Kateryna Kononova

V. N. Karazin Kharkiv National University · Department of Economic Cybernetics and Applied Economics

This research product is a collection of different efforts, united by a common goal: to identify some of the most critical security challenges in online environment and what can be done to counter them, and to determine the role of governments and state institutions in countering them. People spend increasing amounts of time online, either communic...

Inspired by recent advancements in generative AI and Jean-Pierre Petit's accessible approach to science communication, I've created a graphic novel titled "Machine Learning for Humans on Cats.” This novel aims to simplify the complex world of machine learning (ML) for a broad audience, making technological concepts engaging and accessible. The boo...

The paper discusses the prototype of a public opinion monitoring system toward Covid-19 measures using machine learning and sentiment analysis, which includes: 1) data collection; 2) data preprocessing and statistical analysis of a created corpus; 3) semantic analysis of the corpus; 4) sentiment analysis of the data. The sample of posts, which was...

Governance systems all over the world are coming under huge stress. Nowadays, two factors become crucial in the fight against the pandemic and its negative consequences: the state's ability to withstand stress in the economy and society; and civil support and approval of the governments' anti-crisis actions. This study aims to recognize the differe...

The paper deals with the cryptoeconomy impact on the environment. The term 'cryptoeconomy' is used for designating the emerging industry around cryptocurrencies and blockchain. Cryptocurrency mining consumes a lot of electricity. As of September 2019, the estimated annual miners' electricity consumption was 78.93 TWh. According to the upper boundar...

У підручнику розглядаються основні принципи аналізу даних та машинного навчання, приділяється увага CRISP-DM методології та питанням підготовки даних. Розглянуто базові моделі лінійної та нелінійної регресії, класифікації (зокрема логістична регресія, методи опорних векторів та k-найближчих сусідів, Байєсова класифікація, дерева рішень і випадковий...

As a result of the study, locations for Pan-Asian food delivery service in Kharkiv have been found so that their network evenly covered the entire city; and different units were at an acceptable distance from each other. The company’s order database allowed us to apply ML algorithms, in particular, clustering methods to find optimal locations. Thre...

Crypto economy, first mentioned in 1996, started shaping at the beginning of 2009, after Bitcoin network launch. Being a new phenomenon, Crypto economy causes both great enthusiasm and serious concerns related to its impact on the environment. The amount of electricity consumed by Crypto economy is comparable to the annual consumption by such count...

Economic growth and the distribution of income has become the subject of a broad international discussion caused by the request for new sources of sustainable development under the conditions of qualitative and quantitative limitations of natural resources. The aim of the paper is to analyze institutional and environmental channels of income inequa...

The study of the traders’ behavioral characteristics was carried out using the methods of experimental economics and machine learning technologies. In order to analyze the impact of level of reasoning on the traders’ profitability, we collected the information on executed orders for 17 trading pairs in the period from December 16, 2017, to January...

Profiles and public Russian-language posts/comments in the three social media networks in the Baltic states served as the analysis sample, with a geographical focal points being the areas in the three states that comprise large Russian-speaking population: the cities of Tallinn, Maardu and Paldiski as well as Ida-Viru county in Estonia; the cities...

The aim of the research is a modeling of online social networks (OSNs) users posting behavior. The research is based on the data retrieved from two most popular Russian-speaking OSNs – Vkontakte and Odnoklassniki. The article explores the distribution of the users, their posts, friends, and groups. To check the common hypothesis that content creato...

Circular Economy has become the subject of a broad international discussion caused by the request for new sources of sustainable development under the conditions of qualitative and quantitative limitations of natural resources. The aim of the paper is to analyze the applied aspects of the Circular Economy on the examples of two expanding Ukrainia...

The amount of daily generated information is growing at a catas-trophic rate while assessing its quality and reliability becomes more and more difficult. This leads to an increase in demand for methods and models of trust evaluation both to sources of information and to information itself. Scientists from various fields – psychology, sociology, eco...

The paper proposes a method of financial time series forecasting taking into account the semantics of news. For the semantic analysis of financial news the sampling of negative and positive words in economic sense was formed based on Loughran McDonald Master Dictionary. The sampling included the words with high frequency of occurrence in the news o...

