Data Analysis and Classification

Part 1: Methodology<div>&nbsp;<div>Chapter 1 - Evaluation of Two-Step Spectral Clustering Algorithm for Large Untypical Data Sets (Andrzej Dudek)</div><div>&nbsp;</div><div>Chapter 2 - Determining the Number of Groups in Cluster Analysis Using Classical Indexes and Stability Measures – Comparison of Results (Dorota Rozmus)</div><div><br></div><div>Chapter 3 - Identification of the Words Most Frequently Used by Different Generations of Twitter Users&nbsp; (Agata Majkowska, Kamila Migdał-Najman, Krzysztof Najman and Katarzyna Raca)</div><div><br></div><div>Chapter 4 - Classification Algorithms Applications for Information Security on the Internet: a Review (Michał Bryś)</div><div><br></div><div>Chapter 5 - Outlier Detection with the Use of Isolation Forests (Krzysztof Najman and Krystian Zieliński)</div><div><br></div><div>Part 2: Application in Finance</div><div><br></div><div>Chapter 6 - Propositions of Transformations of Asymmetrical Nominants into Stimulants on the Example of Chosen Financial Ratios ( Barbara Batóg and Katarzyna Wawrzyniak)</div><div><br></div><div>Chapter 7 - Gini Regression in The Capital Investment Risk Assessment – Sensitivity Risk Measures in Portfolio Analysis (Grażyna Trzpiot).- Part 3: Application in Economics</div><div><br></div><div>Chapter 8 - Enterprise Dark Data (Katarzyna Raca)</div><div><br></div><div>Chapter 9 - The Significance of Medical Science Issues in Research Papers Published in the Field of Economics (Urszula Cieraszewska, Monika Hamerska, Paweł Lula and Marcela Zembura)</div><div><br></div><div>Chapter 10 - Application of Duration Analysis Methods in the Study of the Exit of a Real Estate Sale Offer from the Offer Database System (Ewa Putek-Szeląg, Anna Gdakowicz)</div><div><br></div><div>Chapter 11 - Is Society Ready for Long-Term Investments? – Profiles of Electricity Users in Silesia (Sylwia Słupik and Joanna Trzęsiok)</div><div>&nbsp;</div><div>Chapter 12 - The Use of the Spatial Taxonomic Measure of Development to Assess the Tourist Attractiveness of Districts of the Lesser Poland Province(Jacek Wolak).-&nbsp;</div><div>Part 4: Application in Social Issues</div><div>&nbsp;</div><div>Chapter 13 - Models of Competing Events in Assessing the Effects of the Transition of Unemployed People Between the States of Registration and De-registration (Beata Bieszk-Stolorz).-&nbsp;</div><div><br></div><div>Chapter 14 - Direct Adjusted Survival Probabilities in the Analysis of Finding a Job by the Unemployed Depending on Their Individual Characteristics(Wioletta Grzenda)</div><div><br></div><div>Chapter 15 - Europe 2020 Strategy – Objective Evaluation of Realization and Subjective Assessment by Seniors as Beneficiaries of Social Assumptions (Klaudia Przybysz, Agnieszka Stanimir and Marta Wasiak)</div><div><br></div><div>Chapter 16 - Do Seniors Get to the Disco by Bike or in a Taxi? – Classification of Seniors According to Their Preferred Means of Transport (Joanna Kos-Łabędowicz and Joanna Trzęsiok)</div><div><br></div><div>Part 5: Application with COVID-19 Data</div><div>&nbsp;</div><div>Chapter 17 - The Impact of the COVID-19 Pandemic on the Economies of European Countries in the Period January-September 2020 Based on Economic Indicators (Ewelina Nojszewska and Agata Sielska)</div><div><br></div><div>Chapter 18 - Modelling the Risk of Foreign Divestment in the Visegrad Group Countries During the COVID-19 Pandemic (Marcin Salamaga)</div><div>&nbsp;</div><div>Chapter 19 - Analysis of COVID-19 Dynamics in EU Countries Using the Dynamic Time Warping Method and ARIMA Models (Joanna Landmesser).<p></p></div></div>