Results 101 to 110 of about 495,795 (215)

The Integration Order of Vector Autoregressive Processes [PDF]

We show that the order of integration of a vector autoregressive process is equal to the difference between the multiplicity of the unit root in the characteristic equation and the multiplicity of the unit root in the adjoint matrix polynomial.
Massimo Franchi
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On vector autoregressive modeling in space and time [PDF]

Despite the fact that it provides a potentially useful analytical tool, allowing for the joint modeling of dynamic interdependencies within a group of connected areas, until lately the VAR approach had received little attention in regional science and ...
Valter Di Giacinto
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2-Conformal Vector Fields on the Model Sol Space and Hyperbolic Ricci Solitons

Journal of Mathematics
In this study, we present the notion of 2-conformal vector fields on Riemannian and semi-Riemannian manifolds, which are an extension of Killing and conformal vector fields. Next, we provide suitable vector fields in Sol space that are 2-conformal. A few
Rawan Bossly, Ghodratallah Fasihi-Ramandi, Mohd Danish Siddiqi   +2 more
doaj   +1 more source

A Morse-type index for critical points of vector functions [PDF]

In this work we study the critical points of vector functions form Rn to Rm with n m, following the definition introduced by S. Smale in the context of vector optimization.
Rocca Matteo, Miglierina Enrico, Molho Elena   +2 more
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Massive Data Classification via Unconstrained Support Vector Machines

, 2006
A highly accurate algorithm, based on support vector machines formulated as linear programs [13, 1], is proposed here as a completely unconstrained minimization problem [15].
O. L. Mangasarian, Mangasarian, Olvi, Thompson, Michael, M. E. Thompson   +3 more
core   +1 more source

Multilevel Dodecagonal Space Vector Generation for Open-end Winding Induction Motor Drive Using Conventional Three Level Inverters

, 2009
A novel dodecagonal space vector structure for induction motor drive is presented in this paper. It consists of two dodecagons, with the radius of the outer one twice the inner one. Compared to existing dodecagonal space vector structures, to achieve the
Sivakumar, K, Das, Anandarup, Ramchand, Rijil, Gopakumar, K, Patel, Chintan   +4 more
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Using Support Vector Machine for Prediction Dynamic Voltage Collapse in an Actual Power System [PDF]

, 2008
—This paper presents dynamic voltage collapse prediction on an actual power system using support vector machines. Dynamic voltage collapse prediction is first determined based on the PTSI calculated from information in dynamic simulation
Mohamed , Azah, Hussain, Aini, Nizam , Muhammad   +2 more
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Regime-switching Vector Error Correction Model (VECM) analysis of UK meat consumption [PDF]

The standard Vector Error Correction Model (VECM) approach to investigating the underlying dynamics of economic variables assumes a constant co-integration space.
John Lingard, Philip Kostov
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A Three-level Space Vector PWM Strategy Based on Variable Virtual Middle Vector

Kongzhi Yu Xinxi Jishu, 2018
T-type three-level topology has been widely applied in power converters for its high efficiency and low output harmonics, and the performance of this converter is determined by the effect of its capacitor neutral point voltage control.
LIN Zhenjun, LIU Yongjiang, LI Hua, LIU Haitao, LI Congda, XUE Xin   +5 more
doaj  

Robust Linear and Support Vector Regression

, 2000
The robust Huber M-estimator, a differentiable cost function that is quadratic for small errors and linear otherwise, is modeled exactly, in the original primal space of the problem, by an easily solvable simple convex quadratic program for both linear ...
Mangasarian, Olvi, Musicant, David
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