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  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>X (Tetiana Dluhopolska);</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>The Influence of Migration Processes Caused by the Russian- Ukrainian War on the Development of E-Commerce in Ukraine</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Tetiana Zatonatska</string-name>
          <email>tzatonatska@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Yana Fareniuk</string-name>
          <email>yfareniuk@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Dmytro Zatonatskiy</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Tetiana Dluhopolska</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Alona</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Academy of Financial Management, Ministry of Finance of Ukraine</institution>
          ,
          <addr-line>46/48 Honchara str., Kyiv, 01034</addr-line>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Taras Shevchenko National University of Kyiv</institution>
          ,
          <addr-line>64/13 Volodymyrska str., Kyiv, 01601</addr-line>
          ,
          <country country="UA">Ukraine</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>West Ukrainian National University</institution>
          ,
          <addr-line>11 Lvivska str., Ternopil, 46000</addr-line>
          ,
          <country country="UA">Ukraine</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>1925</year>
      </pub-date>
      <volume>000</volume>
      <fpage>0</fpage>
      <lpage>0001</lpage>
      <abstract>
        <p>Migration processes caused by the Russian-Ukrainian war caused crises in almost all branches of the national economy. However, e-commerce continues to gain momentum and create conditions for Ukrainian businesses, accelerating its integration into the European digital space. Considering the significant share of migrants from Ukraine in EU countries, the issue of bringing all online trading platforms to EU standards, which regulate activities in the field of e-commerce, is being brought up to date. The paper's purpose is to forecast the e-commerce market in Ukraine and the EU in the context of migration processes. The research methodology is based on an interdisciplinary approach, combining general scientific and unique economic and mathematical methods. As a result of the study, a system of models was proposed, which considers various scenarios of migration processes and their impact on the development of ecommerce in Ukraine. Migration processes have a positive effect on the development of the activities of all e-commerce market participants in Ukraine and contribute to rapid adaptation to EU conditions and standards in the field of e-commerce. e-commerce, migration processes, online shopping platforms, European digital space The full-scale Russian-Ukrainian war, which Russia started on February 24, 2022, caused the largest ORCID: 0000-0001-9197-0560 (Tetiana Zatonatska); 0000-0001-6837-5042 (Yana Fareniuk); 0000-0002-4828-9144 (Dmytro Zatonatskiy);</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>migration wave of the 21st century. As a result of the Russian invasion, more than 5 million refugees,
mostly women, children, and the elderly, crossed the borders of Romania, Poland, Slovakia, and
Hungary in the first months of the war (Fig. 1). Since the COVID-19 pandemic was not yet under
control at the time of the migration wave, and the vaccination rate in Ukraine was one of the lowest in
Europe [1; 2], this situation represented a significant epidemiological risk that EU host countries
assumed. The war and the migration processes accompanying it have a significant impact on electronic
commerce because electronic commerce is the interaction of business entities regarding the purchase
and sale of goods and services (material and informational) using information networks (Internet,
cellular network, internal local network of companies ). During the COVID-19 pandemic, the demand
for e-commerce increased tenfold, making it relatively easy for the global community to adapt to the
real-time but the impact of war has consequences that are worth exploring.</p>
      <p>The Smart Shopper study showed that in 2021 the share of online shopping increased across all age
categories of shoppers. The most significant rowth was among Ukrainians aged 18-24 and 45-54 years
old – 43% of buyers of this age prefer online shopping. At the time of the study, one of the main reasons
for the active growth of Ukrainian e-commerce was the COVID-19 pandemic, when many offline stores</p>
      <p>2022 Copyright for this paper by its authors.
