Showing 1 - 10 of 447
We study nonparametric estimation of density functions for undirected dyadic random variables (i.e., random variables …, of nodes. This di?ers from the results for nonparametric estimation of densities and regres-sion functions for monadic …
Persistent link: https://www.econbiz.de/10012053034
Numerous heavy-tailed distributions are used for modeling financial data and in problems related to the modeling of economics processes. These distributions have higher peaks and heavier tails than normal distributions. Moreover, in some situations, we cannot observe complete information about...
Persistent link: https://www.econbiz.de/10011606719
The general Pareto distribution (GPD) has been widely used a lot in the extreme value for example to model exceedance over a threshold. Feature of The GPD that when applied to real data sets depends substantially and clearly on the parameter estimation process. Mostly the estimation is preferred...
Persistent link: https://www.econbiz.de/10012860148
In this paper, we propose a copula-free approach for modeling correlated frequency distributions using an Erlang-based multivariate mixed Poisson distribution. We investigate some of the properties possessed by this class of distributions and derive a tailor-made expectation-maximization (EM)...
Persistent link: https://www.econbiz.de/10013002480
Persistent link: https://www.econbiz.de/10012176489
of LATE rely on parametric or semiparametric methods. In this paper, a nonparametric estimator for the estimation of LATE …In this paper nonparametric instrumental variable estimation of local average treatment effects (LATE) is extended to … on much weaker assumptions than the identification of average treatment effects in other nonparametric instrumental …
Persistent link: https://www.econbiz.de/10010262665
Propensity score matching is widely used in treatment evaluation to estimate average treatment effects. Nevertheless, the role of the propensity score is still controversial. Since the propensity score is usually unknown and has to be estimated, the efficiency loss arising from not knowing the...
Persistent link: https://www.econbiz.de/10010262697
There is increasing demand for models of time-varying and non-Gaussian dependencies for mul- tivariate time-series. Available models suffer from the curse of dimensionality or restrictive assumptions on the parameters and the distribution. A promising class of models are the hierarchical...
Persistent link: https://www.econbiz.de/10010270704
In this article, we present new ideas concerning Non-Gaussian Component Analysis (NGCA). We use the structural assumption that a high-dimensional random vector X can be represented as a sum of two components - a lowdimensional signal S and a noise component N. We show that this assumption...
Persistent link: https://www.econbiz.de/10010270736
This paper provides a survey of three families of flexible parametric probability density functions (the skewed generalized t, the exponential generalized beta of the second kind, and the inverse hyperbolic sine distributions) which can be used in modeling a wide variety of econometric problems....
Persistent link: https://www.econbiz.de/10010295290