Results 11 to 20 of about 156,827 (214)

Statistical Estimation of Discriminant Space using Various Projection Indices [PDF]

open access: yesNonlinear Analysis, 2001
Projection pursuit is a method for finding interesting projections of high-dimensional multivariate data. Typically interesting projections are found by numerical maximizing some measure of non-normality of projected data (so-called projection index ...
R. Krikštolaitis
doaj   +3 more sources

Global specific vegetation cover (SVC), base clumping index (BCI), full clumping index (FCI), and leaf projection function (G) derived from clumping index (CI), leaf area index (LAI), and fractional vegetation cover (FVC) remote sensing products [PDF]

open access: yes, 2022
The dataset includes global specific vegetation cover (SVC), base clumping index (BCI), full clumping index (FCI), and leaf projection function (G) derived from clumping index (CI), leaf area index (LAI), and fractional vegetation cover (FVC) remote ...
Zhang, Yinghui   +4 more
core   +1 more source

Far-Field Subwavelength Straight-Line Projection/Imaging by Means of a Novel Double-Near-Zero Index-Based Two-Layer Metamaterial [PDF]

open access: yes, 2021
In this paper, for the first time, tuned near-zero-index materials are used in a structure for the long-distance projection of very closely spaced objects with subwavelength separation.
Taras Plakhotnik   +2 more
core   +1 more source

Probability density estimation using data projection

open access: yesLietuvos Matematikos Rinkinys, 2009
Nonparametric estimation of multivariate multimodal probability density is analysed. The projection pursuit density estimator was proposed by J.H. Friedman.
Mindaugas Kavaliauskas
doaj   +1 more source

Body Image Projection Bias in Heterosexual Romantic Relationships: A Dyadic Investigation [PDF]

open access: yes, 2021
Guided by projection bias perspectives, this article sought to advance understanding of the associations between body image and relationship and sexual satisfaction within heterosexual romantic relationships.
Donovan, Caroline L   +3 more
core   +1 more source

The Index of a Pair of Projections

open access: yesJournal of Functional Analysis, 1994
The authors discuss pairs of self-adjoint projections with \(P- Q\in {\mathcal T}_{2n+ 1}\), the trace ideal, and prove that for \(m\geq n\), \[ \text{tr}(P- Q)^{2m+ 1}= \text{tr}(P- Q)^{2n+ 1}= \dim(\text{Ker } Q\cap \text{Ran } P)- \dim(\text{Ker } P\cap \text{Ran } Q) \] is an integer. They also prove that there exists a unitary \(V\) interchanging \
Avron, J., Seiler, R., Simon, B.
openaire   +2 more sources

PPCI: an R Package for Cluster Identification using Projection Pursuit [PDF]

open access: yes, 2019
This paper presents the R package PPCI which implements three recently proposed projection pursuit methods for clustering. The methods are unified by the approach of defining an optimal hyperplane to separate clusters, and deriving a projection index ...
Hofmeyr, David P.   +3 more
core   +1 more source

A PRELIMINARY STUDY ON CALCULATION METHOD OF VISUAL IMPACT OF URBAN ARCHITECTURAL HERITAGE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Urban architectural heritage as a part of cultural heritage, its surrounding buildings will have a certain visual impact on the cultural heritage itself.
S. Yang   +5 more
doaj   +1 more source

Similarity Search Based on Random Projection for High Frequency Time Series [PDF]

open access: yes, 2008
Similarity search in high frequency time series of domains as diverse as finance, marketing and industry has attracted much research attention recently. The main notions used in similarity search for time series are defined in a formal way.
Wu W(吴薇)   +3 more
core   +1 more source

Detection and visualization of non-linear structures in large datasets using Exploratory Projection Pursuit Laboratory (EPP-Lab) software

open access: yesJournal of King Saud University: Computer and Information Sciences, 2017
This article consists of using biologically inspired algorithms in order to detect potentially interesting structures in large and multidimensional data sets. Data exploration and the detection of interesting structures are based on the use of Projection
Souad Larabi Marie-Sainte
doaj   +1 more source

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