did not work. Now a full-scale war with Russia plays a significant role. During the war, many shops
and shopping centers closed, and buyers had no choice. Also, for security reasons, some shoppers may
be afraid to visit crowded places and prefer to shop online. Online stores also faced difficulties due to
the war, but, as the experience of our client shows, many merchants coped and restored their work [4].</p>
      <p>At the beginning of March 2022, electronic commerce almost “went to the bottom”. On the day of
the Russian invasion, all online stores lost an average of 82.7% of sessions. In the first week, Ukrainian
online retailers lost almost all their income. On average, it collapsed by 92%. But in the middle of
March, revenues began to grow along with a significant increase in the number of sessions. By the end
of May, some categories even returned to pre-war indicators (pet products and cosmetics along with
household and hygiene products) [5]. After an almost complete halt in online trading in the first weeks
of the war, retailers gradually fine-tuned logistics, moved warehouses, and adjusted to changes in
demand. However, despite individual surges in consumer demand and an increase in the average check,
the full recovery of the sector began only in the summer. Some Ukrainians who moved to a safer place
are faced with the absence of their usual brands in offline stores and choose from what they have. At
the same time, many acts contrary to the strict hierarchy of needs and switch to Ukrainian brands to
support society. This gives a new stage in the development of e-commerce. Electronic commerce is
widely studied in scientific and specialized literature, connected with the rapid development of
electronic commerce in the last decade. At the same time, in the conditions of war in the context of
migration processes, the issue has become especially relevant since many entrepreneurs are forced to
work in the conditions of an unstable market, which is connected with military actions, and turn to
digital marketing. Given the fact that migration has ambiguous effects on macro and micro indicators
of business activity, financial, social and cultural development, it is interesting to study the impact of
the migration crisis caused by the 2022 war on the development of the e-commerce market in Ukraine.
Because in Europe about a quarter (25.5%) of e-commerce happens across borders [6], and this has
been rising steadily every year, it’s interesting to analyze this phenomenon in Ukraine.</p>
    </sec>
    <sec id="sec-2">
      <title>2. Literature review</title>
      <p>The article [7] presents an overview of research findings on the determinants and consequences of
personal networks in the migration aspect. The paper [8] provides a review of the literature on the
development impact of migration and remittances on origin countries and on destination countries. The
researchers [9] proposed a systematic review of the state of the literature on international migration
scenarios and forecasts and evaluated their development in a comparative manner. The authors of the
study proposed a typology of migration scenarios (Fig. 2), however, without considering the 2022 war,
which caused an unprecedented surge in migration and completely changed all development scenarios
after 24.02.2022.</p>
      <p>In article [10], the authors, based on the Push-Pull-Mooring (PPM) theory, investigate the impact of
the Internet on the prosperity of e-commerce in rural areas of China. Villagers establishing their own
companies and returning to places of residence outside large cities contribute to the economic
development of rural areas. Therefore, centralized political support of entrepreneurs through various
mechanisms should play a significant role in this. The research paper [11] gives an overview of how
migration policies in Asian countries (Afghanistan, Bangladesh, Cambodia, India, Indonesia, Japan,
Malaysia, Pakistan, Singapore et.) impact on the business/economic climate.</p>
      <p>The article [12] analyzes the drop in e-commerce volumes in the aggressor country after it launched
a full-scale war against Ukraine. Authors in [13] showed that labor immigration to Poland from Ukraine
for many years, the crisis on the Polish-Belarusian border and the influx of refugees from Ukraine due
to Russia’s military aggression in February 2022 changed the status of Poland from a typical emigration
country to typical immigration country very quickly. In article [14] an attempt was made to forecast the
level of healthcare expenditures in Ukraine for 2023-2024, considering the scale of migration and the
fall in GDP level. The authors proposed 3 scenarios for the development of the economy of Ukraine in
2023-2024, considering changes in the age structure of the population, migration and the volume of
healthcare expenditures using the six-step cohort method.</p>
      <p>In the study [15] the authors determined the state and prospects for business development and its
marketing component during the war in Ukraine. Analysis of the study shows that the share of business
representatives who entirely or partially ceased their activities during the first three months of the war
decreased from 75.3% in March to 49.0% in May (compared to February 24, 2022), which indicates
gradual resumption of business in Ukraine. A study of marketing activities in Ukraine shows that the
most positive changes regarding gradual renewal are observed in digital marketing. In addition, the
study proposes general approaches to adapting marketing and e-commerce during the war to preserve,
restore and further develop business in Ukraine. The results of scientific research [16] note that despite
the brutal war, mass emigration of clients to other countries, and rising unemployment, a business can