The significant growth of the cryptocurrency market caused a request for new forecasting methodology. The theoretical framework of the study is behavioral finance theory, in particular, the assumptions that traders’ behavior is irrational, and their decisions significantly depend on psychological factors. The aim of the study is the development of...

The paper proposes a method of financial time series forecasting taking into account the semantics of news. For the semantic analysis of financial news the sampling of negative and positive words in economic sense was formed based on Loughran McDonald Master Dictionary. The sampling included the words with high frequency of occurrence in the news o...

Taxation is one of the most important institutes, influencing human behaviour, and an essential factor of wellbeing and of sustainable development. The paper is devoted to the analyses of tax evasion, which reduces tax revenues and cuts financial resources for sustainable development projects. When comparing different types of tax behaviour we cons...

Investigation of mergers and acquisitions in ICT sector become more and more important with the development of the information economy. Nowadays a vast number of new technologies are created in the information sector. In such circumstances the giant companies are trying to get the best technology as early and as cheap as it possible. On the other h...

The article deals with the following aspects of environmental safety: public interest in the issue; experience of the market schemes implementation (ETS); institutional mechanisms (pricing instruments, emission taxes); case study of Ukraine. The analysis shows that public interest to the global warming decreased in recent years. Although the questi...

In spite of the obvious harmful effects of Information and Communication technologies (ICTs) production and usage, there is also the opposite effect on the environment produced by green ICTs. The aim of our study is to investigate in details the impact of ICTs on indicators of sustainable environment. To rich the aim we analyzed the structure of e-...

In spite of the obvious harmful effects of Information and Communication Technologies (ICTs) production and usage, there is also the opposite effect on the environment produced by green ICTs. The aim of our study is to investigate in detail the impact of ICTs on indicators of a sustainable environment. To rich the aim we analyzed the structure of e...

Evolutionary concept become more and more popular among economists, but unlike the post-synthetic theory of evolution, which list of the main provisions is relatively stable; a final corps of evolutionary economic theory assumptions has not been formed yet. The paper presents economic interpretation of post-synthetic theory of evolution, which inc...

Cambridge debate raised a problem of aggregation, which allows measuring adequately the cumulative output as a function of total capital and total labor. Unlike most studies on economic growth based on aggregated macro functions and to harmonize macroeconomic characteristics of the system with the results of economic agents’ interactions at the mic...

A set of economic time series forecasting models (based on objective and subjective internet content analysis) is proposed in the article. The Bitcoin (BTC) system, the first and most popular cryptocurrency today, was chosen for analysis. Exponential increase of the cryptocurrency market stipulates relevance of BTC rate forecasting in recent years....

With the development of information technologies, Internet creates new virtual environment. Self-organization of Internet users and venture businesses, built on this effect (e.g. social networks) are the brightest phenomenon of the Information Economy. The most important monetization factor of social network is the total number of its participants....

The paper deals with the models complex of macrogenerations (MG) evolution, which is based on Majevski’s concept. The complex includes: 1) study of the parameters drift of macroeconomic production function, 2) model of MG lifecycle, 3) model of identification and parameter estimation of MGs, 4) MGs comparative analysis of European countries. With a...

To pursue the Sustainability Empowerment, i.e. to permanently insert the Right to Well-being Sustainability in the GLOBAL SOCIETY, we need to change the current development model, too much oriented, today, to a trade vision. To reach such an objective, the consumer, should adopt, within its anthropocentric approach, lifestyles compatible with it. T...

У монографії на підставі постулатів еволюційної економічної теорії досліджуються феномени інформаційної економіки на макро- та мікрорівнях. Обґрунтовано методику ідентифікації стадій розвитку інформаційної економіки, запропоновано модель зміни макрогенерацій. На підставі авторської концепції еволюції популяції економічних агентів розроблено мультиа...

The aim of the research is neural network modeling of human behavior types on the basis of laboratory experiments «Public good» (PG game) outcomes, and interpretation of the results in terms of ‘reciprocity’ and ‘free-rider’ behavioral hypotheses. The article contains: 1) the assumptions of the human behavior model in economic theory and their expe...

