نتایج جستجو برای: reducing subspace

تعداد نتایج: 259841  

Journal: :caspian journal of mathematical sciences 2014
d. alimohammadi s. moradi

Journal: :Journal of Mathematical Analysis and Applications 2011

2009
Yong Fan Dinggang Shen

Feature extraction and selection are of great importance in neuroimage classification for identifying informative features and reducing feature dimensionality, which are generally implemented as two separate steps. This paper presents an integrated feature extraction and selection algorithm with two iterative steps: constrained subspace learning based feature extraction and support vector machi...

2015
M. Seetha Nagaratna Hegde

Human face expression is one of the cognitive activity or attribute to deliver the opinions to others. This paper mainly delivers the performance of appearance based holistic approach subspace methods based on Principal Component Analysis (PCA). In this work texture features are extracted from face images using Gabor filter. It was observed that extracted texture feature vector space has higher...

azghani, masoumeh, sadeghi, Nasser,

‎Channel estimation is an essential task to fully exploit the advantages of the massive MIMO systems‎. ‎In this paper‎, ‎we propose a semi-blind downlink channel estimation method for massive MIMO system‎. ‎We suggest a new modeling for the channel matrix subspace. Based on the low-rankness property, we have prposed an algorithm to estimate the channel matrix subspace. In the next step, using o...

Journal: :Numerical Linear Algebra with Applications 1999

Journal: :Numerical Linear Algebra with Applications 1999

1993
Rowan Killip Christian Remling

Let T be a self-adjoint operator acting in a separable Hilbert space H. We establish a correspondence between the reducing subspaces of T that come from a spectral projection and the convex, norm-closed bands in the set of finite Borel measures on R. IfH is not separable, we still obtain a reducing subspace corresponding to each convex norm-closed band. These observations lead to a unified trea...

Journal: :International Journal of Pure and Apllied Mathematics 2013

Journal: :Mechanical Systems and Signal Processing 2023

Model order selection is a fundamental task in subspace identification for estimation of modal parameters, uncertainty propagation and damage diagnosis. However, the true model related low-rank structure dynamic system are generally unknown. In this paper, statistical methodology to actively select signal covariance-driven developed on basis analysis eigenvalue condition numbers output covarian...

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