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Data sparsity is an inherent challenge in the recommender systems, where most of the data is collected from the implicit feedbacks of users. This causes two difficulties in designing effective algorithms: first, the majority of users only…

Information Retrieval · Computer Science 2020-07-15 Wenhui Yu , Xiao Lin , Junfeng Ge , Wenwu Ou , Zheng Qin

Unsupervised domain adaptation (UDA) is a pivotal form in machine learning to extend the in-domain model to the distinctive target domains where the data distributions differ. Most prior works focus on capturing the inter-domain…

Computer Vision and Pattern Recognition · Computer Science 2023-10-30 Zhiqing Xiao , Haobo Wang , Ying Jin , Lei Feng , Gang Chen , Fei Huang , Junbo Zhao

Sparse linear regression is a central problem in high-dimensional statistics. We study the correlated random design setting, where the covariates are drawn from a multivariate Gaussian $N(0,\Sigma)$, and we seek an estimator with small…

Data Structures and Algorithms · Computer Science 2023-05-29 Jonathan Kelner , Frederic Koehler , Raghu Meka , Dhruv Rohatgi

Unsupervised domain adaptation (uDA) models focus on pairwise adaptation settings where there is a single, labeled, source and a single target domain. However, in many real-world settings one seeks to adapt to multiple, but somewhat…

Computer Vision and Pattern Recognition · Computer Science 2018-10-30 Behnam Gholami , Pritish Sahu , Ognjen Rudovic , Konstantinos Bousmalis , Vladimir Pavlovic

Unsupervised Domain Adaptation (UDA) has attracted a lot of attention in the last ten years. The emergence of Domain Invariant Representations (IR) has improved drastically the transferability of representations from a labelled source…

Machine Learning · Computer Science 2020-06-25 Victor Bouvier , Philippe Very , Clément Chastagnol , Myriam Tami , Céline Hudelot

Domain adaptation (DA) aims to alleviate the domain shift between source domain and target domain. Most DA methods require access to the source data, but often that is not possible (e.g. due to data privacy or intellectual property). In…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Shiqi Yang , Yaxing Wang , Joost van de Weijer , Luis Herranz , Shangling Jui

Traditional intelligent fault diagnosis of rolling bearings work well only under a common assumption that the labeled training data (source domain) and unlabeled testing data (target domain) are drawn from the same distribution. When the…

Sound · Computer Science 2017-08-01 Bo Zhang , Wei Li , Zhe Tong , Meng Zhang

The practical application of structural health monitoring (SHM) is often limited by the availability of labelled data. Transfer learning - specifically in the form of domain adaptation (DA) - gives rise to the possibility of leveraging…

Machine Learning · Computer Science 2022-05-25 Jack Poole , Paul Gardner , Nikolaos Dervilis , Lawrence Bull , Keith Worden

Semi-supervised domain adaptation (SSDA) is quite a challenging problem requiring methods to overcome both 1) overfitting towards poorly annotated data and 2) distribution shift across domains. Unfortunately, a simple combination of domain…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Can Qin , Lichen Wang , Qianqian Ma , Yu Yin , Huan Wang , Yun Fu

Sparse Inverse Covariance Estimation (SICE) is useful in many practical data analyses. Recovering the connectivity, non-connectivity graph of covariates is classified amongst the most important data mining and learning problems. In this…

Machine Learning · Computer Science 2019-04-05 Ashkan Esmaeili , Farokh Marvasti

The standard closed-set domain adaptation approaches seek to mitigate distribution discrepancies between two domains under the constraint of both sharing identical label sets. However, in realistic scenarios, finding an optimal source…

Machine Learning · Computer Science 2022-12-06 Sandipan Choudhuri , Suli Adeniye , Arunabha Sen , Hemanth Venkateswara

Unsupervised domain adaptation is critical to many real-world applications where label information is unavailable in the target domain. In general, without further assumptions, the joint distribution of the features and the label is not…

Machine Learning · Computer Science 2025-01-07 Lingjing Kong , Shaoan Xie , Weiran Yao , Yujia Zheng , Guangyi Chen , Petar Stojanov , Victor Akinwande , Kun Zhang

Current supervised learning models cannot generalize well across domain boundaries, which is a known problem in many applications, such as robotics or visual classification. Domain adaptation methods are used to improve these generalization…

Machine Learning · Computer Science 2020-07-09 Christoph Raab , Frank-Michael Schleif

Vanilla unsupervised domain adaptation methods tend to optimize the model with fixed neural architecture, which is not very practical in real-world scenarios since the target data is usually processed by different resource-limited devices.…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Rang Meng , Weijie Chen , Shicai Yang , Jie Song , Luojun Lin , Di Xie , Shiliang Pu , Xinchao Wang , Mingli Song , Yueting Zhuang

Unsupervised Domain Adaptation (UDA) aims to bridge the gap between a source domain, where labelled data are available, and a target domain only represented with unlabelled data. If domain invariant representations have dramatically…

Machine Learning · Computer Science 2020-12-04 Victor Bouvier , Philippe Very , Clément Chastagnol , Myriam Tami , Céline Hudelot

High-dimensional multivariate time series are common in many scientific and industrial applications, where the interest lies in identifying key dependence structure within the data for subsequent analysis tasks, such as forecasting. An…

Methodology · Statistics 2025-12-15 Madeline A. Shelley , Chiara Boetti , Marina I. Knight , Matthew A. Nunes

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

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

Learning domain-invariant representations has become a popular approach to unsupervised domain adaptation and is often justified by invoking a particular suite of theoretical results. We argue that there are two significant flaws in such…

Machine Learning · Statistics 2019-07-05 Fredrik D. Johansson , David Sontag , Rajesh Ranganath

Semantic segmentation with dense pixel-wise annotation has achieved excellent performance thanks to deep learning. However, the generalization of semantic segmentation in the wild remains challenging. In this paper, we address the problem…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 Wei Zhou , Yukang Wang , Jiajia Chu , Jiehua Yang , Xiang Bai , Yongchao Xu