A scientific paradigm of irreversible changes in the natural sciences has opened new prospects in economic researches. The modern school of evolutionism offers a wide variety of economic development models. However the evolutionary approach, rather successfully applied on the theory of company and innovation, has not received adequate development i...

There are more than twenty widely used e-indexes which are used to measure ICT Adoption all over the world. It might be a problem to choose ones to analyze the ICT dynamics or to compare the levels of ICT development in different regions of the world. So first the most common e-indexes were reviewed. Then the comparative analysis of the e-indexes s...

For many countries the current stage of economic development is the transition stage between the industrial and information economies. Its features are: 1) the growth of scientific knowledge and its importance for the society's welfare, 2) structural changes (from the mining and manufacturing sectors to services and information), 3) informatization...

The overview of the most common e-indexes (Information Society Index; E-Readiness Index; Knowledge Economy Index; E-Government Development Index; ICT Development Index; Digital Access Index; Technology Achievement Index; Networked Readiness Index; Digital Opportunity Index; ICT Opportunity Index; ICT Diffusion Index; Global Competitiveness Index; G...

На основе постулатов эволюционной экономики сформулированы предположения модели взаимодействия экономических агентов. В программной среде NetLogo разработана мультиагентная модель экономической эволюции. Проведен анализ чувствительности траекторий совокупного выпуска агентов-новаторов. Сделаны выводы относительно порождаемых моделью режимов экономи...

Nonlinear dynamic model has been suggested for assessing and predicting the number of social network users. It was shown that Maurer and Huberman’s model describes the dynamics of users quite well in the short term. But the appearance of new services and changes in network strategy shift the system parameters, which significantly affects to users’...

A scientific paradigm of irreversible changes in the natural sciences has opened new prospects in economic researches and generated a large variety of new schools and areas (one of which is the modern school of evolutionism). A key factor of the evolutionary concept is the human factor; the models built on this concept deal with unique agents (with...

Information-Communication Technologies (ICT) are the general technology impacting the economy universally. The analysis of these processes was done within the framework of the Information Society concept. Standard statistical indicators had been insufficient to evaluate its development, so it was proposed to calculate the composite ICT Development...

A scientific paradigm of irreversible changes in the natural sciences has opened new prospects in economic researches. Evolutionary theory sees economic development as an irreversible process of complexity, diversity and productivity increase of production due to recurrent changes of technologies and institutions. The modern school of evolutionism...

The objective of the study is modeling of the macroeconomic growth as the evolutionary process. To solve this problem the hypotheses of the macrogenerations model have been formulated based on the evolutionary theory and the theory of multi-agent systems. The paper deals with the multi-agent model of macrogenerations evolution which is developed in...

A scientific paradigm of irreversible changes in the natural sciences has opened new prospects in economic researches. The modern school of evolutionism offers a wide variety of economic development models. However the evolutionary approach, rather successfully applied on the theory of company and innovation, has not received adequate development i...

The objective of the study is modeling of the macroeconomic growth as the evolutionary process. To solve this problem the hypotheses of the macrogenerations model have been formulated based on the evolutionary theory and the theory of multi-agent systems. The paper deals with the multi-agent model of macrogenerations evolution which is developed in...

Nonlinear dynamic model has been suggested for assessing and predicting the number of social network users. It was shown that Maurer and Huberman's model describes the dynamics of users quite well in the short term. But the appearance of new services and changes in network strategy shift the parameters of system, which significantly affects to user...

Defi nitional aspects of the terms «e-government» and «e-governance» in the framework of the new model of public administration are considered. The international revision of practical steps in e-government institutionalization, including Ukraine is made. Results of statistical analysis of indicators of the e-government development in the world (ana...

New technologies and scholarship have expanded access to the information worldwide. That has created new markets, new kinds of business, new logistics networks and new methods of business dealing. The base of such systems is information-communication technologies (ICT) and the intellectual capital, instead of raw materials and processing industry....

В статье рассматриваются сетевые организации в интернет как феномен глобальной экономики, анализируются источники их дохода. Особое внимание уделено исследованию ценообразующих факторов и модели жизненного цикла социальных сетей.