Results 11 to 20 of about 233,915 (272)

ANALISIS PORTOFOLIO SAHAM LQ45 MENGGUNAKAN FUNGSI UTILITAS KUADRATIK

open access: yesE-Jurnal Matematika, 2013
Utility function can use to give risk preference for investors who want to get the benefits gained meets investment targets. Quadratic utility functions on optimal portfolio is strongly influenced by the expected return and standard deviation.
KADEK FRISCA AYU DEVI   +2 more
doaj   +1 more source

Application of random regression models for genetic analysis of 305-d milk yield over different lactations of Iranian Holsteins [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2017
Objective During the last decade, genetic evaluation of dairy cows using longitudinal data (test day milk yield or 305- day milk yield) using random regression method has been officially adopted in several countries.
Mahdi Elahi Torshizi   +2 more
doaj   +1 more source

The Garman–Klass Volatility Estimator Revisited

open access: yesRevstat Statistical Journal, 2011
The Garman–Klass unbiased estimator of the variance per unit time of zero-drift Brownian Motion, is quadratic in the range-based financial-type data CLOSE−OPEN, MAX −OPEN , OPEN −MIN reported on regular time windows. Its variance, 7.4 times smaller than
Isaac Meilijson
doaj   +1 more source

Optimization of Quantum Monte Carlo Wave Functions Using Analytical Energy Derivatives [PDF]

open access: yes, 1999
An algorithm is proposed to optimize quantum Monte Carlo (QMC) wave functions based on New ton's method and analytical computation of the first and second derivatives of the variati onal energy. This direct application of the variational principle yields
Lin, Xi   +2 more
core   +2 more sources

Random regression models with B-splines to estimate genetic parameters for body weight of young bulls in performance tests

open access: yesRevista Brasileira de Zootecnia, 2018
The objective of this study was to estimate genetic parameters for body weight of beef cattle in performance tests. Different random regression models with quadratic B-splines and heterogeneous residual variance were fitted to estimate covariance ...
Daiane Cristina Becker Scalez   +5 more
doaj   +1 more source

Quadratic functional estimation in inverse problems [PDF]

open access: yes, 2009
We consider in this paper a Gaussian sequence model of observations $Y_i$, $i\geq 1$ having mean (or signal) $\theta_i$ and variance $\sigma_i$ which is growing polynomially like $i^\gamma$, $\gamma >0$.
Butucea, Cristina, Méziani, Katia
core   +9 more sources

Joint Estimation Using Quadratic Estimating Function

open access: yesJournal of Probability and Statistics, 2011
A class of martingale estimating functions is convenient and plays an important role for inference for nonlinear time series models. However, when the information about the first four conditional moments of the observed process becomes available, the ...
Y. Liang, A. Thavaneswaran, B. Abraham
doaj   +1 more source

Genetic evaluation and selection response for growth in meat-type quail through random regression models using B-spline functions and Legendre polynomials

open access: yesAnimal, 2018
The objective was to estimate (co)variance functions using random regression models (RRM) with Legendre polynomials, B-spline function and multi-trait models aimed at evaluating genetic parameters of growth traits in meat-type quail.
L.F.M. Mota   +5 more
doaj   +1 more source

Distributed Verification of Rare Properties using Importance Splitting Observers [PDF]

open access: yes, 2015
Rare properties remain a challenge for statistical model checking (SMC) due to the quadratic scaling of variance with rarity. We address this with a variance reduction framework based on lightweight importance splitting observers.
Jegourel, Cyrille   +3 more
core   +5 more sources

Revisiting the functional bootstrap in TFHE

open access: yesTransactions on Cryptographic Hardware and Embedded Systems, 2021
The FHEW cryptosystem introduced the idea that an arbitrary function can be evaluated within the bootstrap procedure as a table lookup. The faster bootstraps of TFHE strengthened this approach, which was later named Functional Bootstrap (Boura et al ...
Antonio Guimarães   +2 more
doaj   +1 more source

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