training data. In contrast, their performance in multi-label and data-rich…

机器学习 · 计算机科学 2024-03-19 Nilesh Gupta , Devvrit Khatri , Ankit S Rawat , Srinadh Bhojanapalli , Prateek Jain , Inderjit Dhillon

This paper presents a study on the soft-Dice loss, one of the most popular loss functions in medical image segmentation, for situations where noise is present in target labels. In particular, the set of optimal solutions are characterized…

计算机视觉与模式识别 · 计算机科学 2023-05-05 Marcus Nordström , Henrik Hult , Atsuto Maki , Fredrik Löfman

The objective learning formulation is essential for the success of convolutional neural networks. In this work, we analyse thoroughly the standard learning objective functions for multi-class classification CNNs: softmax regression (SR) for…

计算机视觉与模式识别 · 计算机科学 2019-05-15 Qi Dong , Xiatian Zhu , Shaogang Gong

We motivate and present Ring loss, a simple and elegant feature normalization approach for deep networks designed to augment standard loss functions such as Softmax. We argue that deep feature normalization is an important aspect of…

计算机视觉与模式识别 · 计算机科学 2018-03-02 Yutong Zheng , Dipan K. Pal , Marios Savvides