Results 41 to 50 of about 6,072 (305)

Estimating Renyi Entropy of Several Exponential Distributions Under an Asymmetric Loss Function

open access: yesRevstat Statistical Journal, 2017
The present paper takes into account the estimation of the Renyi entropy of several exponential distributions under a linex loss function. The models under study are (i) several exponential distributions with a common scale parameter and unknown but ...
Suchandan Kayal , Somesh Kumar
doaj   +1 more source

An analytical study of equity derivatives traded on the NSE of India

open access: yesCogent Business & Management, 2022
To analyze day trading dynamics for Nifty Index futures and options contracts, a detailed study is steered to understand the quantum of volume traded and how volume traded affects the underlying volatility.
Parizad Phiroze Dungore   +2 more
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Efficient estimation of the density and distribution functions of Weibull-Burr XII distribution

open access: yesAlexandria Engineering Journal
This study takes into account the efficient estimation of the probability density function (PDF) of the Weibull-Burr XII distribution and the cumulative distribution function (CDF), which allows for greater flexibility than many other generalized ...
Amulya Kumar Mahto   +4 more
doaj   +1 more source

Bias Reduction of Maximum Likelihood Estimates for an Asymmetric Class of Power Models with Applications

open access: yesRevstat Statistical Journal, 2023
In this paper we study some methods to reduce the bias for maximum likelihood estimation in the general class of alpha power models, specifically for the shape parameter. We find the modified maximum likelihood estimator using Firth's method and we show
Yolanda M. Gómez   +4 more
doaj  

Multiple Comparisons for Exponential Median Lifetimes with the Control Based on Doubly Censored Samples

open access: yesMathematics, 2020
Under doubly censoring, the one-stage multiple comparison procedures with the control in terms of exponential median lifetimes are presented. The uniformly minimum variance unbiased estimator for median lifetime is found.
Shu-Fei Wu
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Area disease estimation based on sentinel hospital records. [PDF]

open access: yesPLoS ONE, 2011
BackgroundPopulation health attributes (such as disease incidence and prevalence) are often estimated using sentinel hospital records, which are subject to multiple sources of uncertainty.
Jin-Feng Wang   +10 more
doaj   +1 more source

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

open access: yesAdvanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth   +8 more
wiley   +1 more source

Minimum variance unbiased estimation based on bootstrap iterations [PDF]

open access: yesProceedings of the 23rd International Conference on Information Technology Interfaces, 2001. ITI 2001., 2001
Practical computation of the minimum variance unbiased estimator (MVUE) is often a difficult, if not impossible, task, even though general statistical theory assures its existence under regularity conditions. We propose a new approach, based on infinitely many iterations of bootstrap bias correction, to calculating the MVUE approximately.
openaire   +2 more sources

Home - About - Disclaimer - Privacy