Results 261 to 270 of about 5,758,272 (311)

Harmonic mean for subspace selection

2008 19th International Conference on Pattern Recognition, 2008
Under the homoscedastic Gaussian assumption, it has been shown that Fisherpsilas linear discriminant analysis (FLDA) suffers from the class separation problem when the dimensionality of subspace selected by FLDA is strictly less than the class number minus 1, i.e., the projection to a subspace tends to merge close class pairs.
null Wei Bian, null Dacheng Tao
openaire   +1 more source

The harmonic or geometric mean

ACM SIGARCH Computer Architecture News, 2006
For several decades, computer scientists have been arguing which mean is more appropriate for summarizing computer performance: the harmonic or the geometric. We show that many test cases used in the past to discredit one mean or the other are either artificial or incidental.
Daniel Citron, Adham Hurani, Alaa Gnadrey   +2 more
openaire   +1 more source

Matrix inequalities for the difference between arithmetic mean and harmonic mean

, 2015
Motivated by the refinements and reverses of arithmetic-geometric mean and arithmetic-harmonic mean inequalities for scalars and matrices, in this article, we generalize the scalar and matrix inequalities for the difference between arithmetic mean and ...
Wenshi Liao, Junliang Wu
semanticscholar   +1 more source

Integral means of harmonic mappings

1998
Summary: We prove that if \(f\) is a univalent, sense-preserving, harmonic mapping of the unit disc onto the symmetric strip \(|\Im w|
Grigoryan, Armen, Nowak, Maria (1951- )
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Lattice Paths and Harmonic Means

The College Mathematics Journal, 2016
Harmonic means are rarely discussed these days, perhaps because there are few interesting examples of their use.
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Beyond Trace Ratio: Weighted Harmonic Mean of Trace Ratios for Multiclass Discriminant Analysis

IEEE Transactions on Knowledge and Data Engineering, 2017
Zhihui Li, F. Nie, Xiaojun Chang, Yi Yang   +3 more
semanticscholar   +1 more source

Mathematical analysis of giving up smoking model via harmonic mean type incidence rate

Applied Mathematics and Computation, 2019
G. Rahman, R. Agarwal, Qamar Din
semanticscholar   +1 more source

Best possible bounds of the arithmetic mean with seiffert type means, harmonic and contra harmonic means

AIP Conference Proceedings, 2023
B. K. Sangeetha, Sandeep Kumar
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Harmonic Mean

2011
openaire   +2 more sources

Globally observed trends in mean and extreme river flow attributed to climate change

Science, 2021
Lukas Gudmundsson, Julien Boulange, Hong X Do   +2 more
exaly