Part 1: Methodology Chapter 1 - Evaluation of Two-Step Spectral Clustering Algorithm for Large Untypical Data Sets (Andrzej Dudek) Chapter 2 - Determining the Number of Groups in Cluster Analysis Using Classical Indexes and Stability Measures - Comparison of Results (Dorota Rozmus)
Chapter 3 - Identification of the Words Most Frequently Used by Different Generations of Twitter Users (Agata Majkowska, Kamila Migdal-Najman, Krzysztof Najman and Katarzyna Raca)
Chapter 4 - Classification Algorithms Applications for Information Security on the Internet: a Review (Michal Bryś)
Chapter 5 - Outlier Detection with the Use of Isolation Forests (Krzysztof Najman and Krystian Zieliński)
Part 2: Application in Finance
Chapter 6 - Propositions of Transformations of Asymmetrical Nominants into Stimulants on the Example of Chosen Financial Ratios ( Barbara Batóg and Katarzyna Wawrzyniak)
Chapter 7 - Gini Regression in The Capital Investment Risk Assessment - Sensitivity Risk Measures in Portfolio Analysis (Grażyna Trzpiot).- Part 3: Application in Economics
Chapter 8 - Enterprise Dark Data (Katarzyna Raca)
Chapter 9 - The Significance of Medical Science Issues in Research Papers Published in the Field of Economics (Urszula Cieraszewska, Monika Hamerska, Pawel Lula and Marcela Zembura)
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)
Chapter 11 - Is Society Ready for Long-Term Investments? - Profiles of Electricity Users in Silesia (Sylwia Slupik and Joanna Trzęsiok) 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).- Part 4: Application in Social Issues 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).-
Chapter 14 - Direct Adjusted Survival Probabilities in the Analysis of Finding a Job by the Unemployed Depending on Their Individual Characteristics(Wioletta Grzenda)
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)
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-Labędowicz and Joanna Trzęsiok)
Part 5: Application with COVID-19 Data 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)
Chapter 18 - Modelling the Risk of Foreign Divestment in the Visegrad Group Countries During the COVID-19 Pandemic (Marcin Salamaga) Chapter 19 - Analysis of COVID-19 Dynamics in EU Countries Using the Dynamic Time Warping Method and ARIMA Models (Joanna Landmesser).
Chapter 3 - Identification of the Words Most Frequently Used by Different Generations of Twitter Users (Agata Majkowska, Kamila Migdal-Najman, Krzysztof Najman and Katarzyna Raca)
Chapter 4 - Classification Algorithms Applications for Information Security on the Internet: a Review (Michal Bryś)
Chapter 5 - Outlier Detection with the Use of Isolation Forests (Krzysztof Najman and Krystian Zieliński)
Part 2: Application in Finance
Chapter 6 - Propositions of Transformations of Asymmetrical Nominants into Stimulants on the Example of Chosen Financial Ratios ( Barbara Batóg and Katarzyna Wawrzyniak)
Chapter 7 - Gini Regression in The Capital Investment Risk Assessment - Sensitivity Risk Measures in Portfolio Analysis (Grażyna Trzpiot).- Part 3: Application in Economics
Chapter 8 - Enterprise Dark Data (Katarzyna Raca)
Chapter 9 - The Significance of Medical Science Issues in Research Papers Published in the Field of Economics (Urszula Cieraszewska, Monika Hamerska, Pawel Lula and Marcela Zembura)
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)
Chapter 11 - Is Society Ready for Long-Term Investments? - Profiles of Electricity Users in Silesia (Sylwia Slupik and Joanna Trzęsiok) 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).- Part 4: Application in Social Issues 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).-
Chapter 14 - Direct Adjusted Survival Probabilities in the Analysis of Finding a Job by the Unemployed Depending on Their Individual Characteristics(Wioletta Grzenda)
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)
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-Labędowicz and Joanna Trzęsiok)
Part 5: Application with COVID-19 Data 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)
Chapter 18 - Modelling the Risk of Foreign Divestment in the Visegrad Group Countries During the COVID-19 Pandemic (Marcin Salamaga) Chapter 19 - Analysis of COVID-19 Dynamics in EU Countries Using the Dynamic Time Warping Method and ARIMA Models (Joanna Landmesser).
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