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We consider the problem of unsupervised domain adaptation for image classification. To learn target-domain-aware features from the unlabeled data, we create a self-supervised pretext task by augmenting the unlabeled data with a certain type…

计算机视觉与模式识别 · 计算机科学 2020-10-16 L. Xiao , J. Xu , D. Zhao , Z. Wang , L. Wang , Y. Nie , B. Dai

By leveraging data from a fully labeled source domain, unsupervised domain adaptation (UDA) improves classification performance on an unlabeled target domain through explicit discrepancy minimization of data distribution or adversarial…

计算机视觉与模式识别 · 计算机科学 2021-12-06 Shengjia Zhang , Tiancheng Lin , Yi Xu

Unsupervised and self-supervised learning methods have leveraged unlabelled data to improve the pretrained models. However, these methods need significantly large amount of unlabelled data and the computational cost of training models with…

计算与语言 · 计算机科学 2022-04-04 Utkarsh Chauhan , Vikas Joshi , Rupesh R. Mehta

In this paper, we propose a unified pre-training approach called UniSpeech to learn speech representations with both unlabeled and labeled data, in which supervised phonetic CTC learning and phonetically-aware contrastive self-supervised…

计算与语言 · 计算机科学 2021-06-11 Chengyi Wang , Yu Wu , Yao Qian , Kenichi Kumatani , Shujie Liu , Furu Wei , Michael Zeng , Xuedong Huang

Recent progress in singing voice separation has primarily focused on supervised deep learning methods. However, the scarcity of ground-truth data with clean musical sources has been a problem for long. Given a limited set of labeled data,…

音频与语音处理 · 电气工程与系统科学 2021-02-17 Zhepei Wang , Ritwik Giri , Umut Isik , Jean-Marc Valin , Arvindh Krishnaswamy

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…

机器学习 · 计算机科学 2019-11-20 Qian Wang , Toby P. Breckon

Most few-shot learning techniques are pre-trained on a large, labeled "base dataset". In problem domains where such large labeled datasets are not available for pre-training (e.g., X-ray, satellite images), one must resort to pre-training…

计算机视觉与模式识别 · 计算机科学 2021-03-18 Cheng Perng Phoo , Bharath Hariharan

Domain adaptive semantic segmentation is recognized as a promising technique to alleviate the domain shift between the labeled source domain and the unlabeled target domain in many real-world applications, such as automatic pilot. However,…

计算机视觉与模式识别 · 计算机科学 2021-10-14 Fuming You , Jingjing Li , Lei Zhu , Ke Lu , Zhi Chen , Zi Huang

We propose an approach for pre-training speech representations via a masked reconstruction loss. Our pre-trained encoder networks are bidirectional and can therefore be used directly in typical bidirectional speech recognition models. The…

音频与语音处理 · 电气工程与系统科学 2020-05-07 Weiran Wang , Qingming Tang , Karen Livescu

Unsupervised pre-training has led to much recent progress in natural language understanding. In this paper, we study self-training as another way to leverage unlabeled data through semi-supervised learning. To obtain additional data for a…

计算与语言 · 计算机科学 2020-10-06 Jingfei Du , Edouard Grave , Beliz Gunel , Vishrav Chaudhary , Onur Celebi , Michael Auli , Ves Stoyanov , Alexis Conneau

In semi-supervised representation learning frameworks, when the number of labelled data is very scarce, the quality and representativeness of these samples become increasingly important. Existing literature on semi-supervised learning…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Shuvendu Roy , Ali Etemad

The performance of automatic speech recognition (ASR) systems typically degrades significantly when the training and test data domains are mismatched. In this paper, we show that self-training (ST) combined with an uncertainty-based…

计算与语言 · 计算机科学 2021-02-17 Sameer Khurana , Niko Moritz , Takaaki Hori , Jonathan Le Roux

Active learning is an iterative labeling process that is used to obtain a small labeled subset, despite the absence of labeled data, thereby enabling to train a model for supervised tasks such as text classification. While active learning…

计算与语言 · 计算机科学 2024-10-07 Christopher Schröder , Gerhard Heyer

Self-training is one of the earliest and simplest semi-supervised methods. The key idea is to augment the original labeled dataset with unlabeled data paired with the model's prediction (i.e. the pseudo-parallel data). While self-training…

机器学习 · 计算机科学 2020-10-20 Junxian He , Jiatao Gu , Jiajun Shen , Marc'Aurelio Ranzato

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…

机器学习 · 计算机科学 2022-05-12 Antonio-Javier Gallego , Jorge Calvo-Zaragoza , Robert B. Fisher

We investigate the utility of in-domain self-supervised pre-training of vision models in the analysis of remote sensing imagery. Self-supervised learning (SSL) has emerged as a promising approach for remote sensing image classification due…

计算机视觉与模式识别 · 计算机科学 2024-02-06 Ivica Dimitrovski , Ivan Kitanovski , Nikola Simidjievski , Dragi Kocev

Pre-trained code models have recently achieved substantial improvements in many code intelligence tasks. These models are first pre-trained on large-scale unlabeled datasets in a task-agnostic manner using self-supervised learning, and then…

软件工程 · 计算机科学 2024-01-11 Shuzheng Gao , Wenxin Mao , Cuiyun Gao , Li Li , Xing Hu , Xin Xia , Michael R. Lyu

Unsupervised domain adaptation aims to transfer knowledge from a labeled source domain to an unlabeled target domain. Previous methods focus on learning domain-invariant features to decrease the discrepancy between the feature distributions…

机器学习 · 计算机科学 2021-06-30 Yuntao Du , Yinghao Chen , Fengli Cui , Xiaowen Zhang , Chongjun Wang

Deep neural networks excel at learning from labeled data and achieve state-of-the-art resultson a wide array of Natural Language Processing tasks. In contrast, learning from unlabeled data, especially under domain shift, remains a…

计算与语言 · 计算机科学 2020-10-29 Alan Ramponi , Barbara Plank

In the development of neural text-to-speech systems, model pre-training with a large amount of non-target speakers' data is a common approach. However, in terms of ultimately achieved system performance for target speaker(s), the actual…

音频与语音处理 · 电气工程与系统科学 2021-10-11 Guangyan Zhang , Yichong Leng , Daxin Tan , Ying Qin , Kaitao Song , Xu Tan , Sheng Zhao , Tan Lee