Market microstructure noise is a challenge to high-frequency based estimation of the integrated variance, because the noise accumulates with the sampling frequency. In this paper, we analyze the impact of microstructure noise on the realized range-based variance and propose a bias-correction to...

Short memory models contaminated by level shifts have similar long-memory features as fractionally integrated processes. This makes it hard to verify whether the true data generating process is a pure fractionally integrated process when employing standard estimation methods based on the...

A modification of the self-perturbed Kalman filter of Park and Jun (1992) is proposed for the on-line estimation of models subject to parameter in stability. The perturbation term in the updating equation of the state covariance matrix is weighted by the measurement error variance, thus avoiding...

This paper presents the scoring and weighting methodology for calculation of the services trade restrictiveness indices (STRIs) for 18 sectors. The STRIs are composite indices taking values between zero and one, zero representing an open market and one a market completely closed to foreign...

Nowadays, academic journals of high standing rarely accept a conceptual idea in a paper not instantly accompanied by econometric estimates. The idea would almost certainly get rejected. Empirical validation based on past statistical data has produced an unfortunate backward orientation in...

This study analyses the situation of the Brazilian population vis-à-vis the Social Security System (SSS) using data from PNAD. We chose the 1982, 1992 and 2002 PNAD data to give a series of pictures of the Brazilian population at equal intervals but under different legal instances with respect...

It has often been claimed that it is impossible to measure human capabilities but within the methodological conventions of household survey design, we show that some non-financial capability indicators do already exist and we demonstrate how similar indicators, covering a wide range of life...

The calibration of option pricing models leads to the minimization of an error functional. We show that its usual specification as a root mean squared error implies fluctuating exotics prices and possibly wrong prices. We propose a simple and natural method to overcome these problems, illustrate...

We study the effect of attrition and other forms of non-response on the representativity over time of the Health and Retirement Study (HRS) sample born 1931-1941; the sample was initially drawn in 1992. Although some baseline characteristics of respondents do appear correlated with non-response over...