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Unsupervised disentangled representation learning is a long-standing problem in computer vision. This work proposes a novel framework for performing image clustering from deep embeddings by combining instance-level contrastive learning with…

Machine Learning · Computer Science 2021-10-05 Ramakrishnan Sundareswaran , Jansel Herrera-Gerena , John Just , Ali Jannesari

Recent studies have shown that Convolutional Neural Networks (CNNs) are vulnerable to a small perturbation of input called "adversarial examples". In this work, we propose a new feedforward CNN that improves robustness in the presence of…

Machine Learning · Computer Science 2016-02-26 Jonghoon Jin , Aysegul Dundar , Eugenio Culurciello

Speech representation and modelling in high-dimensional spaces of acoustic waveforms, or a linear transformation thereof, is investigated with the aim of improving the robustness of automatic speech recognition to additive noise. The…

Computation and Language · Computer Science 2015-03-31 Matthew Ager , Zoran Cvetkovic , Peter Sollich

This paper presents a novel version of the hypergraph neural network method. This method is utilized to solve the noisy label learning problem. First, we apply the PCA dimensional reduction technique to the feature matrices of the image…

Machine Learning · Statistics 2022-09-07 Nguyen Trinh Vu Dang , Loc Tran , Linh Tran

Intent Classification (IC) and Slot Labeling (SL) models, which form the basis of dialogue systems, often encounter noisy data in real-word environments. In this work, we investigate how robust IC/SL models are to noisy data. We collect and…

Computation and Language · Computer Science 2021-11-03 Sailik Sengupta , Jason Krone , Saab Mansour

In this work, we address the problem of unsupervised domain adaptation for person re-ID where annotations are available for the source domain but not for target. Previous methods typically follow a two-stage optimization pipeline, where the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Takashi Isobe , Dong Li , Lu Tian , Weihua Chen , Yi Shan , Shengjin Wang

Due to the lack of labels and the domain diversities, it is a challenge to study person re-identification in the cross-domain setting. An admirable method is to optimize the target model by assigning pseudo-labels for unlabeled samples…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Hongliang Zhang , Shoudong Han , Xiaofeng Pan , Jun Zhao

Data for face analysis often exhibit highly-skewed class distribution, i.e., most data belong to a few majority classes, while the minority classes only contain a scarce amount of instances. To mitigate this issue, contemporary deep…

Computer Vision and Pattern Recognition · Computer Science 2019-05-01 Chen Huang , Yining Li , Chen Change Loy , Xiaoou Tang

We present a new Self-Supervised Learning (SSL) approach to pre-train encoders on unlabeled audio data that reduces the need for large amounts of labeled data for audio and speech classification. Our primary aim is to learn audio…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-19 Ashish Seth , Sreyan Ghosh , S. Umesh , Dinesh Manocha

Speech emotion recognition systems (SER) can achieve high accuracy when the training and test data are identically distributed, but this assumption is frequently violated in practice and the performance of SER systems plummet against…

Sound · Computer Science 2020-07-28 Siddique Latif , Rajib Rana , Sara Khalifa , Raja Jurdak , Björn W. Schuller

Most recent self-supervised learning methods learn visual representation by contrasting different augmented views of images. Compared with supervised learning, more aggressive augmentations have been introduced to further improve the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Yingbin Bai , Erkun Yang , Zhaoqing Wang , Yuxuan Du , Bo Han , Cheng Deng , Dadong Wang , Tongliang Liu

The clustering methods have recently absorbed even-increasing attention in learning and vision. Deep clustering combines embedding and clustering together to obtain optimal embedding subspace for clustering, which can be more effective…

Machine Learning · Computer Science 2019-05-01 Xu Yang , Cheng Deng , Feng Zheng , Junchi Yan , Wei Liu

In this paper, we focus on unsupervised representation learning for clustering of images. Recent advances in deep clustering and unsupervised representation learning are based on the idea that different views of an input image (generated…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Aniket Anand Deshmukh , Jayanth Reddy Regatti , Eren Manavoglu , Urun Dogan

We focus on building robustness in the convolutions of neural visual classifiers, especially against natural perturbations like elastic deformations, occlusions and Gaussian noise. Existing CNNs show outstanding performance on clean images,…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Sadaf Gulshad , Ivan Sosnovik , Arnold Smeulders

We consider the learning from noisy labels (NL) problem which emerges in many real-world applications. In addition to the widely-studied synthetic noise in the NL literature, we also consider the pseudo labels in semi-supervised learning…

Computer Vision and Pattern Recognition · Computer Science 2019-09-13 Tsung Wei Tsai , Chongxuan Li , Jun Zhu

Robust learning from noisy demonstrations is a practical but highly challenging problem in imitation learning. In this paper, we first theoretically show that robust imitation learning can be achieved by optimizing a classification risk…

Machine Learning · Statistics 2021-02-22 Voot Tangkaratt , Nontawat Charoenphakdee , Masashi Sugiyama

Labor-intensive labeling becomes a bottleneck in developing computer vision algorithms based on deep learning. For this reason, dealing with imperfect labels has increasingly gained attention and has become an active field of study. We…

Computer Vision and Pattern Recognition · Computer Science 2024-01-10 Heewon Kim , Hyun Sung Chang , Kiho Cho , Jaeyun Lee , Bohyung Han

Speaker recognition performance has been greatly improved with the emergence of deep learning. Deep neural networks show the capacity to effectively deal with impacts of noise and reverberation, making them attractive to far-field speaker…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-28 Wenda Chen , Jonathan Huang , Tobias Bocklet

Rigid image alignment is a fundamental task in computer vision, while the traditional algorithms are either too sensitive to noise or time-consuming. Recent unsupervised image alignment methods developed based on spatial transformer…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Yu-Xuan Chen , Dagan Feng , Hong-Bin Shen

We study the problem of training named entity recognition (NER) models using only distantly-labeled data, which can be automatically obtained by matching entity mentions in the raw text with entity types in a knowledge base. The biggest…

Computation and Language · Computer Science 2021-09-13 Yu Meng , Yunyi Zhang , Jiaxin Huang , Xuan Wang , Yu Zhang , Heng Ji , Jiawei Han
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