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We present an empirical evaluation of fMRI data augmentation via synthesis. For synthesis we use generative mod-els trained on real neuroimaging data to produce novel task-dependent functional brain images. Analyzed generative mod-els…

Computer Vision and Pattern Recognition · Computer Science 2019-07-16 Peiye Zhuang , Alexander G. Schwing , Sanmi Koyejo

In this work, we propose a novel data augmentation method for clinical audio datasets based on a conditional Wasserstein Generative Adversarial Network with Gradient Penalty (cWGAN-GP), operating on log-mel spectrograms. To validate our…

Sound · Computer Science 2025-02-11 Matthias Seibold , Armando Hoch , Mazda Farshad , Nassir Navab , Philipp Fürnstahl

Electroencephalography (EEG) is an objective tool for emotion recognition and shows promising performance. However, the label scarcity problem is a main challenge in this field, which limits the wide application of EEG-based emotion…

Signal Processing · Electrical Eng. & Systems 2024-09-02 Rushuang Zhou , Weishan Ye , Zhiguo Zhang , Yanyang Luo , Li Zhang , Linling Li , Gan Huang , Yining Dong , Yuan-Ting Zhang , Zhen Liang

Generative adversarial networks (GANs) have shown potential in learning emotional attributes and generating new data samples. However, their performance is usually hindered by the unavailability of larger speech emotion recognition (SER)…

Sound · Computer Science 2020-07-28 Siddique Latif , Muhammad Asim , Rajib Rana , Sara Khalifa , Raja Jurdak , Björn W. Schuller

Despite significant recent progress in the area of Brain-Computer Interface (BCI), there are numerous shortcomings associated with collecting Electroencephalography (EEG) signals in real-world environments. These include, but are not…

Quantitative Methods · Quantitative Biology 2019-10-14 Nik Khadijah Nik Aznan , Amir Atapour-Abarghouei , Stephen Bonner , Jason Connolly , Noura Al Moubayed , Toby Breckon

Deep learning approaches deliver state-of-the-art performance in recognition of spatiotemporal human motion data. However, one of the main challenges in these recognition tasks is limited available training data. Insufficient training data…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Junxiao Shen , John Dudley , Per Ola Kristensson

In the ever-evolving landscape of social network advertising, the volume and accuracy of data play a critical role in the performance of predictive models. However, the development of robust predictive algorithms is often hampered by the…

Social and Information Networks · Computer Science 2024-11-13 Qikai Yang , Panfeng Li , Xinhe Xu , Zhicheng Ding , Wenjing Zhou , Yi Nian

Amyotrophic Lateral Sclerosis (ALS) is a rare neurodegenerative disease, and high-quality EEG data from ALS patients are scarce. This data scarcity, coupled with severe class imbalance between ALS and healthy control recordings, poses a…

Machine Learning · Computer Science 2025-06-23 Abdulvahap Mutlu , Şengül Doğan , Türker Tuncer

Deep learning models need a sufficient amount of data in order to be able to find the hidden patterns in it. It is the purpose of generative modeling to learn the data distribution, thus allowing us to sample more data and augment the…

Machine Learning · Computer Science 2024-11-28 José Fernando Núñez , Jamie Arjona , Javier Béjar

Through automation, deep learning (DL) can enhance the analysis of transesophageal echocardiography (TEE) images. However, DL methods require large amounts of high-quality data to produce accurate results, which is difficult to satisfy.…

Image and Video Processing · Electrical Eng. & Systems 2024-10-10 Emmanuel Oladokun , Musa Abdulkareem , Jurica Šprem , Vicente Grau

The confluence of ultrafast computers with large memory, rapid progress in Machine Learning (ML) algorithms, and the availability of large datasets place multiple engineering fields at the threshold of dramatic progress. However, a unique…

Machine Learning · Computer Science 2025-09-15 Farah Alsafadi , Mahmoud Yaseen , Xu Wu

Due to the data shortage problem, which is one of the major problems in the field of machine learning, the accuracy level of many applications remains well below the expected. It prevents researchers from producing new artificial…

Signal Processing · Electrical Eng. & Systems 2023-02-28 Okan Düzyel , Mehmet Kuntalp

ECG databases are usually highly imbalanced due to the abundance of Normal ECG and scarcity of abnormal cases. As such, deep learning classifiers trained on imbalanced datasets usually perform poorly, especially on minor classes. One…

Signal Processing · Electrical Eng. & Systems 2022-11-21 Edmond Adib , Fatemeh Afghah , John J. Prevost

Data augmentation is a valuable tool for the design of deep learning systems to overcome data limitations and stabilize the training process. Especially in the medical domain, where the collection of large-scale data sets is challenging and…

Machine Learning · Computer Science 2025-02-11 Mane Margaryan , Matthias Seibold , Indu Joshi , Mazda Farshad , Philipp Fürnstahl , Nassir Navab

The performance of generative adversarial networks (GANs) heavily deteriorates given a limited amount of training data. This is mainly because the discriminator is memorizing the exact training set. To combat it, we propose Differentiable…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Shengyu Zhao , Zhijian Liu , Ji Lin , Jun-Yan Zhu , Song Han

Time-series data are one of the fundamental types of raw data representation used in data-driven techniques. In machine condition monitoring, time-series vibration data are overly used in data mining for deep neural networks. Typically,…

Machine Learning · Computer Science 2022-01-14 Atik Faysal , Ngui Wai Keng , M. H. Lim

Accurate Computer-Assisted Diagnosis, associated with proper data wrangling, can alleviate the risk of overlooking the diagnosis in a clinical environment. Towards this, as a Data Augmentation (DA) technique, Generative Adversarial Networks…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Changhee Han , Kohei Murao , Tomoyuki Noguchi , Yusuke Kawata , Fumiya Uchiyama , Leonardo Rundo , Hideki Nakayama , Shin'ichi Satoh

Data scarcity remains a significant challenge in the field of emotion recognition using physiological signals, as acquiring comprehensive and diverse datasets is often prevented by privacy concerns and logistical constraints. This…

Neural and Evolutionary Computing · Computer Science 2025-01-29 S. Muhammad Hossein Mousavi

Electroencephalogram (EEG) data is crucial for diagnosing mental health conditions but is costly and time-consuming to collect at scale. Synthetic data generation offers a promising solution to augment datasets for machine learning…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Gideon Vos , Maryam Ebrahimpour , Liza van Eijk , Zoltan Sarnyai , Mostafa Rahimi Azghadi

Emotional Voice Conversion (EVC) aims to convert the emotional style of a source speech signal to a target style while preserving its content and speaker identity information. Previous emotional conversion studies do not disentangle…

Sound · Computer Science 2021-07-20 Xiangheng He , Junjie Chen , Georgios Rizos , Björn W. Schuller