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Principal component analysis (PCA) is a foundational tool in modern data analysis, and a crucial step in PCA is selecting the number of components to keep. However, classical selection methods (e.g., scree plots, parallel analysis, etc.)…

Statistics Theory · Mathematics 2026-05-28 David Hong , Yue Sheng , Edgar Dobriban

Missing data in time series is a challenging issue affecting time series analysis. Missing data occurs due to problems like data drops or sensor malfunctioning. Imputation methods are used to fill in these values, with quality of imputation…

Machine Learning · Computer Science 2023-04-11 Karan Aggarwal , Jaideep Srivastava

Deep Neural Networks ( DNN s) are known to make overconfident mistakes, which makes their use problematic in safety-critical applications. State-of-the-art ( SOTA ) calibration techniques improve on the confidence of predicted labels alone…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ramya Hebbalaguppe , Jatin Prakash , Neelabh Madan , Chetan Arora

As a consequence of the high variability of load demand and renewable generation, long-term and high-resolution inputs are required for power system expansion planning, making the problem intractable in real-world applications. Time series…

Optimization and Control · Mathematics 2025-10-29 Ruiqi Zhang , Ensieh Sharifnia , Simon H. Tindemans

Deep neural networks have useful applications in many different tasks, however their performance can be severely affected by changes in the data distribution. For example, in the biomedical field, their performance can be affected by…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Pedro Vianna , Muawiz Chaudhary , Paria Mehrbod , An Tang , Guy Cloutier , Guy Wolf , Michael Eickenberg , Eugene Belilovsky

Supervised classification algorithms are used to solve a growing number of real-life problems around the globe. Their performance is strictly connected with the quality of labels used in training. Unfortunately, acquiring good-quality…

Machine Learning · Computer Science 2024-07-08 Daniel Kałuża , Andrzej Janusz , Dominik Ślęzak

Although mainstream unsupervised anomaly detection (AD) (including image-level classification and pixel-level segmentation)algorithms perform well in academic datasets, their performance is limited in practical application due to the ideal…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Chengjie Wang , Xi Jiang , Bin-Bin Gao , Zhenye Gan , Yong Liu , Feng Zheng , Lizhuang Ma

The measurement error of pulse times of arrival (TOAs) in the high S/N limit is dominated by the quasi-random variation of a pulsar's emission profile from rotation to rotation. Like measurement noise, this noise is only reduced as the…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 Matthew Kerr

Training a neural network with a large labeled dataset is still a dominant paradigm in computational histopathology. However, obtaining such exhaustive manual annotations is often expensive, laborious, and prone to inter and Intra-observer…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Chetan L. Srinidhi , Seung Wook Kim , Fu-Der Chen , Anne L. Martel

Recent advances in speech-aware language models have coupled strong acoustic encoders with large language models, enabling systems that move beyond transcription to produce richer outputs. Among these, word-level timestamp prediction is…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-28 Xulin Fan , Vishal Sunder , Samuel Thomas , Mark Hasegawa-Johnson , Brian Kingsbury , George Saon

Single-cell RNA sequencing (scRNA-seq) determines RNA expression at single-cell resolution. It provides a powerful tool for studying immunity, regulation, and other life activities of cells. However, due to the limitations of the sequencing…

Genomics · Quantitative Biology 2024-02-16 Linfeng Jiang , Yuan Zhu

Recent breakthroughs in singing voice synthesis (SVS) have heightened the demand for high-quality annotated datasets, yet manual annotation remains prohibitively labor-intensive and resource-intensive. Existing automatic singing annotation…

Sound · Computer Science 2025-07-10 Wenxiang Guo , Yu Zhang , Changhao Pan , Zhiyuan Zhu , Ruiqi Li , Zhetao Chen , Wenhao Xu , Fei Wu , Zhou Zhao

As agent capabilities advance, existing benchmarks, such as $\tau^2$-Bench, are becoming increasingly saturated. Yet constructing new benchmark tasks remains complex, costly, and labor-intensive. Moreover, the standard approach, in which…

Artificial Intelligence · Computer Science 2026-05-28 Tomer Keren , Nitay Calderon , Asaf Yehudai , Yotam Perlitz , Michal Shmueli-Scheuer , Roi Reichert

Multivariate time-series data are frequently observed in critical care settings and are typically characterized by sparsity (missing information) and irregular time intervals. Existing approaches for learning representations in this domain…

Machine Learning · Computer Science 2022-02-17 Sindhu Tipirneni , Chandan K. Reddy

Noise in data appears to be inevitable in most real-world machine learning applications and would cause severe overfitting problems. Not only can data features contain noise, but labels are also prone to be noisy due to human input. In this…

Machine Learning · Computer Science 2025-05-09 Weipeng Huang , Qin Li , Yang Xiao , Cheng Qiao , Tie Cai , Junwei Liang , Neil J. Hurley , Guangyuan Piao

Single-cell RNA sequencing (scRNAseq) is rapidly advancing our understanding of cellular composition within complex tissues and organisms. A major limitation in most scRNAseq analysis pipelines is the reliance on manual annotations to…

Genomics · Quantitative Biology 2022-06-10 A. Ali Heydari , Oscar A. Davalos , Katrina K. Hoyer , Suzanne S. Sindi

State-of-the-art (SOTA) gradient-based adversarial attacks on spiking neural networks (SNNs), which largely rely on extending FGSM and PGD frameworks, face a critical limitation: substantial attack latency from multi-timestep processing,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Donghwa Kang , Doohyun Kim , Sang-Ki Ko , Jinkyu Lee , Hyeongboo Baek , Brent ByungHoon Kang

Data augmentation serves as a popular regularization technique to combat overfitting challenges in neural networks. While automatic augmentation has demonstrated success in image classification tasks, its application to time-series…

Machine Learning · Computer Science 2025-06-19 Liran Nochumsohn , Omri Azencot

Analyzing dynamical data often requires information of the temporal labels, but such information is unavailable in many applications. Recovery of these temporal labels, closely related to the seriation or sequencing problem, becomes crucial…

Methodology · Statistics 2024-06-21 Yuehaw Khoo , Xin T. Tong , Wanjie Wang , Yuguan Wang

High annotation cost for training machine learning classifiers has driven extensive research in active learning and self-supervised learning. Recent research has shown that in the context of supervised learning different active learning…

Machine Learning · Computer Science 2023-06-08 Ziting Wen , Oscar Pizarro , Stefan Williams