Results 11 to 20 of about 415,263 (295)

A New Kernel Estimator of Copulas Based on Beta Quantile Transformations

open access: yesMathematics, 2021
A copula is a multivariate cumulative distribution function with marginal distributions Uniform(0,1). For this reason, a classical kernel estimator does not work and this estimator needs to be corrected at boundaries, which increases the difficulty of ...
Catalina Bolancé, Carlos Alberto Acuña
doaj   +1 more source

Probability density estimation with tunable kernels using orthogonal forward regression [PDF]

open access: yes, 2009
A generalized or tunable-kernel model is proposed for probability density function estimation based on an orthogonal forward regression procedure. Each stage of the density estimation process determines a tunable kernel, namely, its center vector and ...
Chen, S., Harris, Chris J., Hong, Xia
core   +1 more source

Kernel density estimation and its application

open access: yesITM Web of Conferences, 2018
Kernel density estimation is a technique for estimation of probability density function that is a must-have enabling the user to better analyse the studied probability distribution than when using a traditional histogram. Unlike the histogram, the kernel
Węglarczyk Stanisław
doaj   +1 more source

Analisis Perbandingan Fungsi Kernel dalam Perhitungan Economic Capital untuk Risiko Operasional Menggunakan Bahasa Pemrograman Python

open access: yesMatematika, 2018
Abstrak. Pada penelitian yang dilakukan oleh Setiawan dkk, menyatakan bahwa metode loss distribution approach dengan pendekatan kernel density estimation mampu menghasilkan nilai economic capital yang lebih efisien sebesar 1,6% - 3,2% dibandingkan dengan
Erwan Setiawan, Ramdhan F Suwarman
doaj   +1 more source

A Deconvolutional Deblurring Algorithm Based on Short- and Long-Exposure Images

open access: yesSensors, 2022
An iterative image restoration algorithm, directed at the image deblurring problem and based on the concept of long- and short-exposure deblurring, was proposed under the image deconvolution framework by investigating the imaging principle and existing ...
Yang Bai, Zheng Tan, Qunbo Lv, Min Huang
doaj   +1 more source

Improved parameter estimation of Time Dependent Kernel Density by using Artificial Neural Networks

open access: yesJournal of Finance and Data Science, 2018
Time Dependent Kernel Density Estimation (TDKDE) used in modelling time-varying phenomenon requires two input parameters known as bandwidth and discount to perform.
Xing Wang   +2 more
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

Time-frequency represetation of radar signals using Doppler-Lag block searching Wigner-Ville distribution [PDF]

open access: yes, 2018
Radar signals are time-varying signals where the signal parameters change over time. For these signals, Quadratic Time-Frequency Distribution (QTFD) offers advantages over classical spectrum estimation in terms of frequency and time resolution but it ...
Hamdi, Muhammad Noor Muhammad   +1 more
core   +3 more sources

Kernel Quantile Estimators [PDF]

open access: yesJournal of the American Statistical Association, 1990
Abstract For an estimator of quantiles, the efficiency of the sample quantile can be improved by considering linear combinations of order statistics, that is, L estimators. A variety of such methods have appeared in the literature; an important aspect of this article is that asymptotically several of these are shown to be kernel estimators with a ...
Simon J. Sheather, J. S. Marron
openaire   +1 more source

Computationally Efficient Bootstrap Expressions for Bandwidth Selection in Nonparametric Curve Estimation

open access: yesProceedings, 2018
Bootstrap methods are used for bandwidth selection in: (1) nonparametric kernel density estimation with dependent data (smoothed stationary bootstrap and smoothed moving blocks bootstrap), and (2) nonparametric kernel hazard rate estimation (smoothed ...
Inés Barbeito, Ricardo Cao
doaj   +1 more source

Home - About - Disclaimer - Privacy