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The use of synthetic data to deidentify data and to improve predictive models is well-attested to. The augmentation of datasets using synthetically generated data is an alluring proposition: in the best case, it generates realistic data…

统计方法学 · 统计学 2026-03-20 Reid Dale , Jordan Rodu , Mike Baiocchi

Timbre allows us to distinguish between sounds even when they share the same pitch and loudness, playing an important role in music, instrument recognition, and speech. Traditional approaches, such as frequency analysis or machine learning,…

声音 · 计算机科学 2026-02-05 Gakusei Sato , Hiroya Nakao , Riccardo Muolo

The potential of synthetic data to replace real data creates a huge demand for synthetic data in data-hungry AI. This potential is even greater when synthetic data is used for training along with a small number of real images from domains…

计算机视觉与模式识别 · 计算机科学 2024-08-28 Hyungtae Lee , Yan Zhang , Heesung Kwon , Shuvra S. Bhattacharrya

Dynamic texture (DT) exhibits statistical stationarity in the spatial domain and stochastic repetitiveness in the temporal dimension, indicating that different frames of DT possess a high similarity correlation that is critical prior…

计算机视觉与模式识别 · 计算机科学 2022-07-04 Shiming Chen , Peng Zhang , Guo-Sen Xie , Qinmu Peng , Zehong Cao , Wei Yuan , Xinge You

Data augmentation is a crucial component in training neural networks to overcome the limitation imposed by data size, and several techniques have been studied for time series. Although these techniques are effective in certain tasks, they…

机器学习 · 计算机科学 2025-01-22 Hyun Ryu , Sunjae Yoon , Hee Suk Yoon , Eunseop Yoon , Chang D. Yoo

Real-world time series typically exhibit complex temporal variations, making the time series classification task notably challenging. Recent advancements have demonstrated the potential of multi-scale analysis approaches, which provide an…

人工智能 · 计算机科学 2025-07-25 Zhipeng Liu , Peibo Duan , Binwu Wang , Xuan Tang , Qi Chu , Changsheng Zhang , Yongsheng Huang , Bin Zhang

Recent advances in deep learning have driven rapid progress in time series forecasting, yet many state-of-the-art models continue to struggle with robust performance in real-world applications, even when they achieve strong results on…

机器学习 · 计算机科学 2025-10-24 Qitai Tan , Yiyun Chen , Mo Li , Ruiwen Gu , Yilin Su , Xiao-Ping Zhang

This paper presents a method for selecting appropriate synthetic speech samples from a given large text-to-speech (TTS) dataset as supplementary training data for an automatic speech recognition (ASR) model. We trained a neural network,…

音频与语音处理 · 电气工程与系统科学 2023-06-05 Shuo Liu , Leda Sarı , Chunyang Wu , Gil Keren , Yuan Shangguan , Jay Mahadeokar , Ozlem Kalinli

Irregularly sampled time series (ISTS) data has irregular temporal intervals between observations and different sampling rates between sequences. ISTS commonly appears in healthcare, economics, and geoscience. Especially in the medical…

机器学习 · 计算机科学 2020-10-27 Chenxi Sun , Shenda Hong , Moxian Song , Hongyan Li

This paper addresses the challenge of overfitting in the learning of dynamical systems by introducing a novel approach for the generation of synthetic data, aimed at enhancing model generalization and robustness in scenarios characterized…

机器学习 · 计算机科学 2024-03-11 Dario Piga , Matteo Rufolo , Gabriele Maroni , Manas Mejari , Marco Forgione

Deep neural networks (DNNs) that tackle the time series classification (TSC) task have provided a promising framework in signal processing. In real-world applications, as a data-driven model, DNNs are suffered from insufficient data.…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Hao Zhang , Zhendong Pang , Jiangpeng Wang , Teng Li

Deep learning methods have achieved a lot of success in various applications involving converting wearable sensor data to actionable health insights. A common application areas is activity recognition, where deep-learning methods still…

信号处理 · 电气工程与系统科学 2024-07-09 Eun Som Jeon , Hongjun Choi , Ankita Shukla , Yuan Wang , Hyunglae Lee , Matthew P. Buman , Pavan Turaga

Deep learning approaches require enough training samples to perform well, but it is a challenge to collect enough real training data and label them manually. In this letter, we propose the use of realistic synthetic data with a wide…

计算机视觉与模式识别 · 计算机科学 2020-06-11 Weixing Liu , Jun Liu , Bin Luo

In many real-world application, e.g., speech recognition or sleep stage classification, data are captured over the course of time, constituting a Time-Series. Time-Series often contain temporal dependencies that cause two otherwise…

机器学习 · 计算机科学 2017-01-10 John Cristian Borges Gamboa

Deep Learning has seen an unprecedented increase in vision applications since the publication of large-scale object recognition datasets and introduction of scalable compute hardware. State-of-the-art methods for most vision tasks for…

计算机视觉与模式识别 · 计算机科学 2020-04-30 Nikita Jaipuria , Xianling Zhang , Rohan Bhasin , Mayar Arafa , Punarjay Chakravarty , Shubham Shrivastava , Sagar Manglani , Vidya N. Murali

Motivated by privacy concerns in long-term longitudinal studies in medical and social science research, we study the problem of continually releasing differentially private synthetic data from longitudinal data collections. We introduce a…

数据结构与算法 · 计算机科学 2024-05-28 Mark Bun , Marco Gaboardi , Marcel Neunhoeffer , Wanrong Zhang

Deep learning methods typically require vast amounts of training data to reach their full potential. While some publicly available datasets exists, domain specific data always needs to be collected and manually labeled, an expensive, time…

计算机视觉与模式识别 · 计算机科学 2019-02-27 Stefan Hinterstoisser , Olivier Pauly , Hauke Heibel , Martina Marek , Martin Bokeloh

The use of synthetic data has emerged as an essential tool in Magnetic Resonance Spectroscopy (MRS) research and applications, providing advantages for optimization of acquisition, software validation, deep learning applications, and…

Deep learning is now the gold standard in computer vision-based quality inspection systems. In order to detect defects, supervised learning is often utilized, but necessitates a large amount of annotated images, which can be costly:…

计算机视觉与模式识别 · 计算机科学 2021-07-23 Pierre Gutierrez , Maria Luschkova , Antoine Cordier , Mustafa Shukor , Mona Schappert , Tim Dahmen

Pre-training on time series poses a unique challenge due to the potential mismatch between pre-training and target domains, such as shifts in temporal dynamics, fast-evolving trends, and long-range and short-cyclic effects, which can lead…

机器学习 · 计算机科学 2022-10-18 Xiang Zhang , Ziyuan Zhao , Theodoros Tsiligkaridis , Marinka Zitnik