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In small samples and especially in the case of small true default probabilities, standard approaches to credit default probability estimation have certain drawbacks. Most importantly, standard estimators tend to underestimate the true default probability which is of course an undesirable...
Persistent link: https://www.econbiz.de/10013113964
Likelihood based inference for multi-state latent factor intensity models is hindered by the fact that exact closed-form expressions for the implied data density are not available. This is a common and well-known problem for most parameter driven dynamic econometric models. This paper reviews,...
Persistent link: https://www.econbiz.de/10011374420
We studied the effects of sample size and distribution scale/shape for 3 types of skewness (g1, G1, and b1) and kurtosis (g2, G2, and b2) using 18 simulated probability distributions. In general, skewness and kurtosis always increased with increasing sample size. The order in the skewness...
Persistent link: https://www.econbiz.de/10014242098
Sample quantiles are consistent estimators for the true quantile and satisfy central limit theorems (CLTs) if the underlying distribution is continuous. If the distribution is discrete, the situation is much more delicate. In this case, sample quantiles are known to be not even consistent in...
Persistent link: https://www.econbiz.de/10011490510
The computing time for Markov Chain Monte Carlo (MCMC) algorithms can be prohibitively large for datasets with many observations, especially when the data density for each observation is costly to evaluate. We propose a framework where the likelihood function is estimated from a random subset of...
Persistent link: https://www.econbiz.de/10010500806
In simple static linear simultaneous equation models the empirical distributions of IV and OLS are examined under alternative sampling schemes and compared with their first-order asymptotic approximations. We demonstrate that the limiting distribution of consistent IV is not affected by...
Persistent link: https://www.econbiz.de/10013097341
While permutation tests and bootstraps have very wide-ranging application, both share a common potential drawback: as data-intensive resampling methods, both can be runtime prohibitive when applied to large or even medium-sized data samples drawn from large datasets. The data explosion over the...
Persistent link: https://www.econbiz.de/10012974353
Persistent link: https://www.econbiz.de/10010190991
This paper proposes a Differential-Independence Mixture Ensemble (DIME) sampler for the Bayesian estimation of macroeconomic models. It allows sampling from particularly challenging, high-dimensional black-box posterior distributions which may also be computationally expensive to evaluate. DIME...
Persistent link: https://www.econbiz.de/10013473686