نتایج جستجو برای: fisher

تعداد نتایج: 18991  

2007
Kitsuchart Pasupa Robert F. Harrison Peter Willett

By applying recent results in optimization transfer, a new algorithm for kernel Fisher Discriminant Analysis is provided that makes use of a non-smooth penalty on the coefficients to provide a parsimonious solution. The algorithm is simple, easily programmed and is shown to perform as well as or better than a number of leading machine learning algorithms on a substantial benchmark. It is then a...

2008
B. P. Dolan

Biskup et al. [Phys. Rev. Lett. 84 (2000) 4794] have recently suggested that the loci of partition function zeroes can profitably be regarded as phase boundaries in the complex temperature or field planes. We obtain the Fisher zeroes for Ising and Potts models on non-planar (“thin”) regular random graphs using this approach, and note that the locus of Fisher zeroes on a Bethe lattice is identic...

2008
ROBERT CARROLL

Some situations are discussed where subquantum oscillations in momentum arise in connection with Fisher information and the quantum potential.

2002
Yixiao Sun Peter C. B. Phillips

It is argued that univariate long memory estimates based on ex post data tend to underestimate the persistence of ex ante variables (and, hence, that of the ex post variables themselves) because of the presence of unanticipated shocks whose short run volatility masks the degree of long range dependence in the data. Empirical estimates of long range dependence in the Fisher equation are shown to...

2011
Charles Bouveyron Camille Brunet

Fisher Discriminant Analysis (FDA) is a powerful and popular method for dimensionality reduction and classification which has unfortunately poor performances in the cases of label noise and sparse labeled data. To overcome these limitations, we propose a probabilistic framework for FDA and extend it to the semi-supervised case. Experiments on realworld datasets show that the proposed approach w...

2000
Stacy S. McGaugh

I describe the disk mass–rotation velocity relation which underpins the familiar luminosity–linewidth relation. Continuity of this relation favors nearly maximal stellar mass-to-light ratios. This contradicts the low mass-to-light ratios implied by the lack of surface brightness dependence in the same relation. 1. Searching for the Physical Basis of the Tully-Fisher Relation The Tully-Fisher (T...

2017
Harald Hanselmann Shen Yan Hermann Ney

Most current state-of-the-art methods for unconstrained face recognition use deep convolutional neural networks. Recently, it has been proposed to augment the typically used softmax cross-entropy loss by adding a center loss trying to minimize the distance between the face images and their class centers. In this work we further extend the center (intra-class) loss with an inter-class loss remin...

2002
Roger A. Powell William J. Zielinski

The fisher (Martes pennanti) is a medium-size mammalian carnivore and the largest member of the genus Martes (Anderson 1970) of the family Mustelidae in the order Carnivora. The genus Martes includes five or six other extant species. The fisher has the general body build of a stocky weasel and is long, thin, and set low to the ground. A fisher's head is triangular with a pronounced muzzle, its ...

2006
Michael Pierce P. Murdin

Journal: :Anaesthesia 1978

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