Results 21 to 30 of about 18,318 (97)

NPCirc: An R Package for Nonparametric Circular Methods

open access: yesJournal of Statistical Software, 2014
Nonparametric density and regression estimation methods for circular data are included in the R package NPCirc. Specifically, a circular kernel density estimation procedure is provided, jointly with different alternatives for choosing the smoothing ...
María Oliveira   +2 more
doaj   +1 more source

Improving for Network Traffic Bayes Classification Method Based on Correlation Information [PDF]

open access: yesJisuanji gongcheng, 2016
With the rapid growth of network applications,the efficiency of traditional network traffic classification method based on ports and payloads is reduced greatly.Meanwhile,most traffic flow classification methods do not consider the correlation among the ...
ZHAO Ying,TAN Yang
doaj   +1 more source

Research of comparative analysis of nonparametric density estimation by applying Monte Carlo method

open access: yesLietuvos Matematikos Rinkinys, 2013
This paper presents nonparametric statistical estimation of distribution density. The Monte Carlo  method is used to show the effects of kernel function for multimodal kernel density estimation.
Indrė Drulytė, Tomas Ruzgas
doaj   +1 more source

Nonparametric Mean Estimation for Big-but-Biased Data

open access: yesProceedings, 2018
Some authors have recently warned about the risks of the sentence with enough data, the numbers speak for themselves. The problem of nonparametric statistical inference in big data under the presence of sampling bias is considered in this work.
Laura Borrajo, Ricardo Cao
doaj   +1 more source

Nonparametric Multivariate Density Estimation: Case Study of Cauchy Mixture Model

open access: yesMathematics, 2021
Estimation of probability density functions (pdf) is considered an essential part of statistical modelling. Heteroskedasticity and outliers are the problems that make data analysis harder. The Cauchy mixture model helps us to cover both of them.
Tomas Ruzgas   +2 more
doaj   +1 more source

Clustering via Nonparametric Density Estimation: The R Package pdfCluster

open access: yesJournal of Statistical Software, 2014
The R package pdfCluster performs cluster analysis based on a nonparametric estimate of the density of the observed variables. Functions are provided to encompass the whole process of clustering, from kernel density estimation, to clustering itself and ...
Adelchi Azzalini, Giovanna Menardi
doaj   +1 more source

Nonparametric Copula Density Estimation Methodologies

open access: yesMathematics
This paper proposes several methodologies whose objective consists of securing copula density estimates. More specifically, this aim will be achieved by differentiating bivariate least-squares polynomials fitted to Deheuvels’ empirical copulas, by making
Serge B. Provost, Yishan Zang
doaj   +1 more source

Quasar Identification Using Multivariate Probability Density Estimated from Nonparametric Conditional Probabilities

open access: yesMathematics, 2022
Nonparametric estimation for a probability density function that describes multivariate data has typically been addressed by kernel density estimation (KDE).
Jenny Farmer   +2 more
doaj   +1 more source

Radar Target Recognition Based on Semiparametric Density Estimation of SLC

open access: yesLeida xuebao, 2012
In order to solve the problem of the decline of accuracy when using the nonparametric method—Stochastic Learning of the Cumulative (SLC) to estimate the density of High-Resolution Range Profile (HRRP) in radar target recognition under the condition that ...
Cui Shan-shan   +2 more
doaj   +1 more source

Convex Optimization in R

open access: yesJournal of Statistical Software, 2014
Convex optimization now plays an essential role in many facets of statistics. We briefly survey some recent developments and describe some implementations of these methods in R .
Roger Koenker, Ivan Mizera
doaj   +1 more source

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