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It has been demonstrated that the amount of data is crucial in data-driven machine learning methods. Data is always valuable, but in some tasks, it is almost like gold. This occurs in engineering areas where data is scarce or very expensive…

Artificial Intelligence · Computer Science 2023-12-12 David Solis-Martin , Juan Galan-Paez , Joaquin Borrego-Diaz

Synthetic data generation is an appealing tool for augmenting and enriching datasets, playing a crucial role in advancing artificial intelligence (AI) and machine learning (ML). Not only does synthetic data help build robust AI/ML datasets…

Systems and Control · Electrical Eng. & Systems 2026-03-20 José Pulido , Francesc Wilhelmi , Sergio Fortes , Alfonso Fernández-Durán , Lorenzo Galati Giordano , Raquel Barco

Financial time series simulation is a central topic since it extends the limited real data for training and evaluation of trading strategies. It is also challenging because of the complex statistical properties of the real financial data.…

Statistical Finance · Quantitative Finance 2022-07-04 Weilong Fu , Ali Hirsa , Jörg Osterrieder

In recent years, financial institutions and firms have increasingly adopted synthetic data to address data scarcity and to generate counterfactual market scenarios. However, reproducing all the statistical properties of financial time…

Machine Learning · Computer Science 2026-05-27 Giuseppe Masi , Andrea Coletta , Novella Bartolini

The success of deep learning-based generative models in producing realistic images, videos, and audios has led to a crucial consideration: how to effectively assess the quality of synthetic samples. While the Fr\'{e}chet Inception Distance…

Machine Learning · Computer Science 2024-03-12 Yang Chen , Dustin J. Kempton , Rafal A. Angryk

Financial time series often exhibit low signal-to-noise ratio, posing significant challenges for accurate data interpretation and prediction and ultimately decision making. Generative models have gained attention as powerful tools for…

Machine Learning · Computer Science 2024-09-05 Zhuohan Wang , Carmine Ventre

This article studies the financial time series data processing for machine learning. It introduces the most frequent scaling methods, then compares the resulting stationarity and preservation of useful information for trend forecasting. It…

Statistical Finance · Quantitative Finance 2019-07-09 Fabrice Daniel

With the rising adoption of Machine Learning across the domains like banking, pharmaceutical, ed-tech, etc, it has become utmost important to adopt responsible AI methods to ensure models are not unfairly discriminating against any group.…

Machine Learning · Computer Science 2022-12-02 Bhushan Chaudhari , Himanshu Chaudhary , Aakash Agarwal , Kamna Meena , Tanmoy Bhowmik

Synthetic data generation overcomes limitations of real-world machine learning. Traditional methods are valuable for augmenting costly datasets but only optimize one criterion: realism. In this paper, we tackle the problem of generating…

Machine Learning · Computer Science 2021-11-16 Chance N DeSmet , Diane J Cook

Current generative networks are increasingly proficient in generating high-resolution realistic images. These generative networks, especially the conditional ones, can potentially become a great tool for providing new image datasets. This…

Computer Vision and Pattern Recognition · Computer Science 2019-11-11 Victor Besnier , Himalaya Jain , Andrei Bursuc , Matthieu Cord , Patrick Pérez

Synthetic data is an emerging technology that can significantly accelerate the development and deployment of AI machine learning pipelines. In this work, we develop high-fidelity time-series generators, the SigWGAN, by combining…

Machine Learning · Computer Science 2021-11-03 Hao Ni , Lukasz Szpruch , Marc Sabate-Vidales , Baoren Xiao , Magnus Wiese , Shujian Liao

Generative Artificial Intelligence (AI) has rapidly become a powerful tool, capable of generating various types of data, such as images and text. However, despite the significant advancement of generative AI, time series generative AI…

Machine Learning · Computer Science 2025-07-01 Jaeyun Woo , Jiseok Lee , Brian Kenji Iwana

The use of synthetic data in machine learning applications and research offers many benefits, including performance improvements through data augmentation, privacy preservation of original samples, and reliable method assessment with fully…

Machine Learning · Computer Science 2026-04-13 Joanna Komorniczak

Data scarcity and the high cost of annotation have long been persistent challenges in the field of materials science. Inspired by its potential in other fields like computer vision, we propose the MatWheel framework, which train the…

Machine Learning · Computer Science 2025-04-15 Wentao Li , Yizhe Chen , Jiangjie Qiu , Xiaonan Wang

Synthetic time series are essential tools for data augmentation, stress testing, and algorithmic prototyping in quantitative finance. However, in cryptocurrency markets, characterized by 24/7 trading, extreme volatility, and rapid regime…

Statistical Finance · Quantitative Finance 2025-08-06 Yihao Ang , Qiang Wang , Qiang Huang , Yifan Bao , Xinyu Xi , Anthony K. H. Tung , Chen Jin , Zhiyong Huang

The generation of synthetic data is an essential tool to study complex systems, allowing for example to test models of these in precisely controlled settings, or to parametrize simulation models when data is missing. This paper focuses on…

Applications · Statistics 2019-11-25 Juste Raimbault

Generative modeling of time series is a central challenge in time series analysis, particularly under data-scarce conditions. Despite recent advances in generative modeling, a comprehensive understanding of how state-of-the-art generative…

Machine Learning · Computer Science 2025-05-28 Tal Gonen , Itai Pemper , Ilan Naiman , Nimrod Berman , Omri Azencot

The success of AI models relies on the availability of large, diverse, and high-quality datasets, which can be challenging to obtain due to data scarcity, privacy concerns, and high costs. Synthetic data has emerged as a promising solution…

Computation and Language · Computer Science 2024-08-13 Ruibo Liu , Jerry Wei , Fangyu Liu , Chenglei Si , Yanzhe Zhang , Jinmeng Rao , Steven Zheng , Daiyi Peng , Diyi Yang , Denny Zhou , Andrew M. Dai

Recent state-of-the-art forecasting methods are trained on collections of time series. These methods, often referred to as global models, can capture common patterns in different time series to improve their generalization performance.…

Machine Learning · Computer Science 2024-04-30 Vitor Cerqueira , Nuno Moniz , Ricardo Inácio , Carlos Soares

Financial time series (FTS) generation models are a core pillar to applications in finance. Risk management and portfolio optimization rely on realistic multivariate price generation models. Accordingly, there is a strong modelling…

Statistical Finance · Quantitative Finance 2024-12-10 Howard Caulfield , James P. Gleeson