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Confidence calibration is of great importance to the reliability of decisions made by machine learning systems. However, discriminative classifiers based on deep neural networks are often criticized for producing overconfident predictions…

机器学习 · 计算机科学 2021-08-17 Yezhen Wang , Bo Li , Tong Che , Kaiyang Zhou , Ziwei Liu , Dongsheng Li

We consider neural networks with a single hidden layer and non-decreasing homogeneous activa-tion functions like the rectified linear units. By letting the number of hidden units grow unbounded and using classical non-Euclidean…

机器学习 · 计算机科学 2016-11-01 Francis Bach

Quasi-probabilities appear across diverse areas of physics, but their conceptual foundations remain unclear: they are often treated merely as computational tools, and operations like conditioning and Bayes' theorem become ambiguous. We…

量子物理 · 物理学 2026-02-16 Jacopo Surace

We introduce a novel uncertainty estimation for classification tasks for Bayesian convolutional neural networks with variational inference. By normalizing the output of a Softplus function in the final layer, we estimate aleatoric and…

机器学习 · 计算机科学 2019-05-15 Kumar Shridhar , Felix Laumann , Marcus Liwicki

This paper presents a framework in which hierarchical softmax is used to create a global hierarchical classifier. The approach is applicable for any classification task where there is a natural hierarchy among classes. We show empirical…

机器学习 · 统计学 2023-08-03 Jetze Schuurmans , Flavius Frasincar

This paper proposes the matrix-weighted consensus algorithm, which is a generalization of the consensus algorithm in the literature. Given a networked dynamical system where the interconnections between agents are weighted by nonnegative…

最优化与控制 · 数学 2018-01-09 Minh Hoang Trinh , Hyo-Sung Ahn

In federated learning, differences in the data or objectives between the participating nodes motivate approaches to train a personalized machine learning model for each node. One such approach is weighted averaging between a locally trained…

机器学习 · 计算机科学 2021-10-26 Felix Grimberg , Mary-Anne Hartley , Sai P. Karimireddy , Martin Jaggi

We study a one-dimensional chain of harmonically coupled units in an asymmetric anharmonic soft potential. Due to nonlinear localisation of energy, this system exhibits extreme events in the sense that individual elements of the chain show…

混沌动力学 · 物理学 2016-12-28 Colm Mulhern , Stephan Bialonski , Holger Kantz

This paper addresses the distributed stochastic minimax optimization problem subject to stochastic constraints. We propose a novel first-order Softmax-Weighted Switching Gradient method tailored for federated learning. Under full client…

机器学习 · 计算机科学 2026-03-09 Zhankun Luo , Antesh Upadhyay , Sang Bin Moon , Abolfazl Hashemi

We suggest generalized robustness for quantifying nonlocality and derive its equivalence to the maximum violation ratio of Bell inequalities defined as vectors with non-negative elements. We investigate its properties by comparing it with…

量子物理 · 物理学 2025-04-29 Kyunghyun Baek , Junghee Ryu , Jinhyoung Lee

Latent categorical variables are frequently found in deep learning architectures. They can model actions in discrete reinforcement-learning environments, represent categories in latent-variable models, or express relations in graph neural…

机器学习 · 计算机科学 2026-05-14 Alessandro Manenti , Cesare Alippi

We provide two characterizations, one axiomatic and the other neuro-computational, of the dependence of choice probabilities on deadlines, within the widely used softmax representation \[ p_{t}\left( a,A\right) =\dfrac{e^{\frac{u\left(…

理论经济学 · 经济学 2021-01-28 Simone Cerreia-Vioglio , Fabio Maccheroni , Massimo Marinacci , Aldo Rustichini

We present a latent variable model for classification that provides a novel probabilistic interpretation of neural network softmax classifiers. We derive a variational objective to train the model, analogous to the evidence lower bound…

机器学习 · 计算机科学 2024-01-10 Shehzaad Dhuliawala , Mrinmaya Sachan , Carl Allen

Complex numbers define the relationship between entities in many situations. A canonical example would be the off-diagonal terms in a Hamiltonian matrix in quantum physics. Recent years have seen an increasing interest to extend the tools…

社会与信息网络 · 计算机科学 2023-07-06 Yu Tian , Renaud Lambiotte

Recent neural network and language models rely on softmax distributions with an extremely large number of categories. Since calculating the softmax normalizing constant in this context is prohibitively expensive, there is a growing…

机器学习 · 统计学 2018-03-26 Francois Fagan , Garud Iyengar

It is known that the singularity in the non-cutoff cross-section of the Boltzmann equation leads to the gain of regularity and gain of weight in the velocity variable. By defining and analyzing a non-isotropy norm which precisely captures…

偏微分方程分析 · 数学 2010-10-28 Radjesvarane Alexandre , Yoshinori Morimoto , Seiji Ukai , Chao-Jiang Xu , Tong Yang

Neural Network Language Models (NNLMs) generate probability distributions by applying a softmax function to a distance metric formed by taking the dot product of a prediction vector with all word vectors in a high-dimensional embedding…

机器学习 · 计算机科学 2020-05-07 David Demeter , Gregory Kimmel , Doug Downey

We propose a new self-organizing hierarchical softmax formulation for neural-network-based language models over large vocabularies. Instead of using a predefined hierarchical structure, our approach is capable of learning word clusters with…

计算与语言 · 计算机科学 2017-07-29 Yikang Shen , Shawn Tan , Chrisopher Pal , Aaron Courville

It is often remarked that neural networks fail to increase their uncertainty when predicting on data far from the training distribution. Yet naively using softmax confidence as a proxy for uncertainty achieves modest success in tasks…

机器学习 · 计算机科学 2021-06-10 Tim Pearce , Alexandra Brintrup , Jun Zhu

We consider the weight design problem for the consensus algorithm under a finite time horizon. We assume that the underlying network is random where the links fail at each iteration with certain probability and the link failures can be…

信息论 · 计算机科学 2009-09-29 Dusan Jakovetic , Joao Xavier , Jose' M. F. Moura