Results 1 to 10 of about 1,177,805 (209)

Medical image encryption algorithm based on a new five-dimensional multi-band multi-wing chaotic system and QR decomposition [PDF]

Scientific Reports
In this study, we propose a medical image encryption algorithm based on a new five-dimensional (5D) multi-band multi-wing chaotic system and QR decomposition.
Zeben Zhuang, Zhiben Zhuang, Tao Wang
doaj   +3 more sources

Through-Wall Image Enhancement Using Fuzzy and QR Decomposition [PDF]

The Scientific World Journal, 2014
QR decomposition and fuzzy logic based scheme is proposed for through-wall image enhancement. QR decomposition is less complex compared to singular value decomposition.
Muhammad Mohsin Riaz, Abdul Ghafoor
doaj   +2 more sources

Efficient enhancement of low-rank tensor completion via thin QR decomposition [PDF]

Frontiers in Big Data
Low-rank tensor completion (LRTC), which aims to complete missing entries from tensors with partially observed terms by utilizing the low-rank structure of tensors, has been widely used in various real-world issues.
Yan Wu, Yunzhi Jin
doaj   +2 more sources

Reconstruction of Complex Network based on the Noise via QR Decomposition and Compressed Sensing. [PDF]

Sci Rep, 2017
It is generally known that the states of network nodes are stable and have strong correlations in a linear network system. We find that without the control input, the method of compressed sensing can not succeed in reconstructing complex networks in ...
Li L, Li L, Xu D, Peng H, Kurths J, Yang Y.   +5 more
europepmc   +2 more sources

Fast time evolution of matrix product states using the QR decomposition [PDF]

Physical review B, 2022
We propose and benchmark a modified time evolution block decimation (TEBD) algorithm that uses a truncation scheme based on the QR decomposition instead of the singular value decomposition (SVD). The modification reduces the scaling with the dimension of
Jakob Unfried, J. Hauschild, F. Pollmann
semanticscholar   +1 more source

Continuous and Discrete ZND Models with Aid of Eleven Instants for Complex QR Decomposition of Time-Varying Matrices

Mathematics, 2023
The problem of QR decomposition is considered one of the fundamental problems commonly encountered in both scientific research and engineering applications.
Jianrong Chen, Xiangui Kang, Yunong Zhang   +2 more
doaj   +1 more source

Drought prediction based on an improved VMD-OS-QR-ELM model.

PLoS ONE, 2022
To overcome the low accuracy, poor reliability, and delay in the current drought prediction models, we propose a new extreme learning machine (ELM) based on an improved variational mode decomposition (VMD).
Yang Liu, Li Hu Wang, Li Bo Yang, Xue Mei Liu   +3 more
doaj   +1 more source

CP decomposition for tensors via alternating least squares with QR decomposition [PDF]

Numerical Linear Algebra with Applications, 2021
The CP tensor decomposition is used in applications such as machine learning and signal processing to discover latent low‐rank structure in multidimensional data.
R. Minster, Irina Viviano, Xiaotian Liu, Grey Ballard   +3 more
semanticscholar   +1 more source

Runoff Prediction and Analysis Based on Improved CEEMDAN-OS-QR-ELM

IEEE Access, 2021
To solve the problems of low prediction accuracy, poor stability, and low calculation efficiency in runoff forecasting, this study develops an extreme learning machine (ELM) model based on improved complete ensemble empirical mode decomposition adaptive ...
Yang Liu, Lihu Wang, Libo Yang, Xuemei Liu, Lingchen Wang   +4 more
doaj   +1 more source

Low‐complexity sphere decoding for MIMO‐SCMA systems

IET Communications, 2021
Multiple‐input multiple‐output‐sparse code multiple access, a non‐trivial integration of sparse code multiple access and multiple‐input multiple‐output techniques, is able to achieve high spectrum efficiency and massive user connections.
Zhipeng Pan, Jing Lei, Lei Wen, Chaojing Tang, Zhongfeng Wang   +4 more
doaj   +1 more source