The paper deals with the problem of determining the chemical balance weighing designs satisfying the criterion of D-optimality under assumption that the measurement errors are equally correlated and they have the same ...

The article presents a proposal of the test for detecting changes in trend. The proposed procedure refers to the permutation test. The use of this procedure allowed the adoption of fairly general assumptions. The proposed ...

Feature selection methods are usually classified into three groups: filters, wrappers and embedded methods. The second important criterion of their classification is an individual or multivariate approach to evaluation of ...

The objective of the article is the comparative analysis of Likert rating scale based on the following range of response categories, i.e. 5, 7, 9 and 11 in context of the appropriate process of factors extraction in ...

The purpose of the paper is to evaluate the effect of a professional effectiveness enhancing programme on unemployment spells. The analysed programme was implemented by the Poviat Labour Office in Szczecin in 2009 and 2010 ...

Discriminant Analysis can be best defined as a technique which allows the classification of an individual into several distinctive populations on the basis of a set of measurements. Stepwise discriminant analysis (SDA) is ...

Since its inception at the end of the XX century, VaR risk measure has gained massive popularity. It is synthetic, easy in interpretation and offers comparability of risk levels reported by different institutions. However, ...

The paper presents chosen methods for estimating the ROC (Receiver Operating Characteristic) curve, including parametric and nonparametric procedures. Nonparametric approach may involve the use of empirical method or kernel ...