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Machine learning algorithms typically assume that the training and test samples come from the same distributions, i.e., in-distribution. However, in open-world scenarios, streaming big data can be Out-Of-Distribution (OOD), rendering these…

Machine Learning · Computer Science 2022-11-10 Anique Tahir , Lu Cheng , Ruocheng Guo , Huan Liu

Training deep networks for semantic segmentation requires annotation of large amounts of data, which can be time-consuming and expensive. Unfortunately, these trained networks still generalize poorly when tested in domains not consistent…

Computer Vision and Pattern Recognition · Computer Science 2018-11-09 Kashyap Chitta , Jianwei Feng , Martial Hebert

Unsupervised domain adaptation aims to address the problem of classifying unlabeled samples from the target domain whilst labeled samples are only available from the source domain and the data distributions are different in these two…

Machine Learning · Computer Science 2019-11-20 Qian Wang , Toby P. Breckon

Deep networks are prone to performance degradation when there is a domain shift between the source (training) data and target (test) data. Recent test-time adaptation methods update batch normalization layers of pre-trained source models…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Wenyu Zhang , Li Shen , Wanyue Zhang , Chuan-Sheng Foo

Compared with shallow domain adaptation, recent progress in deep domain adaptation has shown that it can achieve higher predictive performance and stronger capacity to tackle structural data (e.g., image and sequential data). The underlying…

Machine Learning · Computer Science 2019-06-21 Trung Le , Khanh Nguyen , Nhat Ho , Hung Bui , Dinh Phung

In the context of supervised statistical learning, it is typically assumed that the training set comes from the same distribution that draws the test samples. When this is not the case, the behavior of the learned model is unpredictable and…

Machine Learning · Computer Science 2022-05-12 Antonio-Javier Gallego , Jorge Calvo-Zaragoza , Robert B. Fisher

The cost of large scale data collection and annotation often makes the application of machine learning algorithms to new tasks or datasets prohibitively expensive. One approach circumventing this cost is training models on synthetic data…

Computer Vision and Pattern Recognition · Computer Science 2016-08-23 Konstantinos Bousmalis , George Trigeorgis , Nathan Silberman , Dilip Krishnan , Dumitru Erhan

When only limited target domain data is available, domain adaptation could be used to promote performance of deep neural network (DNN) acoustic model by leveraging well-trained source model and target domain data. However, suffering from…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-06 Han Zhu , Jiangjiang Zhao , Yuling Ren , Li Wang , Pengyuan Zhang

Time series anomaly detection is a challenging task with a wide range of real-world applications. Due to label sparsity, training a deep anomaly detector often relies on unsupervised approaches. Recent efforts have been devoted to time…

Machine Learning · Computer Science 2023-04-18 Kwei-Herng Lai , Lan Wang , Huiyuan Chen , Kaixiong Zhou , Fei Wang , Hao Yang , Xia Hu

Domain Adaptation is an actively researched problem in Computer Vision. In this work, we propose an approach that leverages unsupervised data to bring the source and target distributions closer in a learned joint feature space. We…

Computer Vision and Pattern Recognition · Computer Science 2018-04-16 Swami Sankaranarayanan , Yogesh Balaji , Carlos D. Castillo , Rama Chellappa

This paper presents a novel multi-task learning-based method for unsupervised domain adaptation. Specifically, the source and target domain classifiers are jointly learned by considering the geometry of target domain and the divergence…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Jing Zhang , Wanqing Li , Philip Ogunbona

Domain adaptation seeks to mitigate the shift between training on the \emph{source} domain and testing on the \emph{target} domain. Most adaptation methods rely on the source data by joint optimization over source data and target data.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Dequan Wang , Shaoteng Liu , Sayna Ebrahimi , Evan Shelhamer , Trevor Darrell

Getting deep convolutional neural networks to perform well requires a large amount of training data. When the available labelled data is small, it is often beneficial to use transfer learning to leverage a related larger dataset (source) in…

Machine Learning · Computer Science 2021-10-26 Lukas Hedegaard Morsing , Omar Ali Sheikh-Omar , Alexandros Iosifidis

The recent success of deep neural networks relies on massive amounts of labeled data. For a target task where labeled data is unavailable, domain adaptation can transfer a learner from a different source domain. In this paper, we propose a…

Machine Learning · Computer Science 2017-02-17 Mingsheng Long , Han Zhu , Jianmin Wang , Michael I. Jordan

In contrast to a standard closed-set domain adaptation task, partial domain adaptation setup caters to a realistic scenario by relaxing the identical label set assumption. The fact of source label set subsuming the target label set,…

Machine Learning · Computer Science 2022-12-12 Sandipan Choudhuri , Hemanth Venkateswara , Arunabha Sen

Domain adaptation is a popular paradigm in modern machine learning which aims at tackling the problem of divergence (or shift) between the labeled training and validation datasets (source domain) and a potentially large unlabeled dataset…

Machine Learning · Computer Science 2023-11-10 Evgeny M Mirkes , Jonathan Bac , Aziz Fouché , Sergey V. Stasenko , Andrei Zinovyev , Alexander N. Gorban

We present a theoretical and algorithmic study of the multiple-source domain adaptation problem in the common scenario where the learner has access only to a limited amount of labeled target data, but where the learner has at disposal a…

Machine Learning · Computer Science 2020-11-02 Yishay Mansour , Mehryar Mohri , Jae Ro , Ananda Theertha Suresh , Ke Wu

Domain adaptation (DA) is the task of classifying an unlabeled dataset (target) using a labeled dataset (source) from a related domain. The majority of successful DA methods try to directly match the distributions of the source and target…

Machine Learning · Statistics 2018-03-22 Twan van Laarhoven , Elena Marchiori

Images seen during test time are often not from the same distribution as images used for learning. This problem, known as domain shift, occurs when training classifiers from object-centric internet image databases and trying to apply them…

Computer Vision and Pattern Recognition · Computer Science 2013-08-21 Erik Rodner , Judy Hoffman , Jeff Donahue , Trevor Darrell , Kate Saenko

Deep neural networks, trained with large amount of labeled data, can fail to generalize well when tested with examples from a \emph{target domain} whose distribution differs from the training data distribution, referred as the \emph{source…