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Reinforcement Learning (RL) has proven effective in solving complex decision-making tasks across various domains, but challenges remain in continuous-time settings, particularly when state dynamics are governed by stochastic differential…

机器学习 · 计算机科学 2025-09-19 Chenyang Jiang , Donggyu Kim , Alejandra Quintos , Yazhen Wang

In order to push the performance on realistic computer vision tasks, the number of classes in modern benchmark datasets has significantly increased in recent years. This increase in the number of classes comes along with increased ambiguity…

机器学习 · 统计学 2016-04-14 Maksim Lapin , Matthias Hein , Bernt Schiele

We consider the problem of certifying the robustness of deep neural networks against real-world distribution shifts. To do so, we bridge the gap between hand-crafted specifications and realistic deployment settings by proposing a novel…

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

Mixture of experts (MoE) model is a statistical machine learning design that aggregates multiple expert networks using a softmax gating function in order to form a more intricate and expressive model. Despite being commonly used in several…

机器学习 · 统计学 2024-06-25 Huy Nguyen , Nhat Ho , Alessandro Rinaldo

The minimum mean-squared error (MMSE) is one of the most popular criteria for Bayesian estimation. Conversely, the signal-to-noise ratio (SNR) is a typical performance criterion in communications, radar, and generally detection theory. In…

信息论 · 计算机科学 2016-10-12 Luca Rugini , Paolo Banelli

In knowledge graph embedding, the theoretical relationship between the softmax cross-entropy and negative sampling loss functions has not been investigated. This makes it difficult to fairly compare the results of the two different loss…

机器学习 · 计算机科学 2022-03-17 Hidetaka Kamigaito , Katsuhiko Hayashi

We propose $\textit{Mish}$, a novel self-regularized non-monotonic activation function which can be mathematically defined as: $f(x)=x\tanh(softplus(x))$. As activation functions play a crucial role in the performance and training dynamics…

机器学习 · 计算机科学 2020-08-14 Diganta Misra

While neural network binary classifiers are often evaluated on metrics such as Accuracy and $F_1$-Score, they are commonly trained with a cross-entropy objective. How can this training-evaluation gap be addressed? While specific techniques…

机器学习 · 计算机科学 2022-06-03 Nathan Tsoi , Kate Candon , Deyuan Li , Yofti Milkessa , Marynel Vázquez

In this paper, we present the demonstration of training a four-layer neural network entirely using fully homomorphic encryption (FHE), supporting both single-output and multi-output classification tasks in a non-interactive setting. A key…

密码学与安全 · 计算机科学 2025-04-18 John Chiang

An alternative to extrinsic information transfer (EXIT) charts called mean squared error (MSE) charts that use a measure related to the MSE instead of mutual information is proposed. Using the relationship between mutual information and…

信息论 · 计算机科学 2007-07-13 Kapil Bhattad , Krishna Narayanan

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

Recent advancements in learning algorithms have demonstrated that the sharpness of the loss surface is an effective measure for improving the generalization gap. Building upon this concept, Sharpness-Aware Minimization (SAM) was proposed to…

机器学习 · 计算机科学 2024-06-21 Tanapat Ratchatorn , Masayuki Tanaka

This paper deals with the estimation of rare event probabilities using importance sampling (IS), where an optimal proposal distribution is computed with the cross-entropy (CE) method. Although, IS optimized with the CE method leads to an…

统计计算 · 统计学 2020-02-05 Patrick Héas

We propose a new training algorithm, ScanMix, that explores semantic clustering and semi-supervised learning (SSL) to allow superior robustness to severe label noise and competitive robustness to non-severe label noise problems, in…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Ragav Sachdeva , Filipe R Cordeiro , Vasileios Belagiannis , Ian Reid , Gustavo Carneiro

The estimation of covariance matrices of multiple classes with limited training data is a difficult problem. The sample covariance matrix (SCM) is known to perform poorly when the number of variables is large compared to the available…

统计方法学 · 统计学 2021-11-10 Elias Raninen , Esa Ollila

Motivated by multi-task and meta-learning approaches, we consider the problem of learning structure shared by tasks or users, such as shared low-rank representations or clustered structures. While all previous works focus on well-specified…

机器学习 · 计算机科学 2025-02-14 Mathieu Even , Laurent Massoulié

We introduce the Similarity-Distance-Magnitude (SDM) activation function, a more robust and interpretable formulation of the standard softmax activation function, adding Similarity (i.e., correctly predicted depth-matches into training)…

机器学习 · 计算机科学 2026-04-17 Allen Schmaltz

In a wide range of semantic segmentation tasks, fully convolutional neural networks (F-CNNs) have been successfully leveraged to achieve state-of-the-art performance. Architectural innovations of F-CNNs have mainly been on improving spatial…

计算机视觉与模式识别 · 计算机科学 2018-08-27 Abhijit Guha Roy , Nassir Navab , Christian Wachinger

We study the classical binary classification problem for hypothesis spaces of Deep Neural Networks (DNNs) under Tsybakov's low-noise condition with exponent $q>0$, as well as its limit case $q=\infty$, which we refer to as the \emph{hard…

机器学习 · 计算机科学 2026-05-06 Nathanael Tepakbong , Xiang Zhou , Ding-Xuan Zhou