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Contextual ranking models have delivered impressive performance improvements over classical models in the document ranking task. However, these highly over-parameterized models tend to be data-hungry and require large amounts of data even…

信息检索 · 计算机科学 2023-11-28 Abhijit Anand , Jurek Leonhardt , Jaspreet Singh , Koustav Rudra , Avishek Anand

Accurate spectrum prediction is crucial for dynamic spectrum access (DSA) and resource allocation. However, due to the unique characteristics of spectrum data, existing methods based on the time or frequency domain often struggle to…

机器学习 · 计算机科学 2025-08-26 Yanghao Qin , Bo Zhou , Guangliang Pan , Qihui Wu , Meixia Tao

Data augmentation is one of the most effective techniques for regularizing deep learning models and improving their recognition performance in a variety of tasks and domains. However, this holds for standard in-domain settings, in which the…

Data assimilation (DA) improves prediction of chaotic systems by combining model forecasts with sparse, noisy observations. Many DA methods are inherently probabilistic, but accurate probabilistic DA is often computationally expensive…

流体动力学 · 物理学 2026-04-24 Aditya Sai Pranith Ayapilla , Kazuya Miyashita , Yuki Yasuda , Ryo Onishi

Data augmentation (DA) has played a pivotal role in the success of deep speaker recognition. Current DA techniques primarily focus on speaker-preserving augmentation, which does not change the speaker trait of the speech and does not create…

声音 · 计算机科学 2024-06-12 Zhenyu Zhou , Shibiao Xu , Shi Yin , Lantian Li , Dong Wang

Data augmentation (DA) has gained widespread popularity in deep speaker models due to its ease of implementation and significant effectiveness. It enriches training data by simulating real-life acoustic variations, enabling deep neural…

声音 · 计算机科学 2024-02-07 Zhenyu Zhou , Junhui Chen , Namin Wang , Lantian Li , Dong Wang

Test-Time Adaptation (TTA) addresses domain shifts between training and testing. However, existing methods assume a homogeneous target domain (e.g., single domain) at any given time. They fail to handle the dynamic nature of real-world…

机器学习 · 计算机科学 2025-12-25 Chuyang Ye , Dongyan Wei , Zhendong Liu , Yuanyi Pang , Yixi Lin , Qinting Jiang , Jingyan Jiang , Dongbiao He

Data augmentation is an area of research which has seen active development in many machine learning fields, such as in image-based learning models, reinforcement learning for self driving vehicles, and general noise injection for point…

机器学习 · 计算机科学 2024-03-01 Prasad Cheema , Mahito Sugiyama

Advancements in conversational systems have revolutionized information access, surpassing the limitations of single queries. However, developing dialogue systems requires a large amount of training data, which is a challenge in low-resource…

计算与语言 · 计算机科学 2024-03-05 Heydar Soudani , Evangelos Kanoulas , Faegheh Hasibi

Neural networks are prone to learn easy solutions from superficial statistics in the data, namely shortcut learning, which impairs generalization and robustness of models. We propose a data augmentation strategy, named DFM-X, that leverages…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Shunxin Wang , Christoph Brune , Raymond Veldhuis , Nicola Strisciuglio

Data augmentation (DA) is indispensable in modern machine learning and deep neural networks. The basic idea of DA is to construct new training data to improve the model's generalization by adding slightly disturbed versions of existing data…

机器学习 · 计算机科学 2024-06-05 Chengtai Cao , Fan Zhou , Yurou Dai , Jianping Wang , Kunpeng Zhang

We propose a novel statistical method for testing the results of anomaly detection (AD) under domain adaptation (DA), which we call CAD-DA -- controllable AD under DA. The distinct advantage of the CAD-DA lies in its ability to control the…

机器学习 · 统计学 2023-10-24 Vo Nguyen Le Duy , Hsuan-Tien Lin , Ichiro Takeuchi

Data augmentation is an important facilitator of deep learning applications in the time series domain. A gap is identified in the literature, demonstrating sparse exploration of the transformer, the dominant sequence model, for data…

Transformer-based models, despite their promise for long-term time series forecasting (LTSF), suffer from an inherent low-pass filtering effect that limits their effectiveness. This issue arises due to undifferentiated propagation of…

机器学习 · 计算机科学 2026-01-23 Jingjing Bai , Yoshinobu Kawahara

Our study investigates the impact of data augmentation on the performance of multivariate time series models, focusing on datasets from the UCR archive. Despite the limited size of these datasets, we achieved classification accuracy…

机器学习 · 计算机科学 2024-06-11 Romain Ilbert , Thai V. Hoang , Zonghua Zhang

Currently, iTransformer is one of the most popular and effective models for multivariate time series (MTS) forecasting. Thanks to its inverted framework, iTransformer effectively captures multivariate correlation. However, the inverted…

机器学习 · 计算机科学 2025-07-17 Hongming Tan , Ting Chen , Ruochong Jin , Wai Kin Chan

Data augmentation (DA) encodes invariance and provides implicit regularization critical to a model's performance in image classification tasks. However, while DA improves average accuracy, recent studies have shown that its impact can be…

计算机视觉与模式识别 · 计算机科学 2024-01-04 Polina Kirichenko , Mark Ibrahim , Randall Balestriero , Diane Bouchacourt , Ramakrishna Vedantam , Hamed Firooz , Andrew Gordon Wilson

Context: Several approaches to estimate frequency, phase and amplitude errors in time series analyses were reported in the literature, but they are either time consuming to compute, grossly overestimating the error, or are based on…

天体物理学 · 物理学 2009-11-13 T. Kallinger , P. Reegen , W. W. Weiss

Unsupervised Data Augmentation (UDA) is a semi-supervised technique that applies a consistency loss to penalize differences between a model's predictions on (a) observed (unlabeled) examples; and (b) corresponding 'noised' examples produced…

计算与语言 · 计算机科学 2020-10-26 David Lowell , Brian E. Howard , Zachary C. Lipton , Byron C. Wallace

Sequential recommender systems have recently achieved significant performance improvements with the exploitation of deep learning (DL) based methods. However, although various DL-based methods have been introduced, most of them only focus…

信息检索 · 计算机科学 2022-03-29 Joo-yeong Song , Bongwon Suh