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Data augmentation is a ubiquitous technique for increasing the size of labeled training sets by leveraging task-specific data transformations that preserve class labels. While it is often easy for domain experts to specify individual…

In the practical business of asset management by investment trusts and the like, the general practice is to manage over the medium to long term owing to the burden of operations and increase in transaction costs with the increase in…

计算金融 · 定量金融 2023-01-31 Kazuki Amagai , Tomoya Suzuki

In many machine learning problems, large-scale datasets have become the de-facto standard to train state-of-the-art deep networks at the price of heavy computation load. In this paper, we focus on condensing large training sets into…

机器学习 · 计算机科学 2021-06-11 Bo Zhao , Hakan Bilen

Data augmentation is an important facilitator of deep learning applications in the time series domain. A gap is identified in the literature, demonstrating sparse exploration of the transformer, the dominant sequence model, for data…

Data augmentation is an effective technique to improve the generalization of deep neural networks. However, previous data augmentation methods usually treat the augmented samples equally without considering their individual impacts on the…

机器学习 · 计算机科学 2021-03-17 Mingyang Yi , Lu Hou , Lifeng Shang , Xin Jiang , Qun Liu , Zhi-Ming Ma

Surrogate models driven by sizeable datasets and scientific machine-learning methods have emerged as an attractive microstructure simulation tool with the potential to deliver predictive microstructure evolution dynamics with huge savings…

材料科学 · 物理学 2024-01-22 Shaoxun Fan , Andrew L. Hitt , Ming Tang , Babak Sadigh , Fei Zhou

Data augmentation is an essential technique for improving recognition accuracy in object recognition using deep learning. Methods that generate mixed data from multiple data sets, such as mixup, can acquire new diversity that is not…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Shungo Fujii , Yasunori Ishii , Kazuki Kozuka , Tsubasa Hirakawa , Takayoshi Yamashita , Hironobu Fujiyoshi

Due to the latest advances in technology, telescopes with significant sky coverage will produce millions of astronomical alerts per night that must be classified both rapidly and automatically. Currently, classification consists of…

天体物理仪器与方法 · 物理学 2022-08-17 Germán García-Jara , Pavlos Protopapas , Pablo A. Estévez

Handwritten text and scene text suffer from various shapes and distorted patterns. Thus training a robust recognition model requires a large amount of data to cover diversity as much as possible. In contrast to data collection and…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Canjie Luo , Yuanzhi Zhu , Lianwen Jin , Yongpan Wang

This paper investigates the impact of various data augmentation techniques on the performance of object detection models. Specifically, we explore classical augmentation methods, image compositing, and advanced generative models such as…

计算机视觉与模式识别 · 计算机科学 2025-02-20 Ang Jia Ning Shermaine , Michalis Lazarou , Tania Stathaki

On image data, data augmentation is becoming less relevant due to the large amount of available training data and regularization techniques. Common approaches are moving windows (cropping), scaling, affine distortions, random noise, and…

计算机视觉与模式识别 · 计算机科学 2018-01-10 Mario Michael Krell , Anett Seeland , Su Kyoung Kim

Data privacy concerns have led to the growing interest in synthetic data, which strives to preserve the statistical properties of the original dataset while ensuring privacy by excluding real records. Recent advances in deep neural networks…

统计方法学 · 统计学 2025-07-15 Nir Keret , Ali Shojaie

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…

Data augmentation is an essential technique for improving generalization ability of deep learning models. Recently, AutoAugment has been proposed as an algorithm to automatically search for augmentation policies from a dataset and has…

机器学习 · 计算机科学 2020-01-09 Sungbin Lim , Ildoo Kim , Taesup Kim , Chiheon Kim , Sungwoong Kim

Recent work argues that robust training requires substantially larger datasets than those required for standard classification. On CIFAR-10 and CIFAR-100, this translates into a sizable robust-accuracy gap between models trained solely on…

Chest X-rays (CXR) are essential for diagnosing a variety of conditions, but when used on new populations, model generalizability issues limit their efficacy. Generative AI, particularly denoising diffusion probabilistic models (DDPMs),…

Neural networks have revolutionized many empirical fields, yet their application to financial time series forecasting remains controversial. In this study, we demonstrate that the conventional practice of estimating models locally in…

计量经济学 · 经济学 2025-02-21 Chen Liu , Minh-Ngoc Tran , Chao Wang , Richard Gerlach , Robert Kohn

The quality and size of training set have great impact on the results of deep learning-based face related tasks. However, collecting and labeling adequate samples with high quality and balanced distributions still remains a laborious and…

计算机视觉与模式识别 · 计算机科学 2020-04-06 Xiang Wang , Kai Wang , Shiguo Lian

Automated data augmentation has shown superior performance in image recognition. Existing works search for dataset-level augmentation policies without considering individual sample variations, which are likely to be sub-optimal. On the…

机器学习 · 计算机科学 2020-12-23 Fengwei Zhou , Jiawei Li , Chuanlong Xie , Fei Chen , Lanqing Hong , Rui Sun , Zhenguo Li

Data augmentation has been widely used to improve generalizability of machine learning models. However, comparatively little work studies data augmentation for graphs. This is largely due to the complex, non-Euclidean structure of graphs,…

机器学习 · 计算机科学 2020-12-03 Tong Zhao , Yozen Liu , Leonardo Neves , Oliver Woodford , Meng Jiang , Neil Shah