The item count method is a way of asking sensitive survey questions which protects the anonymity of the respondents by randomization before the interview. It can be used to estimate the probability of sensitive behaviour and to model how it depends on explanatory variables. We analyse item count...

In this paper, we consider the missing information in determining the optimal allocation of removals in a Type II progressive censoring scheme. We provide a simple expression and a recurrence relation for the missing information. Then we provide a simple way of determining an optimal censoring...

For the evaluation of policy reforms numerous governments use, among other sources, administrative social security data. Although this data is large and contains detailed information about policy measures, it inherits several limitations due to the administrative process of generating data. This...

In a hidden Markov model, one "estimates" the state of the hidden Markov chain at t by computing via the forwards-backwards algorithm the conditional distribution of the state vector given the observed data. The covariance matrix of this conditional distribution measures the information lost by...

For the evaluation of policy reforms numerous governments use, among other sources,administrative social security data. Although this data is large and contains detailed in-formation about policy measures, it inherits several limitations due to the administrativeprocess of generating data. This...