The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The purpose of the article was to point out the possibilities of applying metaanalysis in economic science and particularly in econometrics. So far, in Poland meta-analyses were applied in behavioral sciences, medicine and some in economic studies and management, whereas this method has been used used elsewhere since the 1970s for solving a wide spectrum of problems in many fields of study. The present...
Consensus methods allow to resolve the knowledge conflicts, among other things, in supply chain management systems. The purpose of the article is to elaborate the distance function between the variants generated by the system SCM. This is one of the stages of the consensus determining process. The first part of the article presents a characteristic of knowledge conflicts, consensus methods and a definition...
The main goal of this article is to present extreme market risk evaluation methods which go beyond the standard Value at Risk methodology. Two main approaches: Expected Tail Loss (ETL) and Extreme Value Theory (EVT) are presented and then applied to simulate interest risk stemming from government debt portfolio held by Polish banks. The two methods seem to be very useful to estimate real market risk...
In this paper we present the tools used in the modeling of distributions with fat tails in the theory of extreme values. We present three tools: the sample distribution function, the histograms for grouped data and the kernel densities. The latter is described in detail. The presented examples show the application of the kernel densities to modeling the generalized Pareto distributions.
The problem of monetary aspect of welfare in employees’ household was undertaken in this paper. In order to identify the households in danger of poverty, the binary logit models approach was applied. It was found that the estimation of models without the interaction terms results in misspecification error. Due to this, the interaction terms, between the socio-economic factors of households were included...
We discuss an original price index formula presented in Białek [2012a] and Białek [2012b]. The inspiration for this discussion are the correlated notes of Prof. Peter von der Lippe. This article presents the author’s point of view on the problems considered by Prof. Peter von der Lippe and some other properties of the discussed formula.
The author focuses on income tax forecasting. He compares the different forecasting methodologies. He also compares his solution to the official annual forecasts in the Slovak Republic. He chose the quarters of years as the time units.
An important part of customer satisfaction surveys of the acquired service is to identify the key factors affecting its quality. Since customer satisfaction is a complex category thus its measurement and analysis require the use of multivariate statistical methods. One of them is the CART method (Classification and Regression Trees). Its use in the identification of the key determinants of the quality...
The aim of this paper is to propose and present adaptations of unfolding analysis for symbolic data. In the article, the basic terms of unfolding analysis and symbolic data are presented. The paper presents two approaches – the internal hybrid approach and the external symbolic-numeric approach. In the empirical part, the external symbolic-numeric unfolding for LCD brands is presented. Symbolic multidimensional...
If a correlated pair (R(k), R0(k)) is a regular correlated pair, then the coefficient measuring the quality of such a pair satisfies the inequality: r2(k) ≥ F(k)...
There is a need to measure the efficiency and effectiveness of higher education in its various aspects, including the area of non-monetary benefits of higher education. Education relates to the wider economic and social effects and human welfare depends partly on earnings but also on non-monetary outcomes that all trace back to education in various ways. There exist positive relationships between...
The aim of this paper is to propose a hypothesis explaining the rather surprising choices of Polish prospective students, who prefer to study fields that do not entail a high salary in the future over those that increase the likelihood of getting a well-paid job. Our hypothesis says that one of the causes of such decisions is a norm that says that a person who did not study is less worthy than a college...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.