Results 1 to 10 of about 142,210 (310)

On Conditional Density Estimation [PDF]

open access: yesStatistica Neerlandica, 2002
With the aim of mitigating the possible problem of negativity in the estimation of the conditional density function, we introduce a so‐called re‐weighted Nadaraya‐Watson (RNW) estimator. The proposed RNW estimator is constructed by a slight modification of the well‐known Nadaraya‐Watson smoother. With a detailed asymptotic analysis, we demonstrate that
de Gooijer, J.G., Zerom Godefay, D.
openaire   +5 more sources

Empirical Bayes Conditional Density Estimation

open access: yesStatistica, 2015
The problem of nonparametric estimation of the conditional density of a response, given a vector of explanatory variables, is classical and of prominent importance in many prediction problems since the conditional density provides a more comprehensive ...
Catia Scricciolo
doaj   +5 more sources

Least-Squares Conditional Density Estimation

open access: yesIEICE Transactions on Information and Systems, 2010
Estimating the conditional mean of an input-output relation is the goal of regression. However, regression analysis is not sufficiently informative if the conditional distribution has multi-modality, is highly asymmetric, or contains heteroscedastic noise. In such scenarios, estimating the conditional distribution itself would be more useful.
Masashi Sugiyama   +2 more
exaly   +3 more sources

A Review of Copula-Based Approach for Water Resources Time Series [PDF]

open access: yesWater Harvesting Research, 2023
This research investigates the utilization of copula functions in the water resources field, encompassing meteorological and hydrological aspects. A review of the Web of Sciences archive revealed 15143 studies featuring copula keywords.
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

Frequency Analysis and Joint Simulation of Qualitative Variables of River Flow Using Copula Functions [PDF]

open access: yesWater Harvesting Research, 2022
In this study, in order to analyze the frequency of surface water quality variables (EC-Cl and EC-SO4) and to simulate the dependent variables, the applicability of copula-based functions was addressed. Since meteorological and hydrological variables are
Gholamreza Ahangi   +2 more
doaj   +1 more source

Flood routing via a copula-based approach

open access: yesHydrology Research, 2021
Floods are among the most common natural disasters that if not controlled may cause severe damage and high costs. Flood control and management can be done using structural measures that should be designed based on the flood design studies. The simulation
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

Analyzing the conditional behavior of rainfall deficiency and groundwater level deficiency signatures by using copula functions

open access: yesHydrology Research, 2020
The complex hydrological events such as storm, flood and drought are often characterized by a number of correlated random variables. Copulas can model the dependence structure independently of the marginal distribution functions and provide multivariate ...
Mohammad Nazeri Tahroudi   +3 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

Mixture Density Conditional Generative Adversarial Network Models (MD-CGAN)

open access: yesSignals, 2021
Generative Adversarial Networks (GANs) have gained significant attention in recent years, with impressive applications highlighted in computer vision, in particular. Compared to such examples, however, there have been more limited applications of GANs to
Jaleh Zand, Stephen Roberts
doaj   +1 more source

The Estimation of Conditional Densities [PDF]

open access: yes, 2000
We discuss a number of issues in the smoothed nonparametric estimation of kernel conditional probability density functions for stationary processes. The kernel conditional density estimate is a ratio of joint and marginal density estimates. We point out the different implications of leading choices of bandwidths in numerator and denominator for the ...
Xiaohong Chen   +2 more
openaire   +3 more sources

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