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Time Series Generation (TSG) has emerged as a pivotal technique in synthesizing data that accurately mirrors real-world time series, becoming indispensable in numerous applications. Despite significant advancements in TSG, its efficacy…

Machine Learning · Computer Science 2024-03-07 Yifan Bao , Yihao Ang , Qiang Huang , Anthony K. H. Tung , Zhiyong Huang

Generative models are undoubtedly a hot topic in Artificial Intelligence, among which the most common type is Generative Adversarial Networks (GANs). These architectures let one synthesise artificial datasets by implicitly modelling the…

Machine Learning · Computer Science 2020-07-07 Francisco J. Ibarrola , Nishant Ravikumar , Alejandro F. Frangi

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…

Instrumentation and Methods for Astrophysics · Physics 2022-08-17 Germán García-Jara , Pavlos Protopapas , Pablo A. Estévez

Generative Adversarial Networks (GANs) are powerful generative models that achieved strong results, mainly in the image domain. However, the training of GANs is not trivial, presenting some challenges tackled by different strategies.…

Neural and Evolutionary Computing · Computer Science 2021-02-26 Victor Costa , Nuno Lourenço , João Correia , Penousal Machado

Generative Adversarial Networks (GANs) have a great performance in image generation, but they need a large scale of data to train the entire framework, and often result in nonsensical results. We propose a new method referring to…

Machine Learning · Computer Science 2018-11-07 Jinxuan Sun , Guoqiang Zhong , Yang Chen , Yongbin Liu , Tao Li , Zhongwen Guo

Accurately predicting pedestrian trajectories is crucial in applications such as autonomous driving or service robotics, to name a few. Deep generative models achieve top performance in this task, assuming enough labelled trajectories are…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Mirko Zaffaroni , Federico Signoretta , Marco Grangetto , Attilio Fiandrotti

Text-to-image synthesis has recently seen significant progress thanks to large pretrained language models, large-scale training data, and the introduction of scalable model families such as diffusion and autoregressive models. However, the…

Machine Learning · Computer Science 2023-01-24 Axel Sauer , Tero Karras , Samuli Laine , Andreas Geiger , Timo Aila

Insufficient training data is a major bottleneck for most deep learning practices, not least in medical imaging where data is difficult to collect and publicly available datasets are scarce due to ethics and privacy. This work investigates…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Gabriel Eilertsen , Apostolia Tsirikoglou , Claes Lundström , Jonas Unger

Creating synthetic voices with found data is challenging, as real-world recordings often contain various types of audio degradation. One way to address this problem is to pre-enhance the speech with an enhancement model and then use the…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-03 Yusheng Tian , Wei Liu , Tan Lee

Clinical data usually cannot be freely distributed due to their highly confidential nature and this hampers the development of machine learning in the healthcare domain. One way to mitigate this problem is by generating realistic synthetic…

Data-hunger and data-imbalance are two major pitfalls in many deep learning approaches. For example, on highly optimized production lines, defective samples are hardly acquired while non-defective samples come almost for free. The defects…

Computer Vision and Pattern Recognition · Computer Science 2023-02-17 Ruyu Wang , Sabrina Hoppe , Eduardo Monari , Marco F. Huber

Generative Adversarial Networks (GANs) have gained a lot of attention from machine learning community due to their ability to learn and mimic an input data distribution. GANs consist of a discriminator and a generator working in tandem…

Computation and Language · Computer Science 2018-06-19 Saurabh Sahu , Rahul Gupta , Carol Espy-Wilson

Generative Adversarial Networks (GANs) have shown considerable promise for mitigating the challenge of data scarcity when building machine learning-driven analysis algorithms. Specifically, a number of studies have shown that GAN-based…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Xiaodan Hu , Audrey G. Chung , Paul Fieguth , Farzad Khalvati , Masoom A. Haider , Alexander Wong

Simulating realistic time-domain observations of gravitational waves (GWs) and GW detector glitches can help in advancing GW data analysis. Simulated data can be used in downstream tasks by augmenting datasets for signal searches, balancing…

Instrumentation and Detectors · Physics 2025-10-23 Tom Dooney , Lyana Curier , Daniel Tan , Melissa Lopez , Chris Van Den Broeck , Stefano Bromuri

The finance industry is producing an increasing amount of datasets that investment professionals can consider to be influential on the price of financial assets. These datasets were initially mainly limited to exchange data, namely price,…

Computational Finance · Quantitative Finance 2024-05-16 Matteo Rizzato , Julien Wallart , Christophe Geissler , Nicolas Morizet , Noureddine Boumlaik

In biomedical image analysis, the applicability of deep learning methods is directly impacted by the quantity of image data available. This is due to deep learning models requiring large image datasets to provide high-level performance.…

Machine Learning · Computer Science 2023-08-14 Muhammad Muneeb Saad , Ruairi O'Reilly , Mubashir Husain Rehmani

Generative Adversarial Networks (GANs) have been used in many different applications to generate realistic synthetic data. We introduce a novel GAN with Autoencoder (GAN-AE) architecture to generate synthetic samples for variable length,…

Machine Learning · Computer Science 2022-10-10 Stephanie Ger , Yegna Subramanian Jambunath , Diego Klabjan

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

Training generative adversarial networks (GAN) using too little data typically leads to discriminator overfitting, causing training to diverge. We propose an adaptive discriminator augmentation mechanism that significantly stabilizes…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Tero Karras , Miika Aittala , Janne Hellsten , Samuli Laine , Jaakko Lehtinen , Timo Aila

While data sharing is crucial for knowledge development, privacy concerns and strict regulation (e.g., European General Data Protection Regulation (GDPR)) unfortunately limit its full effectiveness. Synthetic tabular data emerges as an…

Machine Learning · Computer Science 2021-06-02 Zilong Zhao , Aditya Kunar , Hiek Van der Scheer , Robert Birke , Lydia Y. Chen