نتایج جستجو برای: linear mapping

تعداد نتایج: 669437  

2000
HAO Pengwei SHI

Abstract The general integer mapping theory of invertible linear transforms is considered in this paper. Two terms of integer factor and elementary triangular matrix are introduced. We prove that there exists an integer implementation if a linear transform is invertible and in finite dimensional space. The integer implementation of an invertible linear transform has several advantages such as (...

2017
Yanyun Jiang Yuanjie Zheng Sujuan Hou Yuchou Chang James Gee

We propose a novel landmark matching based method for aligning multimodal images, which is accomplished uniquely by resolving a linear mapping between different feature modalities. This linear mapping results in a new measurement on similarity of images captured from different modalities. In addition, our method simultaneously solves this linear mapping and the landmark correspondences by minim...

2011
Ming-Syan Chen Keng-Pei Lin

Training support vector machines (SVMs) with nonlinear kernel functions on large-scale data are usually very timeconsuming. In contrast, there exist faster solvers to train the linear SVM. We propose a technique which sufficiently approximates the infinite-dimensional implicit feature mapping of the Gaussian kernel function by a low-dimensional feature mapping. By explicitly mapping data to the...

Journal: :Optics express 2015
Reza Ashrafi Mohammad Rezagholipour Dizaji Luis Romero Cortés Jiejun Zhang Jianping Yao José Azaña Lawrence R Chen

We propose and validate experimentally a time-delay to intensity mapping process based on second-order optical integrators. This mapping provides dynamic control of the intensity modulation profile of a waveform based on a purely passive and linear process. In particular, we can realize linear intensity control by tuning the time-delay between two optical pulses launched into a second-order opt...

Journal: :international journal of nonlinear analysis and applications 0
khalil ekrami department of mathematics, payame noor university madjid mirzavaziri department of pure mathematics and center of excellence in analysis on algebraic struc-tures (ceaas), ferdowsi university of mashhad hamid reza ebrahimi vishki department of pure mathematics and center of excellence in analysis on algebraic struc-tures (ceaas), ferdowsi university of mashhad,

let $mathfrak{a}$ be an algebra. a linear mapping $delta:mathfrak{a}tomathfrak{a}$ is called a textit{derivation} if $delta(ab)=delta(a)b+adelta(b)$ for each $a,binmathfrak{a}$. given two derivations $delta$ and $delta'$ on a $c^*$-algebra $mathfrak a$, we prove that there exists a derivation $delta$ on $mathfrak a$ such that $deltadelta'=delta^2$ if and only if either $delta'=0$...

Linear stability analysis of the three dimensional plane wake flow is performed using a mapped finite di?erence scheme in a domain which is doubly infinite in the cross–stream direction of wake flow. The physical domain in cross–stream direction is mapped to the computational domain using a cotangent mapping of the form y = ?cot(??). The Squire transformation [2], proposed by Squire, is also us...

2015
Radek Cibulka Asen L. Dontchev Vladimir M. Veliov R. Cibulka A. L. Dontchev V. M. Veliov

In a paper of 1950 L. M. Graves proved that, for a function f acting between Banach spaces and an interior point x̄ in its domain, if there exists a continuous linear mapping A which is surjective and the Lipschitz modulus of the difference f − A at x̄ is sufficiently small, then f is (linearly) open at x̄. This is an extension of the Banach open mapping principle from continuous linear mappings t...

Journal: :Inf. Syst. 2007
Mustafa Atay Artem Chebotko Dapeng Liu Shiyong Lu Farshad Fotouhi

Storing and querying XML documents using a RDBMS is a challenging problem since one needs to resolve the conflict between the hierarchical, ordered nature of the XML data model and the flat, unordered nature of the relational data model. This conflict can be resolved by the following XML-to-Relational mappings: schema mapping, data mapping and query mapping. In this paper, we propose: (i) a los...

Journal: :SIAM J. Control and Optimization 2016
Radek Cibulka Asen L. Dontchev Vladimir M. Veliov

In a paper of 1950 Graves proved that for a function f acting between Banach spaces and an interior point x̄ in its domain, if there exists a continuous linear mapping A which is surjective and the Lipschitz modulus of the difference f −A at x̄ is sufficiently small, then f is (linearly) open at x̄. This is an extension of the Banach open mapping principle from continuous linear mappings to Lipsch...

Journal: :VLSI Signal Processing 1995
Jingling Xue

This paper addresses the problem of mapping algorithms with constant data dependences to linear processor arrays. The closed-form necessary and suucient mapping conditions are derived to identify mappings without computational connicts and data link collisions. These mapping conditions depend on the space-time mapping matrix and the problem size parameters only. Their correctness can be veriied...

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