Results 31 to 40 of about 6,752,036 (307)

Block Orthonormal Overcomplete Dictionary Learning [PDF]

open access: yes, 2013
In the field of sparse representations, the overcomplete dictionary learning problem is of crucial importance and has a growing application pool where it is used.
Dumitrescu, Bogdan, Rusu, Cristian
core   +1 more source

Denoising of Seismic Data Based on Block Dictionary Learning Theory

open access: yesCT Lilun yu yingyong yanjiu, 2022
With the increasingly complex observation environment of oil and gas exploration, the seismic data collected are often mixed with various noise signals, resulting in the effective weak signal caused by the exploration target is covered, which seriously ...
Junjie ZHOU   +3 more
doaj   +1 more source

Learning of structured graph dictionaries [PDF]

open access: yes2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2012
We propose a method for learning dictionaries towards sparse approximation of signals defined on vertices of arbitrary graphs. Dictionaries are expected to describe effectively the main spatial and spectral components of the signals of interest, so that their structure is dependent on the graph information and its spectral representation. We first show
Zhang, X, Dong, X, Frossard, P
openaire   +2 more sources

Supervised Dictionary Learning

open access: yesCoRR, 2008
It is now well established that sparse signal models are well suited to restoration tasks and can effectively be learned from audio, image, and video data. Recent research has been aimed at learning discriminative sparse models instead of purely reconstructive ones.
Mairal, Julien   +4 more
openaire   +5 more sources

Improved Cross-Label Suppression Dictionary Learning for Face Recognition

open access: yesIEEE Access, 2018
Cross-label suppression dictionary learning is an effective approach to preserve the label property for signal representation in face recognition. This paper presents a proposed improved dictionary learning algorithm, considering the tradeoffs between ...
Tian Zhou   +4 more
doaj   +1 more source

DEVELOPING E-DICTIONARY AS AN INNOVATIVE MEDIA IN COVID-19 PANDEMIC

open access: yesCeltic, 2021
Developing e-dictionary as an innovative online learning media in Covid-19 pandemic is a smart option in learning. It was needed to use in teaching English both online and offline.
Fitria Nur Hamidah   +2 more
doaj   +1 more source

Graph-Regularized Discriminative Analysis-Synthesis Dictionary Pair Learning for Image Classification

open access: yesIEEE Access, 2019
Analysis-synthesis dictionary pair learning, which can provide a comprehensive view of data representation, has been applied in various computer vision tasks.
Heyou Chang   +4 more
doaj   +1 more source

Multi-task hybrid dictionary learning for vehicle classification in sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In this article, we propose a novel multi-task hybrid dictionary learning approach for moving vehicle classification tasks using multi-sensor networks to improve the classification accuracy in complex scenes with low time complexity, which considers both
Rui Wang   +3 more
doaj   +1 more source

Robust Multimodal Dictionary Learning [PDF]

open access: yes, 2013
We propose a robust multimodal dictionary learning method for multimodal images. Joint dictionary learning for both modalities may be impaired by lack of correspondence between image modalities in training data, for example due to areas of low quality in one of the modalities.
Tian Cao 0001   +5 more
openaire   +3 more sources

Locality Preserving and Label-Aware Constraint-Based Hybrid Dictionary Learning for Image Classification

open access: yesApplied Sciences, 2021
Dictionary learning has been an important role in the success of data representation. As a complete view of data representation, hybrid dictionary learning (HDL) is still in its infant stage.
Jianqiang Song   +5 more
doaj   +1 more source

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