Results 31 to 40 of about 18,318 (97)

Legendre polynomial order selection in projection pursuit density estimation

open access: yesLietuvos Matematikos Rinkinys, 2013
Projection pursuit method and its application to probability density estimation is discussed. Method proposed by J.H. Friedman, based on projection density estimation using orthogonal Legendre polynomials, is analysed.
Mindaugas Kavaliauskas
doaj   +1 more source

Analysis of Option Butterfly Portfolio Models Based on Nonparametric Estimation Deep Learning Method

open access: yesJournal of Function Spaces, 2023
The option butterfly portfolio is the commonly option arbitrage strategy. In reality, because the distribution of the option state price density (SPD) function is not normal and unknown, so the nonparametric deep learning methods to estimate option ...
Xiangyu Ge   +4 more
doaj   +1 more source

pyrichlet: A Python Package for Density Estimation and Clustering Using Gaussian Mixture Models

open access: yesJournal of Statistical Software
Bayesian nonparametric models have proven to be successful tools for clustering and density estimation. While there exists a nourished ecosystem of implementations in R, for Python there are only a few. Here we develop a Python package called pyrichlet,
Fidel Selva   +2 more
doaj   +1 more source

Nonparametric Probability Density Function Estimation Using the Padé Approximation

open access: yesAlgorithms
Estimating the Probability Density Function (PDF) of observed data is crucial as a problem in its own right, and also for diverse engineering applications.
Hamid Reza Aghamiri   +3 more
doaj   +1 more source

On using nonparametric approaches for precipitation estimation

open access: yesITM Web of Conferences, 2018
Nonparametric density estimation methods have been used for precipitation estimation for decades. The new approach for estimating the density proposed recently by Geenens and Wang appears to offer advantages over them as far as their behavior in the tail
Grządziel Mariusz
doaj   +1 more source

A Novel Nonparametric Estimation for Conditional Copula Functions Based on Bayes Theorem

open access: yesIEEE Access, 2019
Conditional copula which measures the conditional dependence among variables, possesses a special position in copula field. In this article, based on Bayes theorem, we derive three kinds of conditional copula functions as the product of the corresponding
Xinyao Li, Weihong Zhang, Liangli He
doaj   +1 more source

Trivariate Joint Distribution Modelling of Compound Events Using the Nonparametric D-Vine Copula Developed Based on a Bernstein and Beta Kernel Copula Density Framework

open access: yesHydrology, 2022
Low-lying coastal communities are often threatened by compound flooding (CF), which can be determined through the joint occurrence of storm surges, rainfall and river discharge, either successively or in close succession.
Shahid Latif, Slobodan P. Simonovic
doaj   +1 more source

Feature Screening via Mutual Information Learning Based on Nonparametric Density Estimation

open access: yesJournal of Mathematics, 2022
With the advent of the era of big data, feature selection in high- or ultra-high-dimensional data is increasingly important in statistics and machine learning fields.
Shengbin Zhou, Tao Wang, Yejin Huang
doaj   +1 more source

Fault Diagnosis Method of Wind Turbine Pitch Angle Based on PCA-KNN Fusion Algorithm

open access: yesZhongguo dianli, 2021
With regard to the four main fault types of the pitch angle of a wind turbine pitch system and the data analysis of the wind turbine, an identification method of abnormal pitch angles of a wind turbine is proposed, depending on nonparametric kernel ...
Xi CHEN   +5 more
doaj   +1 more source

Local linear approach: Conditional density estimate for functional and censored data

open access: yesDemonstratio Mathematica, 2022
Let YY be a random real response, which is subject to right censoring by another random variable CC. In this paper, we study the nonparametric local linear estimation of the conditional density of a scalar response variable and when the covariable takes ...
Benkhaled Abdelkader, Madani Fethi
doaj   +1 more source

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