نتایج جستجو برای: deflation

تعداد نتایج: 2048  

2006
Björn Adlerborn Daniel Kressner

Recent improvements to the QZ algorithm for solving generalized eigenvalue problems are summarized. Among the major modifications are novel multishift QZ iterations based on chasing chains of tiny bulges and an extension of the so called aggressive early deflation strategy. The former modification aims to improve the execution time of the QZ algorithm on modern computing systems without changin...

2012
Nikolaos Pitelis Anastasios Tefas

A new method for dimensionality reduction and feature extraction based on Support Vector Machines and minimization of the within-class data dispersion is proposed. An iterative procedure is proposed that successively applies Support Vector Machines on perpendicular subspaces using the deflation transformation in such a way that the within-class variance is minimized. The proposed approach is pr...

Journal: :The Journal of bone and joint surgery. British volume 2001
N Tanaka H Sakahashi E Sato K Hirose T Ishima S Ishii

We studied 99 patients who were undergoing total knee arthroplasty (TKA) to determine the optimum protocol for the administration of tranexamic acid (TNA) in order to reduce blood loss. It decreased by more than 40% after the administration of TNA. The haemostatic effect was greatest when TNA was given preoperatively and on deflation of the tourniquet. There was no increase in the incidence of ...

2013
John H. Cochrane

In standard solutions, the new-Keynesian model produces a deep recession with deflation in a liquidity trap. Useless government spending, technical regress, and capital destruction have large positive multipliers. The recession, deflation and policy paradoxes are larger when prices are less sticky. I show that these features are all artifacts of equilibrium selection. For the same interest-rate...

2013
James Levitt Robert van de Geijn Alan Cline

The QR algorithm is an algorithm for computing the spectral decomposition of a symmetric matrix [9]. Despite it’s high accuracy, other methods are often preferred for the symmetric eigenvalue problem due to the QR algorithm’s relatively poor performance [13]. In recent years, new techniques have arisen that dramatically improve its performance. The restructured symmetric QR algorithm, introduce...

Journal: :Journal of Computational and Applied Mathematics 2023

In this paper, we consider a block Jacobi preconditioner and various deflation techniques applied in the Deflated Preconditioned Conjugate Gradient (DPCG) method for solving sparse system of linear equations derived from statistical mixed model that analyses simultaneously phenotypic pedigree information genotyped ungenotyped animals with Single Polymorphism Nucleotide genotypes animals. livest...

Journal: :Plastic and reconstructive surgery 2015
Nathaniel L Villanueva Sean M Hill Kevin H Small Rod J Rohrich

The aging hand is characterized by skin changes and soft-tissue deflation, which leads to rhytides, dermal atrophy, and distinct anatomical structures. Soft-tissue deflation and prominent hand anatomy can be corrected with volume augmentation using dermal fillers or lipofilling. Fat transfer volumizes the hand with prolonged durability and efficacy, autologous tissue replacement, and possible d...

2016
George W. Evans Seppo Honkapohja Kaushik Mitra

Stagnation as the new norm and fiscal policy are examined in a New Keynesian model with adaptive learning determining expectations. We impose inflation and consumption lower bounds, which can be relevant when agents are pessimistic. The inflation target is locally stable under learning. Pessimistic initial expectations may sink the economy into steady-state stagnation with deflation. The deflat...

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