In recent years, with the fast development of computer and Internet technologies, text-mining computer methods are becoming more and more important. Computer systems capacities can be further used in ...such areas as text summarization, information retrieval, text correcting, determining text subject, machine text translation, creating lexicons, determining text sentiment. This monograph is focused on sentiment analysis in the most popular meaning of this phrase i.e. on the sentiment of the whole document. The problems of binary classification (two document groups), staying away from external sources, using the training set but in the possibly smallest size, were emphasized. The monograph’s targets are: providing a comparative review of sentiment analysis methods to be found in literature, investigating the quality of selected methods of document sentiment classification in applications to Polish language written documents, proposing new methods which would upgrade the classification quality or possess other advantages. An original method with simple interpretation has been proposed which proved to be better than standard methods applied to classify English language documents, especially in the case of documents corpora with similar number of documents in both classes. The research was carried out on thirteen sets of documents from different independent sources.
The book handed over to the Readers includes the scientific, didactic and organizational achievements of statisticians and demographers of the University of Lodz. It can be treated as a continuation ...of the monograph entitled "Lodz academic statistics", published in 2020. The aim of the book is to present the achievements of statisticians and demographers of the University of Lodz, including precursors who have made a significant contribution to the development of statistics and demography as scientific disciplines and their wide application in many fields of knowledge. The occasion to publish this book was the 77th anniversary of the first lectures conducted by academic teachers at the University of Lodz and at the Lodz Branch of the Warsaw School of Economics. The presented scientific work covers a period of over one hundred years and has contributed to the significant development of statistics and demography in numerous higher education institutions, mainly at the University of Lodz. The Lodz community also supported other universities in Poland by promoting doctors and habilitated doctors, managing scientific projects and by organizing international conferences, including Multivariate Statistical Analysis conference, which will have its 40th edition in 2022. The book is scientific and popular science. It enriches the information on the scientific and didactic achievements of statisticians and demographers of the University of Lodz against the background of Polish, and partly also global, statistics and demography, in the process of historical development. Based on source documents, these achievements were presented against the background of Polish statistical and demographic thought ant its contribution to international statistical congresses.
Research into the profitability dynamics of the banking sector is continuously current, significant, and complex. Bearing that in mind, this paper measures and analyzes the profitability dynamics of ...the banking sector in Serbia using FLMAW MARCOS methods. The empirical results obtained by applying the given methodology show that the five best years of achieved profitability in the banking sector in Serbia in the period 2008 - 2022 are in order: 2018, 2017, 2008, 2019 and 2022. The worst profitability was achieved in 2013. Recently, the profitability of the banking sector in Serbia has improved. It was influenced by the economic climate, management of human resources, assets, capital, sales of banking products, costs, and profits. The digitalization of the entire business plays a significant role in this. The impact of the Covid-19 corona virus pandemic, as well as the global energy crisis, is significant. In order to improve the profitability of the banking sector in Serbia, it is necessary to manage human resources, assets, capital, sales, costs and profits as efficiently as possible and adapt to changes in the economic climate.
The purpose of the article/hypothesis: In recent years, there has been a noticeable and dynamic development of micromobile equipment intended for the transport of people. These types of vehicles are ...known as personal transport equipment (PTE). Like any road vehicle, PTE can also cause numerous accidents and collisions. A natural consequence of damage related to the use of PTE is posing the question about securing the interests of the aggrieved parties. Considering the above, the aim of this paper is to present the role of civil liability insurance for users of personal transport equipment in the context of claims related to the use of this type of vehicles and to provide a brief description of insurance products available on the market. The paper presents the following thesis: although the regulations do not oblige PTE users to have a civil liability insurance policy, a wide catalogue of adverse events related to the PTE use requires the popularisation of insurance protection for users of this type of vehicles. Such insurance protection should cover: equipment users, renters, sellers, and operators, as well as households. Methodology: The paper is theoretical and analytical in its nature. In addition to the review of the available literature, the existing offer of voluntary insurance for PTE users is also analysed. Results of the research: Insurance addressed to users of personal transport equipment is a relatively new product on the market and still few insurance companies have it in their offer. PTE users can utilise their civil liability insurance often being part of their home insurance in their private life, which offers protection in the event of damage to third parties. One of the solutions leading to the dissemination of insurance protection could be a proposal of insurance tailored to the type of risk and short-term use associated with this kind of equipment (e.g. travel-type insurance).
