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High-quality time series (TS) data are essential for ensuring TS model performance, rendering research on rating TS data quality indispensable. Existing methods have shown promising rating accuracy within individual domains, primarily by…

机器学习 · 计算机科学 2026-03-11 Shunyu Wu , Dan Li , Wenjie Feng , Haozheng Ye , Jian Lou , See-Kiong Ng

With promising empirical performance across a wide range of applications, synthetic data augmentation appears a viable solution to data scarcity and the demands of increasingly data-intensive models. Its effectiveness lies in expanding the…

机器学习 · 计算机科学 2026-02-02 Zixuan Wu , So Won Jeong , Yating Liu , Yeo Jin Jung , Claire Donnat

Existing data-driven methods rely on the extraction of static features from time series to approximate the material removal rate (MRR) of semiconductor manufacturing processes such as chemical mechanical polishing (CMP). However, this leads…

机器学习 · 计算机科学 2025-12-08 Jonathan Adam Rico , Nagarajan Raghavan , Senthilnath Jayavelu

A time-delay embedding (TDE), grounded in the framework of Takens's Theorem, provides a mechanism to represent and analyze the inherent dynamics of time-series data. Recently, topological data analysis (TDA) methods have been applied to…

统计方法学 · 统计学 2024-10-18 Sixtus Dakurah , Jessi Cisewski-Kehe

Real-world deployment of AI vision models is both fueled and limited by the data available for training and testing. Real datasets are sparse and uneven: long-tailed or unbalanced distributions hinder generalization, and the low number of…

计算机视觉与模式识别 · 计算机科学 2026-05-22 Valeria Pais , Malena Mendilaharzu , Daniele Faccio , Luis Oala , Christoph Clausen , Bruno Sanguinetti

Medical image classification is one of the most critical problems in the image recognition area. One of the major challenges in this field is the scarcity of labelled training data. Additionally, there is often class imbalance in datasets…

图像与视频处理 · 电气工程与系统科学 2022-09-29 Khushboo Mehra , Hassan Soliman , Soumya Ranjan Sahoo

Supervised training of an automated medical image analysis system often requires a large amount of expert annotations that are hard to collect. Moreover, the proportions of data available across different classes may be highly imbalanced…

计算机视觉与模式识别 · 计算机科学 2019-12-10 Yuan Xue , Jiarong Ye , Rodney Long , Sameer Antani , Zhiyun Xue , Xiaolei Huang

Time-series data presents limitations stemming from data quality issues, bias and vulnerabilities, and generalization problem. Integrating universal data synthesis methods holds promise in improving generalization. However, current methods…

机器学习 · 计算机科学 2024-02-02 Fanzhe Fu , Junru Chen , Jing Zhang , Carl Yang , Lvbin Ma , Yang Yang

Synthetic data generation is an important application of machine learning in the field of medical imaging. While existing approaches have successfully applied fine-tuned diffusion models for synthesizing medical images, we explore potential…

计算机视觉与模式识别 · 计算机科学 2024-10-04 Lakshmi Nair

Recent publications on automatic-speech-recognition (ASR) have a strong focus on attention encoder-decoder (AED) architectures which tend to suffer from over-fitting in low resource scenarios. One solution to tackle this issue is to…

计算与语言 · 计算机科学 2021-07-14 Nick Rossenbach , Mohammad Zeineldeen , Benedikt Hilmes , Ralf Schlüter , Hermann Ney

Temporal difference (TD) learning is a foundational algorithm in reinforcement learning (RL). For nearly forty years, TD learning has served as a workhorse for applied RL as well as a building block for more complex and specialized…

机器学习 · 计算机科学 2025-06-24 Hwanwoo Kim , Panos Toulis , Eric Laber

The advancement of Artificial Intelligence (AI) has created opportunities for e-learning, particularly in automated assessment systems that reduce educators' workload and provide timely feedback to students. However, developing effective…

计算机与社会 · 计算机科学 2025-02-11 Long Zhang , Meng Zhang , Wei Lin Wang , Yu Luo

Deep learning approaches are increasingly used to tackle forecasting tasks involving datasets with multiple univariate time series. A key factor in the successful application of these methods is a large enough training sample size, which is…

机器学习 · 计算机科学 2025-01-06 Vitor Cerqueira , Moisés Santos , Luis Roque , Yassine Baghoussi , Carlos Soares

Machine learning has the potential to assist many communities in using the large datasets that are becoming more and more available. Unfortunately, much of that potential is not being realized because it would require sharing data in a way…

机器学习 · 计算机科学 2018-07-02 James Jordon , Jinsung Yoon , Mihaela van der Schaar

Data scarcity and discontinuity are common occurrences in the healthcare and epidemiological dataset and often need help in forming an educative decision and forecasting the upcoming scenario. Often, these data are stored as monthly/yearly…

其他统计学 · 统计学 2023-04-25 Mahadee Al Mobin , Md. Kamrujjaman

Asynchronous Time Series is a multivariate time series where all the channels are observed asynchronously-independently, making the time series extremely sparse when aligning them. We often observe this effect in applications with complex…

机器学习 · 计算机科学 2022-08-25 Vijaya Krishna Yalavarthi , Johannes Burchert , Lars Schmidt-Thieme

Recent advances in deep learning have significantly increased the performance of face recognition systems. The performance and reliability of these models depend heavily on the amount and quality of the training data. However, the…

计算机视觉与模式识别 · 计算机科学 2018-02-19 Adam Kortylewski , Andreas Schneider , Thomas Gerig , Bernhard Egger , Andreas Morel-Forster , Thomas Vetter

Irregular sampling occurs in many time series modeling applications where it presents a significant challenge to standard deep learning models. This work is motivated by the analysis of physiological time series data in electronic health…

机器学习 · 计算机科学 2021-06-08 Satya Narayan Shukla , Benjamin M. Marlin

Temporally indexed data are essential in a wide range of fields and of interest to machine learning researchers. Time series data, however, are often scarce or highly sensitive, which precludes the sharing of data between researchers and…

机器学习 · 计算机科学 2024-07-10 Alexander Nikitin , Letizia Iannucci , Samuel Kaski

Realistic synthetic image data rendered from 3D models can be used to augment image sets and train image classification semantic segmentation models. In this work, we explore how high quality physically-based rendering and domain…

计算机视觉与模式识别 · 计算机科学 2022-12-14 Jason W. Anderson , Marcin Ziolkowski , Ken Kennedy , Amy W. Apon