Results 21 to 30 of about 4,845 (297)
Approximate invariant subspaces and quasi-newton optimization methods [PDF]
Optimization Methods and Software, 2010 New approximate secant equations are shown to result from the knowledge of (problem dependent) invariant subspace information, which in turn suggests improvements in quasi-Newton methods for unconstrained minimization. A new limited-memory Broyden-Fletcher-Goldfarb-Shanno using approximate secant equations is then derived and its encouraging behaviour ...
Gratton, Serge +1 more
openaire +1 more source
Advances in Difference Equations, 2020 In this paper, we show that the invariant subspace method can be successfully utilized to get exact solutions for nonlinear fractional partial differential equations with generalized fractional derivatives. Using the invariant subspace method, some exact
Mohamed S. Abdel Latif +2 more
doaj +1 more source
SSA of biomedical signals: A linear invariant systems approach [PDF]
, 2010 Singular spectrum analysis (SSA) is considered from a linear invariant systems perspective. In this terminology, the extracted components are considered as outputs of a linear invariant system which corresponds to finite impulse response (FIR) filters ...
Figueiredo, Nuno +7 more
core +2 more sources
On reducing the effect of covariate factors in gait recognition : a classifier ensemble method [PDF]
, 2015 Robust human gait recognition is challenging because of the presence of covariate factors such as carrying condition, clothing, walking surface, etc. In this paper, we model the effect of covariates as an unknown partial feature corruption problem. Since
Roli, Fabio, Guan, Yu, Li, Chang-Tsun
core +1 more source
Robust gait recognition from extremely low frame-rate videos [PDF]
, 2013 In this paper, we propose a gait recognition method for extremely low frame-rate videos. Different from the popular temporal reconstruction-based methods, the proposed method uses the average gait over the whole sequence as input feature template ...
Choudhury, Sruti Das +2 more
core +1 more source
Discriminative Semantic Subspace Analysis for Relevance Feedback [PDF]
, 2016 Content-based image retrieval (CBIR) has attracted much attention during the past decades for its potential practical applications to image database management. A variety of relevance feedback (RF) schemes have been designed to bridge the gap between low-
Zhang, Lining +6 more
core +1 more source
A robust speed-invariant gait recognition system for walker and runner identification [PDF]
, 2013 In real-world scenarios, walking/running speed is one of the most common covariate factors that can affect the performance of gait recognition systems.
Chang-Tsun Li +3 more
core +1 more source
Minimum mean square distance estimation of a subspace [PDF]
, 2011 We consider the problem of subspace estimation in a Bayesian setting. Since we are operating in the Grassmann manifold, the usual approach which consists of minimizing the mean square error (MSE) between the true subspace U and its estimate U may not be ...
Jean-Yves Tourneret +5 more
core +1 more source
Noise Characterization: Keeping Reduction Based Per-turbed Quantum Walk Search Optimal
EPJ Web of Conferences, 2019 In a recent work by Novo et al. (Sci. Rep. 5, 13304, 2015), the invariant subspace method was applied to the study of continuous-time quantum walk (CTQW).
Chiang Chen-Fu, Hsieh Chang-Yu
doaj +1 more source
Karpatsʹkì Matematičnì Publìkacìï, 2015 The possibility of applying the method of reducing upon finite-dimensional invariant subspaces, generated by the eigenvalues of the associated spectral problem, to some two-dimensional generalization of the relativistic Toda lattice with the triple ...
O.Ye. Hentosh
doaj +1 more source