Results 31 to 40 of about 4,845 (297)

Group-invariant Subspace Clustering [PDF]

open access: yes, 2015
—In this paper we consider the problem of group-invariant subspace clustering where the data is assumed to come from a union of group-invariant subspaces of a vector space, i.e.
Shuchin Aeron, Eric Kernfeld
core   +1 more source

Exact Solutions to the Fractional Differential Equations with Mixed Partial Derivatives

open access: yesAxioms, 2018
In this paper, the solvability of nonlinear fractional partial differential equations (FPDEs) with mixed partial derivatives is considered. The invariant subspace method is generalized and is then used to derive exact solutions to the nonlinear FPDEs ...
Jun Jiang, Yuqiang Feng, Shougui Li
doaj   +1 more source

Local Feature Discriminant Projection [PDF]

open access: yes, 2016
In this paper, we propose a novel subspace learning algorithm called Local Feature Discriminant Projection (LFDP) for supervised dimensionality reduction of local features.
Zhen, Xiantong   +3 more
core   +1 more source

Searching for Subspace Trails and Truncated Differentials

open access: yesIACR Transactions on Symmetric Cryptology, 2018
Grassi et al. [Gra+16] introduced subspace trail cryptanalysis as a generalization of invariant subspaces and used it to give the first five round distinguisher for Aes.
Gregor Leander   +2 more
doaj   +1 more source

2D-DOA Estimation for EMVS Array with Nonuniform Noise

open access: yesInternational Journal of Antennas and Propagation, 2021
Electromagnetic vector sensor (EMVS) array is one of the most potential arrays for future wireless communications and radars because it is capable of providing two-dimensional (2D) direction-of-arrival (DOA) estimation as well as polarization angles of ...
Chang-Xin Cai   +4 more
doaj   +1 more source

Exact results on some nonlinear Laguerre-type diffusion equations

open access: yesMathematical Modelling and Analysis, 2021
In this paper we obtain some new explicit results for nonlinear equations involving Laguerre derivatives in space and/or in time. In particular, by using the invariant subspace method, we have many interesting cases admitting exact solutions in terms of ...
Roberto Garra, Zivorad Tomovski
doaj   +1 more source

Human gait identification from extremely low-quality videos : an enhanced classifier ensemble method [PDF]

open access: yes, 2014
Nowadays, surveillance cameras are widely installed in public places for security and law enforcement, but the video quality may be low because of the limited transmission bandwidth and storage capacity.
Tistarelli, Massimo   +3 more
core   +1 more source

Symmetry Classification and Exact Solutions of a Variable Coefficient Space-Time Fractional Potential Burgers’ Equation

open access: yesInternational Journal of Differential Equations, 2016
We investigate the symmetry properties of a variable coefficient space-time fractional potential Burgers’ equation. Fractional Lie symmetries and corresponding infinitesimal generators are obtained.
Manoj Gaur, K. Singh
doaj   +1 more source

On the Geometry in the Large of Einstein-like Manifolds

open access: yesMathematics, 2022
Gray has presented the invariant orthogonal irreducible decomposition of the space of all covariant tensors of rank 3, obeying only the identities of the gradient of the Ricci tensor.
Josef Mikeš   +3 more
doaj   +1 more source

ISR: INVARIANT SUBSPACE RECOVERY [PDF]

open access: yes, 2021
Domain generalization asks for models trained on a set of training environments to perform well on unseen test environments. Recently, a series of algorithms such as Invariant Risk Minimization (IRM) and its follow-up works have been proposed for domain ...
Si, Haozhi
core   +2 more sources

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