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We propose a novel structured discriminative block-diagonal dictionary learning method, referred to as scalable Locality-Constrained Projective Dictionary Learning (LC-PDL), for efficient representation and classification. To improve the…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Zhao Zhang , Weiming Jiang , Zheng Zhang , Sheng Li , Guangcan Liu , Jie Qin

Supervised dictionary learning (SDL) is a classical machine learning method that simultaneously seeks feature extraction and classification tasks, which are not necessarily a priori aligned objectives. The goal of SDL is to learn a…

Machine Learning · Statistics 2022-06-15 Joowon Lee , Hanbaek Lyu , Weixin Yao

Recent years, analysis dictionary learning (ADL) and its applications for classification have been well developed, due to its flexible projective ability and low classification complexity. With the learned analysis dictionary, test samples…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Kun Jiang , Zhaoli Liu , Zheng Liu , Qindong Sun

We propose a joint subspace recovery and enhanced locality based robust flexible label consistent dictionary learning method called Robust Flexible Discriminative Dictionary Learning (RFDDL). RFDDL mainly improves the data representation…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Zhao Zhang , Jiahuan Ren , Weiming Jiang , Zheng Zhang , Richang Hong , Shuicheng Yan , Meng Wang

Discriminative Dictionary Learning (DL) methods have been widely advocated for image classification problems. To further sharpen their discriminative capabilities, most state-of-the-art DL methods have additional constraints included in the…

Machine Learning · Computer Science 2019-03-08 Wen Tang , Ashkan Panahi , Hamid Krim , Liyi Dai

Video anomaly detection is recently formulated as a multiple instance learning task under weak supervision, in which each video is treated as a bag of snippets to be determined whether contains anomalies. Previous efforts mainly focus on…

Computer Vision and Pattern Recognition · Computer Science 2022-08-12 Yujiang Pu , Xiaoyu Wu

For an object classification system, the most critical obstacles towards real-world applications are often caused by large intra-class variability, arising from different lightings, occlusion and corruption, in limited sample sets. Most…

Computer Vision and Pattern Recognition · Computer Science 2016-12-07 Homa Foroughi , Nilanjan Ray , Hong Zhang

In this paper, we address the problem of discriminative dictionary learning (DDL), where sparse linear representation and classification are combined in a probabilistic framework. As such, a single discriminative dictionary and linear…

Computer Vision and Pattern Recognition · Computer Science 2011-09-13 Bernard Ghanem , Narendra Ahuja

We present a new Deep Dictionary Learning and Coding Network (DDLCN) for image recognition tasks with limited data. The proposed DDLCN has most of the standard deep learning layers (e.g., input/output, pooling, fully connected, etc.), but…

Computer Vision and Pattern Recognition · Computer Science 2020-05-25 Hao Tang , Hong Liu , Wei Xiao , Nicu Sebe

In recent years, deep dictionary learning (DDL)has attracted a great amount of attention due to its effectiveness for representation learning and visual recognition.~However, most existing methods focus on unsupervised deep dictionary…

Machine Learning · Computer Science 2022-07-15 Xia Yuan , Jianping Gou , Baosheng Yu , Jiali Yu , Zhang Yi

This paper presents three case studies of modeling aspects of lexical processing with Linear Discriminative Learning (LDL), the computational engine of the Discriminative Lexicon model (Baayen et al., 2019). With numeric representations of…

Computation and Language · Computer Science 2021-07-09 Yu-Ying Chuang , Mihi Kang , Xuefeng Luo , R. Harald Baayen

Previous researches have demonstrated that the framework of dictionary learning with sparse coding, in which signals are decomposed as linear combinations of a few atoms of a learned dictionary, is well adept to reconstruction issues. This…

Computer Vision and Pattern Recognition · Computer Science 2012-03-06 Shu Kong , Donghui Wang

Convolutional Dictionary Learning (CDL) has emerged as a powerful approach for signal representation by learning translation-invariant features through convolution operations. While existing CDL methods are predominantly designed and used…

Signal Processing · Electrical Eng. & Systems 2025-05-22 Hao Chen , Dayuan Tan

We study in this paper the improvement of one-class support vector machines (OC-SVM) through sparse representation techniques for unsupervised anomaly detection. As Dictionary Learning (DL) became recently a common analysis technique that…

Machine Learning · Computer Science 2024-04-08 Paul Irofti , Iulian-Andrei Hîji , Andrei Pătraşcu , Nicolae Cleju

The label-embedded dictionary learning (DL) algorithms generate influential dictionaries by introducing discriminative information. However, there exists a limitation: All the label-embedded DL methods rely on the labels due that this way…

Machine Learning · Computer Science 2021-12-06 Shuai Shao , Lei Xing , Wei Yu , Rui Xu , Yanjiang Wang , Baodi Liu

Sparse coding with dictionary learning (DL) has shown excellent classification performance. Despite the considerable number of existing works, how to obtain features on top of which dictionaries can be better learned remains an open and…

Computer Vision and Pattern Recognition · Computer Science 2016-08-08 Weiyang Liu , Zhiding Yu , Yandong Wen , Rongmei Lin , Meng Yang

Recent years have witnessed the success of dictionary learning (DL) based approaches in the domain of pattern classification. In this paper, we present an efficient structured dictionary learning (ESDL) method which takes both the diversity…

Computer Vision and Pattern Recognition · Computer Science 2020-07-15 Zi-Qi Li , Jun Sun , Xiao-Jun Wu , He-Feng Yin

In this paper, we propose an analysis mechanism based structured Analysis Discriminative Dictionary Learning (ADDL) framework. ADDL seamlessly integrates the analysis discriminative dictionary learning, analysis representation and analysis…

Computer Vision and Pattern Recognition · Computer Science 2019-05-29 Zhao Zhang , Weiming Jiang , Jie Qin , Li Zhang , Fanzhang Li , Min Zhang , Shuicheng Yan

Convolutional dictionary learning (CDL) estimates shift invariant basis adapted to multidimensional data. CDL has proven useful for image denoising or inpainting, as well as for pattern discovery on multivariate signals. As estimated…

Machine Learning · Computer Science 2019-01-29 Thomas Moreau , Alexandre Gramfort

In this paper we present a new approach of incorporating kernels into dictionary learning. The kernel K-SVD algorithm (KKSVD), which has been introduced recently, shows an improvement in classification performance, with relation to its…

Computer Vision and Pattern Recognition · Computer Science 2016-05-25 Alona Golts , Michael Elad
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