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Compressed sensing (CS) shows that a signal having a sparse or compressible representation can be recovered from a small set of linear measurements. In classical CS theory, the sampling matrix and representation matrix are assumed to be…

Information Theory · Computer Science 2015-07-03 Yipeng Liu

Supervised dimensionality reduction strategies have been of great interest. However, current supervised dimensionality reduction approaches are difficult to scale for situations characterized by large datasets given the high computational…

Machine Learning · Computer Science 2018-11-09 Amir-Hossein Karimi , Alexander Wong , Ali Ghodsi

Compressive Sensing (CS) theory shows that a signal can be decoded from many fewer measurements than suggested by the Nyquist sampling theory, when the signal is sparse in some domain. Most of conventional CS recovery approaches, however,…

Computer Vision and Pattern Recognition · Computer Science 2014-04-30 Jian Zhang , Debin Zhao , Feng Jiang , Wen Gao

Convolutional Sparse Coding (CSC) is a well-established image representation model especially suited for image restoration tasks. In this work, we extend the applicability of this model by proposing a supervised approach to convolutional…

Computer Vision and Pattern Recognition · Computer Science 2018-04-10 Lama Affara , Bernard Ghanem , Peter Wonka

We propose a novel and unsupervised representation learning model, i.e., Robust Block-Diagonal Adaptive Locality-constrained Latent Representation (rBDLR). rBDLR is able to recover multi-subspace structures and extract the adaptive…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Zhao Zhang , Jiahuan Ren , Sheng Li , Richang Hong , Zhengjun Zha , Meng Wang

Classification methods based on sparse estimation have drawn much attention recently, due to their effectiveness in processing high-dimensional data such as images. In this paper, a method to improve the performance of a sparse…

Machine Learning · Statistics 2018-10-24 Babak Barazandeh , Mohammadhussein Rafieisakhaei , Sunwook Kim , Zhenyu , Kong , Maury A. Nussbaum

Learning a stable Linear Dynamical System (LDS) from data involves creating models that both minimize reconstruction error and enforce stability of the learned representation. We propose a novel algorithm for learning stable LDSs. Using a…

Machine Learning · Computer Science 2020-11-19 Giorgos Mamakoukas , Orest Xherija , T. D. Murphey

In a broad range of fields it may be desirable to reuse a supervised classification algorithm and apply it to a new data set. However, generalization of such an algorithm and thus achieving a similar classification performance is only…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Evelien Schat , Rens van de Schoot , Wouter M. Kouw , Duco Veen , Adriënne M. Mendrik

Recent work has shown that object-centric representations can greatly help improve the accuracy of learning dynamics while also bringing interpretability. In this work, we take this idea one step further, ask the following question: "can…

Computer Vision and Pattern Recognition · Computer Science 2024-07-04 Sanket Gandhi , Atul , Samanyu Mahajan , Vishal Sharma , Rushil Gupta , Arnab Kumar Mondal , Parag Singla

Pre-trained models have been a foundational approach in speech recognition, albeit with associated additional costs. In this study, we propose a regularization technique that facilitates the training of visual and audio-visual speech…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Adriana Fernandez-Lopez , Honglie Chen , Pingchuan Ma , Lu Yin , Qiao Xiao , Stavros Petridis , Shiwei Liu , Maja Pantic

Deep representation learning has become one of the most widely adopted approaches for visual search, recommendation, and identification. Retrieval of such representations from a large database is however computationally challenging.…

Machine Learning · Computer Science 2020-04-14 Biswajit Paria , Chih-Kuan Yeh , Ian E. H. Yen , Ning Xu , Pradeep Ravikumar , Barnabás Póczos

In this paper, we study randomized reduction methods, which reduce high-dimensional features into low-dimensional space by randomized methods (e.g., random projection, random hashing), for large-scale high-dimensional classification.…

Machine Learning · Computer Science 2015-07-21 Tianbao Yang , Lijun Zhang , Rong Jin , Shenghuo Zhu

Deep neural networks have exhibited remarkable performance in image super-resolution (SR) tasks by learning a mapping from low-resolution (LR) images to high-resolution (HR) images. However, the SR problem is typically an ill-posed problem…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Yong Guo , Mingkui Tan , Zeshuai Deng , Jingdong Wang , Qi Chen , Jiezhang Cao , Yanwu Xu , Jian Chen

A very deep convolutional neural network (CNN) has recently achieved great success for image super-resolution (SR) and offered hierarchical features as well. However, most deep CNN based SR models do not make full use of the hierarchical…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Yulun Zhang , Yapeng Tian , Yu Kong , Bineng Zhong , Yun Fu

Self-supervised representation learning~(SSRL) has advanced considerably by exploiting the transformation invariance assumption under artificially designed data augmentations. While augmentation-based SSRL algorithms push the boundaries of…

Machine Learning · Computer Science 2024-03-22 Yi Sui , Tongzi Wu , Jesse C. Cresswell , Ga Wu , George Stein , Xiao Shi Huang , Xiaochen Zhang , Maksims Volkovs

Generalized Category Discovery (GCD) aims to identify both known and unknown categories, with only partial labels given for the known categories, posing a challenging open-set recognition problem. State-of-the-art approaches for GCD task…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Wei He , Xianghan Meng , Zhiyuan Huang , Xianbiao Qi , Rong Xiao , Chun-Guang Li

Since the first success of Dong et al., the deep-learning-based approach has become dominant in the field of single-image super-resolution. This replaces all the handcrafted image processing steps of traditional sparse-coding-based methods…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Shunta Maeda

Sparse representation based classification (SRC) is popularly used in many applications such as face recognition, and implemented in two steps: representation coding and classification. For a given set of testing images, SRC codes every…

Computer Vision and Pattern Recognition · Computer Science 2015-05-19 Liping Wang , Songcan Chen

Regression via classification (RvC) is a common method used for regression problems in deep learning, where the target variable belongs to a set of continuous values. By discretizing the target into a set of non-overlapping classes, it has…

Machine Learning · Computer Science 2022-04-11 Axel Berg , Magnus Oskarsson , Mark O'Connor

Raman scattering is based on molecular vibration spectroscopy and provides a powerful technology for pathogenic bacteria diagnosis using the unique molecular fingerprint information of a substance. The integration of deep learning…

Signal Processing · Electrical Eng. & Systems 2024-12-31 Haiming Yao , Wei Luo , Tao Zhou , Ang Gao , Xue Wang
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