Showing 1 - 10 of 78
This paper analyses the benefits from female education (who gains and in what ways) and the constraints (direct and opportunity costs, reflecting economics and tradition). It then outlines promising approaches for increasing female education. The demand for female education can be strengthened...
Persistent link: https://www.econbiz.de/10010945480
The objectives, content, pedagogy and assessment of science education at various stages are examined.
Persistent link: https://www.econbiz.de/10010945571
Report of a Department of Education commissioned survey of unit costs of first and second level schools in 1990.
Persistent link: https://www.econbiz.de/10011269266
This paper studies the asymptotic behavior of the least squares estimators in segmented multiple regression. For a model with more than one partitioning variable, each of which has one or more change-points, we study the asymptotic properties of the estimated change-points and regression...
Persistent link: https://www.econbiz.de/10005199628
While the noncentral Wishart distribution is generally introduced as the distribution of the random symmetric matrix where Y1,...,Yn are independent Gaussian rows in with the same covariance, the present paper starts from a slightly more general definition, following the extension of the...
Persistent link: https://www.econbiz.de/10005199635
In this paper we consider robust parameter estimation based on a certain cross entropy and divergence. The robust estimate is defined as the minimizer of the empirically estimated cross entropy. It is shown that the robust estimate can be regarded as a kind of projection from the viewpoint of a...
Persistent link: https://www.econbiz.de/10005199754
Consider the problem of estimating the mean vector [theta] of a random variable X in , with a spherically symmetric density f(||x-[theta]||2), under loss ||[delta]-[theta]||2. We give an increasing sequence of bounds on the shrinkage constant of Stein-type estimators depending on properties of...
Persistent link: https://www.econbiz.de/10005199793
In this paper, the problem of estimating the precision matrix of a multivariate Kotz type model is considered. First, using the quadratic loss function, we prove that the unbiased estimator , where denotes the sample sum of product matrix, is dominated by a better constant multiple of , denoted...
Persistent link: https://www.econbiz.de/10005221243
We construct a broad class of generalized Bayes minimax estimators of the mean of a multivariate normal distribution with covariance equal to [sigma]2Ip, with [sigma]2 unknown, and under the invariant loss ||[delta](X)-[theta]||2/[sigma]2. Examples that illustrate the theory are given. Most...
Persistent link: https://www.econbiz.de/10005221360
Variance function estimation in multivariate nonparametric regression is considered and the minimax rate of convergence is established in the iid Gaussian case. Our work uses the approach that generalizes the one used in [A. Munk, Bissantz, T. Wagner, G. Freitag, On difference based variance...
Persistent link: https://www.econbiz.de/10005221415