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Non-hierarchical sparse attention Transformer-based models, such as Longformer and Big Bird, are popular approaches to working with long documents. There are clear benefits to these approaches compared to the original Transformer in terms…

计算与语言 · 计算机科学 2022-10-12 Ilias Chalkidis , Xiang Dai , Manos Fergadiotis , Prodromos Malakasiotis , Desmond Elliott

We propose TimeHUT, a novel method for learning time-series representations by hierarchical uniformity-tolerance balancing of contrastive representations. Our method uses two distinct losses to learn strong representations with the aim of…

机器学习 · 计算机科学 2025-10-06 Amin Jalali , Milad Soltany , Michael Greenspan , Ali Etemad

Domain Adaptation (DA) aims to leverage the knowledge learned from a source domain with ample labeled data to a target domain with unlabeled data only. Most existing studies on DA contribute to learning domain-invariant feature…

计算机视觉与模式识别 · 计算机科学 2022-10-04 Xiyu Wang , Pengxin Guo , Yu Zhang

In this work, we investigate unsupervised representation learning on medical time series, which bears the promise of leveraging copious amounts of existing unlabeled data in order to eventually assist clinical decision making. By evaluating…

机器学习 · 计算机科学 2018-12-04 Xinrui Lyu , Matthias Hueser , Stephanie L. Hyland , George Zerveas , Gunnar Raetsch

Tables are widely used with various structures to organize and present data. Recent attempts on table understanding mainly focus on relational tables, yet overlook to other common table structures. In this paper, we propose TUTA, a unified…

信息检索 · 计算机科学 2021-07-21 Zhiruo Wang , Haoyu Dong , Ran Jia , Jia Li , Zhiyi Fu , Shi Han , Dongmei Zhang

Inductive representation learning on temporal graphs is an important step toward salable machine learning on real-world dynamic networks. The evolving nature of temporal dynamic graphs requires handling new nodes as well as capturing…

机器学习 · 计算机科学 2020-02-20 Da Xu , Chuanwei Ruan , Evren Korpeoglu , Sushant Kumar , Kannan Achan

Tabular data is the most widely used data format in machine learning (ML). While tree-based methods outperform DL-based methods in supervised learning, recent literature reports that self-supervised learning with Transformer-based models…

机器学习 · 计算机科学 2023-05-23 Soma Onishi , Shoya Meguro

Compressed Neural Networks have the potential to enable deep learning across new applications and smaller computational environments. However, understanding the range of learning tasks in which such models can succeed is not well studied.…

机器学习 · 计算机科学 2023-08-10 Matt Gorbett , Hossein Shirazi , Indrakshi Ray

Transformers have become the dominant architecture for sequence modeling tasks such as natural language processing or audio processing, and they are now even considered for tasks that are not naturally sequential such as image…

机器学习 · 计算机科学 2024-03-05 Jorg Bornschein , Yazhe Li , Amal Rannen-Triki

The estimation of time-varying quantities is a fundamental component of decision making in fields such as healthcare and finance. However, the practical utility of such estimates is limited by how accurately they quantify predictive…

机器学习 · 计算机科学 2022-06-29 Alexandre Drouin , Étienne Marcotte , Nicolas Chapados

Modern large language models (LLMs) excel at tasks that require storing and retrieving knowledge, such as factual recall and question answering. Transformers are central to this capability because they can encode information during training…

机器学习 · 统计学 2026-03-18 Nuri Mert Vural , Alberto Bietti , Mahdi Soltanolkotabi , Denny Wu

Tabular data is a fundamental form of data structure. The evolution of table analysis tools reflects humanity's continuous progress in data acquisition, management, and processing. The dynamic changes in table columns arise from…

人工智能 · 计算机科学 2026-01-28 Xinda Chen , Zhen Xing , Hanyu Zhang , Weimin Tan , Bo Yan

The Transformer self-attention network has recently shown promising performance as an alternative to recurrent neural networks (RNNs) in end-to-end (E2E) automatic speech recognition (ASR) systems. However, the Transformer has a drawback in…

音频与语音处理 · 电气工程与系统科学 2019-10-17 Emiru Tsunoo , Yosuke Kashiwagi , Toshiyuki Kumakura , Shinji Watanabe

We propose a new model based on the deconvolutional networks and SAX discretization to learn the representation for multivariate time series. Deconvolutional networks fully exploit the advantage the powerful expressiveness of deep neural…

机器学习 · 计算机科学 2016-12-04 Zhiguang Wang , Wei Song , Lu Liu , Fan Zhang , Junxiao Xue , Yangdong Ye , Ming Fan , Mingliang Xu

Time Series Classification (TSC) has been an important and challenging task in data mining, especially on multivariate time series and multi-view time series data sets. Meanwhile, transfer learning has been widely applied in computer vision…

机器学习 · 计算机科学 2019-10-18 Donglin Zhan , Shiyu Yi , Dongli Xu , Xiao Yu , Denglin Jiang , Siqi Yu , Haoting Zhang , Wenfang Shangguan , Weihua Zhang

While convolutional neural networks have shown a tremendous impact on various computer vision tasks, they generally demonstrate limitations in explicitly modeling long-range dependencies due to the intrinsic locality of the convolution…

计算机视觉与模式识别 · 计算机科学 2021-08-06 Guanglei Yang , Hao Tang , Mingli Ding , Nicu Sebe , Elisa Ricci

The usage of transformers has grown from learning about language semantics to forming meaningful visiolinguistic representations. These architectures are often over-parametrized, requiring large amounts of computation. In this work, we…

计算与语言 · 计算机科学 2020-07-09 Prajjwal Bhargava

Tabular data is prevalent in many critical domains, yet it is often challenging to acquire in large quantities. This scarcity usually results in poor performance of machine learning models on such data. Data augmentation, a common strategy…

机器学习 · 计算机科学 2024-07-30 Andrei Margeloiu , Adrián Bazaga , Nikola Simidjievski , Pietro Liò , Mateja Jamnik

Representation learning is a critical ingredient for natural language processing systems. Recent Transformer language models like BERT learn powerful textual representations, but these models are targeted towards token- and sentence-level…

计算与语言 · 计算机科学 2020-05-21 Arman Cohan , Sergey Feldman , Iz Beltagy , Doug Downey , Daniel S. Weld

Although numerous recent tracking approaches have made tremendous advances in the last decade, achieving high-performance visual tracking remains a challenge. In this paper, we propose an end-to-end network model to learn reinforced…

计算机视觉与模式识别 · 计算机科学 2020-01-03 Peng Gao , Qiquan Zhang , Fei Wang , Liyi Xiao , Hamido Fujita , Yan Zhang