The paper aims to present directions for the growth‑enhancing reconstruction of the tax system in Poland. It presents a diagnosis of the main strengths and weaknesses of that system. Based on this diagnosis and a review ...

The paper focuses on the tourism market in the face of the SARS‑CoV–2 pandemic. Its aim is to verify whether Polish tourism in this period actually recorded such a significant drop in interest. The research is based on ...

It is estimated that approximately 80% of all data gathered by companies are text documents. This article is devoted to one of the most common problems in text mining, i.e. text classification in sentiment analysis, which ...

Here, we consider a new construction method of determining highly D-efficient spring balance weighing designs in classes in which a D-optimal design does not exist. We give some conditions determining the relations between ...

This work is intended as an attempt to illustrate and compare the pattern of fertility in European countries: Belarus, Croatia, Hungary, Poland, Portugal, Spain, Sweden, and Switzerland. It deals with the analysis of ...