Quaternion neural networks: State-of-the-art and research challenges

D García-Retuerta, R Casado-Vara… - … on Intelligent Data …, 2020 - Springer
Abstract Machine Learning has recently emerged as a new paradigm for processing all
types of information. In particular, Artificial Intelligence is attractive to corporations & …

Asymptotic behaviour of the quaternion linear canonical transform and the Bochner–Minlos theorem

KI Kou, J Morais - Applied Mathematics and Computation, 2014 - Elsevier
There have been numerous proposals in the literature to generalize the classical Fourier
transform by making use of the Hamiltonian quaternion algebra. The present paper reviews …

[HTML][HTML] An uncertainty principle for quaternion Fourier transform

M Bahri, ESM Hitzer, A Hayashi, R Ashino - Computers & Mathematics with …, 2008 - Elsevier
We review the quaternionic Fourier transform (QFT). Using the properties of the QFT we
establish an uncertainty principle for the right-sided QFT. This uncertainty principle …

[HTML][HTML] Pitt's inequality and the uncertainty principle associated with the quaternion Fourier transform

LP Chen, KI Kou, MS Liu - Journal of Mathematical Analysis and …, 2015 - Elsevier
The quaternion Fourier transform–a generalized form of the classical Fourier transform–has
been shown to be a powerful analyzing tool in image and signal processing. This paper …

On uncertainty principle for quaternionic linear canonical transform

KI Kou, JY Ou, J Morais - Abstract and Applied Analysis, 2013 - Wiley Online Library
We generalize the linear canonical transform (LCT) to quaternion‐valued signals, known as
the quaternionic linear canonical transform (QLCT). Using the properties of the LCT we …

Octonion spectrum of 3D short-time LCT signals

MY Bhat, AH Dar - Optik, 2022 - Elsevier
This work is devoted to the development of the octonion linear canonical transform (OLCT)
theory proposed by Gao and Li in 2021 that has been designated as an emerging tool in the …

[图书][B] Quaternion and Clifford Fourier Transforms

E Hitzer - 2021 - taylorfrancis.com
Quaternion and Clifford Fourier Transforms describes the development of quaternion and
Clifford Fourier transforms in Clifford (geometric) algebra over the last 30 years. It is the first …

The octonion linear canonical transform: Definition and properties

WB Gao, BZ Li - Signal processing, 2021 - Elsevier
The linear canonical transform (LCT) is a kind of integral transforms with wide applications in
signal analysis. There have been numerous studies in the literature to generalize the LCT by …

Uncertainty principles for hypercomplex signals in the linear canonical transform domains

Y Yang, KI Kou - Signal Processing, 2014 - Elsevier
Linear canonical transforms (LCTs) are a family of integral transforms with wide application
in optical, acoustical, electromagnetic, and other wave propagation problems. The Fourier …

The 2-D Hyper-complex Gabor quadratic-phase Fourier transform and uncertainty principles

MY Bhat, AH Dar - The Journal of Analysis, 2023 - Springer
In this paper, we present a novel integral transform known as the 2-D Hyper-complex
(quaternion) Gabor quadratic-phase Fourier transform (Q-GQPFT), which is embodiment of …