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Deep Neural Networks are well known for efficiently fitting training data, yet experiencing poor generalization capabilities whenever some kind of bias dominates over the actual task labels, resulting in models learning "shortcuts". In…

Machine Learning · Computer Science 2024-08-12 Pietro Morerio , Ruggero Ragonesi , Vittorio Murino

Data augmentation has been widely used to improve deep neural networks in many research fields, such as computer vision. However, less work has been done in the context of text, partially due to its discrete nature and the complexity of…

Computation and Language · Computer Science 2021-01-12 Ping Yu , Ruiyi Zhang , Yang Zhao , Yizhe Zhang , Chunyuan Li , Changyou Chen

Visual reinforcement learning (RL), which makes decisions directly from high-dimensional visual inputs, has demonstrated significant potential in various domains. However, deploying visual RL techniques in the real world remains challenging…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Guozheng Ma , Zhen Wang , Zhecheng Yuan , Xueqian Wang , Bo Yuan , Dacheng Tao

Deep Imitation Learning requires a large number of expert demonstrations, which are not always easy to obtain, especially for complex tasks. A way to overcome this shortage of labels is through data augmentation. However, this cannot be…

Machine Learning · Computer Science 2021-03-29 Dafni Antotsiou , Carlo Ciliberto , Tae-Kyun Kim

In order for reinforcement learning techniques to be useful in real-world decision making processes, they must be able to produce robust performance from limited data. Deep policy optimization methods have achieved impressive results on…

Machine Learning · Computer Science 2020-12-22 James Queeney , Ioannis Ch. Paschalidis , Christos G. Cassandras

Data augmentation methods in combination with deep neural networks have been used extensively in computer vision on classification tasks, achieving great success; however, their use in time series classification is still at an early stage.…

Statistical Finance · Quantitative Finance 2020-10-29 Elizabeth Fons , Paula Dawson , Xiao-jun Zeng , John Keane , Alexandros Iosifidis

In supervised machine learning (SML) research, large training datasets are essential for valid results. However, obtaining primary data in learning analytics (LA) is challenging. Data augmentation can address this by expanding and…

Machine Learning · Computer Science 2024-12-04 Valdemar Švábenský , Conrad Borchers , Elizabeth B. Cloude , Atsushi Shimada

Data augmentation plays a pivotal role in enhancing and diversifying training data. Nonetheless, consistently improving model performance in varied learning scenarios, especially those with inherent data biases, remains challenging. To…

Machine Learning · Computer Science 2024-06-04 Xiaoling Zhou , Wei Ye , Zhemg Lee , Rui Xie , Shikun Zhang

Human-designed data augmentation strategies have been replaced by automatically learned augmentation policy in the past two years. Specifically, recent work has empirically shown that the superior performance of the automated data…

Computer Vision and Pattern Recognition · Computer Science 2021-08-13 Zirui Liu , Haifeng Jin , Ting-Hsiang Wang , Kaixiong Zhou , Xia Hu

Deep Learning (DL) methods have emerged as one of the most powerful tools for functional approximation and prediction. While the representation properties of DL have been well studied, uncertainty quantification remains challenging and…

Machine Learning · Statistics 2022-10-25 Yuexi Wang , Nicholas G. Polson , Vadim O. Sokolov

While data augmentation (DA) is generally applied to input data, several studies have reported that applying DA to hidden layers in neural networks, i.e., feature augmentation, can improve performance. However, in previous studies, the…

Machine Learning · Computer Science 2024-08-27 Tomoumi Takase , Ryo Karakida

Recently, a number of new Semi-Supervised Learning methods have emerged. As the accuracy for ImageNet and similar datasets increased over time, the performance on tasks beyond the classification of natural images is yet to be explored. Most…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Tim Frommknecht , Pedro Alves Zipf , Quanfu Fan , Nina Shvetsova , Hilde Kuehne

Tensor-valued data benefits greatly from dimension reduction as the reduction in size is exponential in the number of modes. To achieve maximal reduction without loss in information, our objective in this work is to give an automated…

Methodology · Statistics 2022-07-22 Una Radojicic , Niko Lietzen , Klaus Nordhausen , Joni Virta

Deep learning's success has been attributed to the training of large, overparameterized models on massive amounts of data. As this trend continues, model training has become prohibitively costly, requiring access to powerful computing…

Machine Learning · Computer Science 2021-11-25 Ravi S Raju , Kyle Daruwalla , Mikko Lipasti

Extensive efforts have been made to improve the generalization ability of Reinforcement Learning (RL) methods via domain randomization and data augmentation. However, as more factors of variation are introduced during training, optimization…

Machine Learning · Computer Science 2021-04-12 Nicklas Hansen , Xiaolong Wang

Image augmentations applied during training are crucial for the generalization performance of image classifiers. Therefore, a large body of research has focused on finding the optimal augmentation policy for a given task. Yet, RandAugment…

Machine Learning · Computer Science 2021-12-06 Arno Blaas , Xavier Suau , Jason Ramapuram , Nicholas Apostoloff , Luca Zappella

Deep neural network (DNN) based approaches have been widely investigated and deployed in medical image analysis. For example, fully convolutional neural networks (FCN) achieve the state-of-the-art performance in several applications of…

Computer Vision and Pattern Recognition · Computer Science 2020-06-11 Dong Yang , Holger Roth , Ziyue Xu , Fausto Milletari , Ling Zhang , Daguang Xu

While large-scale training data is fundamental for developing capable large language models (LLMs), strategically selecting high-quality data has emerged as a critical approach to enhance training efficiency and reduce computational costs.…

Machine Learning · Computer Science 2025-07-23 Yang Yu , Kai Han , Hang Zhou , Yehui Tang , Kaiqi Huang , Yunhe Wang , Dacheng Tao

With the rapid development of deep learning, automatic modulation recognition (AMR), as an important task in cognitive radio, has gradually transformed from traditional feature extraction and classification to automatic classification by…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Xinjie Xu , Zhuangzhi Chen , Dongwei Xu , Huaji Zhou , Shanqing Yu , Shilian Zheng , Qi Xuan , Xiaoniu Yang

Data augmentation is widely known as a simple yet surprisingly effective technique for regularizing deep networks. Conventional data augmentation schemes, e.g., flipping, translation or rotation, are low-level, data-independent and…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Yulin Wang , Gao Huang , Shiji Song , Xuran Pan , Yitong Xia , Cheng Wu