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The Stochastic Approximation EM (SAEM) algorithm, a variant stochastic approximation of EM, is a versatile tool for inference in incomplete data models. In this paper, we review the fundamental EM algorithm and then focus especially on the…

统计方法学 · 统计学 2018-11-30 Vahid Tadayon

We provide a general theory of the expectation-maximization (EM) algorithm for inferring high dimensional latent variable models. In particular, we make two contributions: (i) For parameter estimation, we propose a novel high dimensional EM…

机器学习 · 统计学 2015-01-28 Zhaoran Wang , Quanquan Gu , Yang Ning , Han Liu

Deep Learning models are incredibly data-hungry and require very large labeled datasets for supervised learning. As a consequence, these models often suffer from overfitting, limiting their ability to generalize to real-world examples.…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Sahiti Yerramilli , Jayant Sravan Tamarapalli , Tanmay Girish Kulkarni , Jonathan Francis , Eric Nyberg

Data augmentation has been an indispensable tool to improve the performance of deep neural networks, however the augmentation can hardly transfer among different tasks and datasets. Consequently, a recent trend is to adopt AutoML technique…

计算机视觉与模式识别 · 计算机科学 2021-10-13 Aoming Liu , Zehao Huang , Zhiwu Huang , Naiyan Wang

In this work, we propose data augmentation methods for embeddings from pre-trained deep learning models that take a weighted combination of a pair of input embeddings, as inspired by Mixup, and combine such augmentation with extra label…

机器学习 · 计算机科学 2020-10-07 Cameron R. Wolfe , Keld T. Lundgaard

Data Augmentation through generating pseudo data has been proven effective in mitigating the challenge of data scarcity in the field of Grammatical Error Correction (GEC). Various augmentation strategies have been widely explored, most of…

计算与语言 · 计算机科学 2023-10-19 Jingheng Ye , Yinghui Li , Yangning Li , Hai-Tao Zheng

Exploiting symmetry in dynamical systems is a powerful way to improve the generalization of deep learning. The model learns to be invariant to transformation and hence is more robust to distribution shift. Data augmentation and equivariant…

机器学习 · 计算机科学 2022-06-22 Rui Wang , Robin Walters , Rose Yu

Several methods have been proposed for correcting the elevation bias in digital elevation models (DEMs) for example, linear regression. Nowadays, supervised machine learning enables the modelling of complex relationships between variables,…

机器学习 · 计算机科学 2024-02-13 Chukwuma Okolie , Adedayo Adeleke , Julian Smit , Jon Mills , Iyke Maduako , Caleb Ogbeta

We introduce a comprehensive data-driven framework aimed at enhancing the modeling of physical systems, employing inference techniques and machine learning enhancements. As a demonstrative application, we pursue the modeling of cathodic…

Neural networks are prone to learn easy solutions from superficial statistics in the data, namely shortcut learning, which impairs generalization and robustness of models. We propose a data augmentation strategy, named DFM-X, that leverages…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Shunxin Wang , Christoph Brune , Raymond Veldhuis , Nicola Strisciuglio

Despite continued advancement in recent years, deep neural networks still rely on large amounts of training data to avoid overfitting. However, labeled training data for real-world applications such as healthcare is limited and difficult to…

The standard approach to tackling computer vision problems is to train deep convolutional neural network (CNN) models using large-scale image datasets which are representative of the target task. However, in many scenarios, it is often…

计算机视觉与模式识别 · 计算机科学 2024-04-01 Alhassan Mumuni , Fuseini Mumuni , Nana Kobina Gerrar

Data augmentation is crucial for pixel-wise annotation tasks like semantic segmentation, where labeling requires significant effort and intensive labor. Traditional methods, involving simple transformations such as rotations and flips,…

计算机视觉与模式识别 · 计算机科学 2025-09-05 Quang-Huy Che , Duc-Tri Le , Bich-Nga Pham , Duc-Khai Lam , Vinh-Tiep Nguyen

Data augmentation forms the cornerstone of many modern machine learning training pipelines; yet, the mechanisms by which it works are not clearly understood. Much of the research on data augmentation (DA) has focused on improving existing…

机器学习 · 计算机科学 2023-04-13 Damien A. Dablain , Nitesh V. Chawla

The success of deep learning depends heavily on the availability of large datasets, but in robotic manipulation there are many learning problems for which such datasets do not exist. Collecting these datasets is time-consuming and…

机器人学 · 计算机科学 2022-07-21 Peter Mitrano , Dmitry Berenson

Document-level machine translation faces the challenge of data sparsity due to its long input length and a small amount of training data, increasing the risk of learning spurious patterns. To address this challenge, we propose a target-side…

计算与语言 · 计算机科学 2023-06-06 Guangsheng Bao , Zhiyang Teng , Yue Zhang

The performance of machine learning models under distribution shift has been the focus of the community in recent years. Most of current methods have been proposed to improve the robustness to distribution shift from the algorithmic…

计算机视觉与模式识别 · 计算机科学 2022-05-26 Ziquan Liu , Yi Xu , Yuanhong Xu , Qi Qian , Hao Li , Rong Jin , Xiangyang Ji , Antoni B. Chan

Data augmentation integrates domain knowledge into a dataset by making domain-informed modifications to existing data points. For example, image data can be augmented by duplicating images in different tints or orientations, thereby…

机器学习 · 计算机科学 2026-03-17 Mateusz Gajewski , Sophia Xiao , Bijan Mazaheri

Modern ML systems increasingly augment input instances with additional relevant information to enhance final prediction. Despite growing interest in such retrieval-augmented models, their fundamental properties and training are not well…

机器学习 · 计算机科学 2024-08-29 Soumya Basu , Ankit Singh Rawat , Manzil Zaheer

Data augmentation is an effective technique to improve the generalization of deep neural networks. Recently, AutoAugment proposed a well-designed search space and a search algorithm that automatically finds augmentation policies in a…

计算机视觉与模式识别 · 计算机科学 2021-10-08 Chih-Yang Chen , Che-Han Chang