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Reinforcement Learning (RL) has been widely applied to many control tasks and substantially improved the performances compared to conventional control methods in many domains where the reward function is well defined. However, for many…

机器学习 · 计算机科学 2024-03-22 Baohe Zhang , Yuan Zhang , Lilli Frison , Thomas Brox , Joschka Bödecker

Semi-supervised learning (SSL) has shown notable potential in relieving the heavy demand of dense prediction tasks on large-scale well-annotated datasets, especially for the challenging multi-organ segmentation (MoS). However, the…

计算机视觉与模式识别 · 计算机科学 2025-01-08 Zhenghao Feng , Lu Wen , Yuanyuan Xu , Binyu Yan , Xi Wu , Jiliu Zhou , Yan Wang

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,…

计算机视觉与模式识别 · 计算机科学 2019-12-18 JT Wu , L. Wang

Ensemble learning has achieved remarkable success in machine learning, but its reliance on numerous base learners limits its application in resource-constrained environments. This paper introduces an innovative "Margin-Maximizing…

机器学习 · 计算机科学 2024-09-20 Jinghui Yuan , Hao Chen , Renwei Luo , Feiping Nie

Although few-shot learning and one-class classification (OCC), i.e., learning a binary classifier with data from only one class, have been separately well studied, their intersection remains rather unexplored. Our work addresses the…

机器学习 · 计算机科学 2021-02-12 Ahmed Frikha , Denis Krompaß , Hans-Georg Köpken , Volker Tresp

Loss functions drive the optimization of machine learning algorithms. The choice of a loss function can have a significant impact on the training of a model, and how the model learns the data. Binary classification is one of the major…

机器学习 · 计算机科学 2022-11-02 Rayan Wali

Multi-label loss functions are usually non-differentiable, requiring surrogate loss functions for gradient-based optimisation. The consistency of surrogate loss functions is not proven and is exacerbated by the conflicting nature of…

机器学习 · 计算机科学 2024-02-02 Kaan Demir , Bach Nguyen , Bing Xue , Mengjie Zhang

Deep Metric Learning (DML) loss functions traditionally aim to control the forces of separability and compactness within an embedding space so that the same class data points are pulled together and different class ones are pushed apart.…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Michael G. DeMoor , John J. Prevost

In real-world applications of multi-class classification models, misclassification in an important class (e.g., stop sign) can be significantly more harmful than in other classes (e.g., speed limit). In this paper, we propose a loss…

机器学习 · 计算机科学 2024-06-03 Daiki Nishiyama , Kazuto Fukuchi , Youhei Akimoto , Jun Sakuma

Index structures are fundamental for efficient query processing on large-scale datasets. Learned indexes model the indexing process as a prediction problem to overcome the inherent trade-offs of traditional indexes. However, most existing…

数据库 · 计算机科学 2026-03-31 Yuzhen Chen , Bin Yao

Loss functions steer the optimization direction of recommendation models and are critical to model performance, but have received relatively little attention in recent recommendation research. Among various losses, we find Softmax loss (SL)…

机器学习 · 计算机科学 2023-12-21 Junkang Wu , Jiawei Chen , Jiancan Wu , Wentao Shi , Jizhi Zhang , Xiang Wang

We introduce a novel family of adaptive filtering algorithms based on a relative logarithmic cost. The new family intrinsically combines the higher and lower order measures of the error into a single continuous update based on the error…

机器学习 · 计算机科学 2015-06-18 Muhammed O. Sayin , N. Denizcan Vanli , Suleyman S. Kozat

To enhance the reproducibility and reliability of deep learning models, we address a critical gap in current training methodologies: the lack of mechanisms that ensure consistent and robust performance across runs. Our empirical analysis…

机器学习 · 计算机科学 2026-01-05 Waqas Ahmed , Sheeba Samuel , Kevin Coakley , Birgitta Koenig-Ries , Odd Erik Gundersen

In multi-task learning (MTL), gradient balancing has recently attracted more research interest than loss balancing since it often leads to better performance. However, loss balancing is much more efficient than gradient balancing, and thus…

机器学习 · 计算机科学 2023-07-31 Yanqi Dai , Nanyi Fei , Zhiwu Lu

The forward-forward algorithm presents a new method of training neural networks by updating weights during an inference, performing parameter updates for each layer individually. This immediately reduces memory requirements during training…

机器学习 · 计算机科学 2023-06-28 Michael Hopwood

The top-k error is a common measure of performance in machine learning and computer vision. In practice, top-k classification is typically performed with deep neural networks trained with the cross-entropy loss. Theoretical results indeed…

机器学习 · 计算机科学 2018-02-22 Leonard Berrada , Andrew Zisserman , M. Pawan Kumar

In neural networks, the loss function represents the core of the learning process that leads the optimizer to an approximation of the optimal convergence error. Convolutional neural networks (CNN) use the loss function as a supervisory…

计算机视觉与模式识别 · 计算机科学 2020-09-30 Riccardo La Grassa , Ignazio Gallo , Nicola Landro

One-Class Classification (OCC) is a special case of multi-class classification, where data observed during training is from a single positive class. The goal of OCC is to learn a representation and/or a classifier that enables recognition…

计算机视觉与模式识别 · 计算机科学 2021-01-11 Pramuditha Perera , Poojan Oza , Vishal M. Patel

Value function learning plays a central role in many state-of-the-art reinforcement-learning algorithms. Many popular algorithms like Q-learning do not optimize any objective function, but are fixed-point iterations of some variant of…

机器学习 · 计算机科学 2020-01-10 Yihao Feng , Lihong Li , Qiang Liu

Deep metric learning has yielded impressive results in tasks such as clustering and image retrieval by leveraging neural networks to obtain highly discriminative feature embeddings, which can be used to group samples into different classes.…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Ismail Elezi , Sebastiano Vascon , Alessandro Torcinovich , Marcello Pelillo , Laura Leal-Taixe