Results 81 to 90 of about 478,588 (342)

Principal Tensor Embedding for Unsupervised Tensor Learning

open access: yesIEEE Access, 2020
Tensors and multiway analysis aim to explore the relationships between the variables used to represent the data and find a summarization of the data with models of reduced dimensionality. However, although in this context a great attention was devoted to
Claudio Turchetti   +2 more
doaj   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez   +2 more
wiley   +1 more source

Nonlinear Process Monitoring Based on Global Preserving Unsupervised Kernel Extreme Learning Machine

open access: yesIEEE Access, 2019
Recently, the unsupervised extreme learning machine (UELM) technique as a nonlinear data mining approach has been employed to diagnose nonlinear process faults.
Hanyuan Zhang   +5 more
doaj   +1 more source

The dimensionality reductions of environmental variables have a significant effect on the performance of species distribution models

open access: yesEcology and Evolution, 2023
How to effectively obtain species‐related low‐dimensional data from massive environmental variables has become an urgent problem for species distribution models (SDMs).
Hao‐Tian Zhang   +2 more
doaj   +1 more source

Relational Fisher Analysis: Dimensionality Reduction in Relational Data with Global Convergence

open access: yesAlgorithms, 2023
Most of the dimensionality reduction algorithms assume that data are independent and identically distributed (i.i.d.). In real-world applications, however, sometimes there exist relationships between data.
Li-Na Wang   +3 more
doaj   +1 more source

A Study on Dimensionality Reduction and Parameters for Hyperspectral Imagery Based on Manifold Learning

open access: yesSensors
With the rapid advancement of remote-sensing technology, the spectral information obtained from hyperspectral remote-sensing imagery has become increasingly rich, facilitating detailed spectral analysis of Earth’s surface objects.
Wenhui Song   +5 more
doaj   +1 more source

Differential reductions of the Kadomtsev-Petviashvili equation and associated higher dimensional nonlinear PDEs [PDF]

open access: yes, 2009
We represent an algorithm allowing one to construct new classes of partially integrable multidimensional nonlinear partial differential equations (PDEs) starting with the special type of solutions to the (1+1)-dimensional hierarchy of nonlinear PDEs linearizable by the matrix Hopf-Cole substitution (the B\"urgers hierarchy).
arxiv   +1 more source

Density Matrix Renormalization for Model Reduction in Nonlinear Dynamics [PDF]

open access: yes, 2007
We present a novel approach for model reduction of nonlinear dynamical systems based on proper orthogonal decomposition (POD). Our method, derived from Density Matrix Renormalization Group (DMRG), provides a significant reduction in computational effort for the calculation of the reduced system, compared to a POD.
arxiv   +1 more source

Large Nonlinear $W_{\infty}$ Algebras from Nonlinear Integrable Deformations of Self Dual Gravity [PDF]

open access: yesPhys. Lett. B353 (1995) 201, 1994
A proposal for constructing a universal nonlinear ${\hat W}_{\infty}$ algebra is made as the symmetry algebra of a rotational Killing-symmetry reduction of the nonlinear perturbations of Moyal-Integrable deformations of $D=4$ Self Dual Gravity (IDSDG).
arxiv   +1 more source

Maximum Discriminant Difference Criterion for Dimensionality Reduction of Tensor Data

open access: yesIEEE Access, 2020
Discriminant analysis is an important tool in machine learning. One of the motivations of this paper is to judge whether a dataset is suitable for discriminant analysis.
Xinya Peng, Zhengming Ma, Haowei Xu
doaj   +1 more source

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