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Recent advancements in artificial intelligence, particularly deep neural networks, have pushed the boundaries of what is achievable in complex tasks. Traditional methods for training neural networks in classification problems often rely on…

机器学习 · 计算机科学 2024-09-10 Jaouad Dabounou

Training neural networks is an optimization problem, and finding a decent set of parameters through gradient descent can be a difficult task. A host of techniques has been developed to aid this process before and during the training phase.…

机器学习 · 计算机科学 2020-08-19 Divya Gaur , Joachim Folz , Andreas Dengel

Recent research has shown the advantages of using autoencoders based on deep neural networks for collaborative filtering. In particular, the recently proposed Mult-VAE model, which used the multinomial likelihood variational autoencoders,…

信息检索 · 计算机科学 2019-12-25 Ilya Shenbin , Anton Alekseev , Elena Tutubalina , Valentin Malykh , Sergey I. Nikolenko

Estimation of uncertainty in deep learning models is of vital importance, especially in medical imaging, where reliance on inference without taking into account uncertainty could lead to misdiagnosis. Recently, the probabilistic Variational…

机器学习 · 计算机科学 2020-10-20 Haleh Akrami , Anand A. Joshi , Sergul Aydore , Richard M. Leahy

Deep neural networks have become the default choice for many of the machine learning tasks such as classification and regression. Dropout, a method commonly used to improve the convergence of deep neural networks, generates an ensemble of…

机器学习 · 统计学 2019-04-11 Tal Kachman , Michal Moshkovitz , Michal Rosen-Zvi

Deep neural networks achieve state-of-the-art performance for a range of classification and inference tasks. However, the use of stochastic gradient descent combined with the nonconvexity of the underlying optimization problems renders…

机器学习 · 计算机科学 2020-01-29 Ramina Ghods , Andrew S. Lan , Tom Goldstein , Christoph Studer

Human mesh recovery from single images remains challenging due to inherent depth ambiguity and limited generalization across domains. While recent methods combine regression and optimization approaches, they struggle with poor…

计算机视觉与模式识别 · 计算机科学 2026-03-30 Shaurjya Mandal , Nutan Sharma , John Galeotti

Accurate quantification of uncertainty is crucial for real-world applications of machine learning. However, modern deep neural networks still produce unreliable predictive uncertainty, often yielding over-confident predictions. In this…

机器学习 · 计算机科学 2020-10-29 Peng Cui , Wenbo Hu , Jun Zhu

While deep neural networks can attain good accuracy on in-distribution test points, many applications require robustness even in the face of unexpected perturbations in the input, changes in the domain, or other sources of distribution…

机器学习 · 计算机科学 2022-10-12 Marvin Zhang , Sergey Levine , Chelsea Finn

Training deep networks that generalize to a wide range of variations in test data is essential to building accurate and robust image classifiers. One standard strategy is to apply data augmentation to synthetically enlarge the training set.…

计算机视觉与模式识别 · 计算机科学 2020-06-29 Yunhan Zhao , Ye Tian , Charless Fowlkes , Wei Shen , Alan Yuille

This paper proposes a statistically optimal approach for learning a function value using a confidence interval in a wide range of models, including general non-parametric estimation of an expected loss described as a stochastic programming…

机器学习 · 统计学 2025-08-07 Arnab Ganguly , Tobias Sutter

Normal mean-variance mixture distributions are widely applied to simplify a model's implementation and improve their computational efficiency under the Maximum Likelihood (ML) approach. Especially for distributions with normal mean-variance…

统计方法学 · 统计学 2015-06-18 Thanakorn Nitithumbundit , Jennifer S. K. Chan

Maximum likelihood estimators (MLE) and control variate estimators (CVE) have been used in conjunction with known information across sketching algorithms and applications in machine learning. We prove that under certain conditions in an…

Neural network (NN) ensembles can reduce large prediction variance of NN and improve prediction accuracy. For highly nonlinear problems with insufficient data set, the prediction accuracy of NN models becomes unstable, resulting in a…

机器学习 · 计算机科学 2022-10-20 Ungki Lee , Namwoo Kang

Maximum likelihood estimation (MLE) is a statistical method used to estimate the parameters of a probability distribution that best explain the observed data. In the context of text generation, MLE is often used to train generative language…

计算与语言 · 计算机科学 2023-10-27 Chenze Shao , Zhengrui Ma , Min Zhang , Yang Feng

Randomized artificial neural networks such as extreme learning machines provide an attractive and efficient method for supervised learning under limited computing ressources and green machine learning. This especially applies when equipping…

机器学习 · 统计学 2022-01-02 Ansgar Steland , Bart E. Pieters

We reinvigorate maximum likelihood estimation (MLE) for macroeconomic density forecasting through a novel neural network architecture with dedicated mean and variance hemispheres. Our architecture features several key ingredients making MLE…

计量经济学 · 经济学 2024-04-24 Philippe Goulet Coulombe , Mikael Frenette , Karin Klieber

In this paper, we exploit the properties of mean absolute error (MAE) as a loss function for the deep neural network (DNN) based vector-to-vector regression. The goal of this work is two-fold: (i) presenting performance bounds of MAE, and…

音频与语音处理 · 电气工程与系统科学 2020-08-18 Jun Qi , Jun Du , Sabato Marco Siniscalchi , Xiaoli Ma , Chin-Hui Lee

In temporal-difference reinforcement learning algorithms, variance in value estimation can cause instability and overestimation of the maximal target value. Many algorithms have been proposed to reduce overestimation, including several…

机器学习 · 计算机科学 2022-09-19 Litian Liang , Yaosheng Xu , Stephen McAleer , Dailin Hu , Alexander Ihler , Pieter Abbeel , Roy Fox

Most uses of machine learning today involve training a model from scratch for a particular task, or sometimes starting with a model pretrained on a related task and then fine-tuning on a downstream task. Both approaches offer limited…

机器学习 · 计算机科学 2022-05-26 Andrea Gesmundo , Jeff Dean