adopt, survive, and develop through e-commerce. During the study, the authors proved that, as a result
of hostilities, the behavior of customers is unpredictable. In the paper [17] it is proposed to consider
digitalization and e-commerce as one of the country’s economic security components. Digitalization
affects the economic security of the country by 22%. The results of the calculations confirmed the
hypothesis that digitalization made it possible to maintain the reliable functioning of the banking system
in the conditions of active hostilities on the territory of Ukraine and maintain a minimum standard of
living for the population. As a result of the study, the author proved that e-commerce and e-government
have a long-term impact on financial markets and financial institutions.</p>
      <p>Experts from E-commerce Europe and EuroCommerce [18] noted that 2022 will be an exceptional
year. As consumers have learned to shop online for cheap prices, some additional demand might go to
e-commerce, but certainly, prices will be comparably higher across the board and therefore e-commerce
will not capture and convert all demands. The war in Ukraine has undoubtedly had an impact on
European e-commerce, particularly in the countries nearest to the conflict. The war in Ukraine has
undoubtedly had an impact on European e-commerce, particularly in the countries nearest to the
conflict. The need to study and study the consequences of war is actualized. In research [19] the
possibilities of forming a balanced, effective, and mutually beneficial migration policy in the
Mediterranean region are explored. As stated in studies [20; 21; 22; 23; 24], despite the “nostalgia trade”
effect, when trade focuses in goods distinctive to the migrants’ home country and trade in tourism
services, the effects of trade caused by migration are not yet sufficiently understood, especially through
e-commerce. The current research aims to find a missing link between e-commerce development, and
labor migration, and to analyze the impact of migration processes on e-commerce progress.</p>
    </sec>
    <sec id="sec-3">
      <title>3. Methodology</title>
      <p>The current development of e-commerce in Ukraine is very dynamic since the war started. After a
near-total shutdown of online sales in the first weeks of the war, retailers gradually adjusted logistics,
relocated warehouses and adjusted to changes in demand. However, a lot of Ukrainians went abroad or
change their location internally in Ukraine, which have a negative influence on market growth. In such
conditions, despite individual spikes in consumer demand and an increase in the average check, a full
recovery of the sector began only in the summer, so there is a decline in the e-commerce market. We
can talk about trade in pre-war volumes only in terms of individual positions. The practical task of the
present research is to model the influence of migration on the e-commerce market and forecast the
potential future dynamic using the economic-mathematical model, constructed using R-Studio
Software, and artificial neural network, constructed in Deductor Studio. The data about the e-commerce
market was collected by an EVO Group [25] and Statista [26] for a period from 2010 to 2021 (Fig. 3)
and as influenced factors were selected the following variables: net migration (from the State Statistics
Service of Ukraine [27] for a period from 2010 to 2021 (Fig 4) and from the United Nations [28] for
2022), level of internet penetration and mobile penetration (from World Bank Open Data [29]).</p>
      <p>So, in the first stage, we construct econometric (regression) model with the following general view:</p>
      <p>
        E-commerce = Constant + b1*Exchange rate + b2*Net migration + b3*Mobile + b4*Internet. (
        <xref ref-type="bibr" rid="ref1">1</xref>
        )
The exchange rate was selected as a factor, which has a significant influence on e-commerce and
retail in general as shows the dynamic of the economic situation in the country and the dynamic of
consumers’ income. Mobile and Internet penetration are one of the more significant factors, which
demonstrate the trend of growing penetration of digitalization, which is one of the key drivers of
ecommerce development. Migration growth leads to a large drop in the potential consumer base of the
e-commerce market, so, as a result, the volume of e-commerce will significantly change. Considering
the potential changes in the Ukrainian migration level, there are 3 different scenarios, which are
presented in Table 1. The blackouts and Russian attacks increase the possibility of a pessimistic
scenario.
      </p>
    </sec>
    <sec id="sec-4">
      <title>4. Modelling the influence of migration on e-commerce and informationtechnical support of e-commerce development</title>
      <p>The technical characteristics of the constructed linear regression model are presented in Table 2.
Such a model is characterized by high quality (R-square is 83%, the model is adequate, and all factors
are significant with 95% of probability. Considering the significant growth of immigration from
5.0
4.0
3.0
2.0
1.0
0.0
80
60
40
20
0</p>
      <p>D
S
U
n
l
b
Ukraine in a case of a full-scale Russian invasion (more than 5 million Ukrainians go abroad), based on
the constructed econometric model we estimate the forecast for 2022, which implies a drop in the
ecommerce market volume to 3,2 bln USD (by 26% 2021).</p>
      <p>In the next stage, we constructed a neural network model with two hidden layers, considering
ecommerce as an output variable and other factors as an input. The activation function was chosen to be
sigmoidal with a slope of 1.0. In the process of neural network learning, 1.2 was selected as the
ascending step and 0.5 was selected as the descending step. The neural network had the better
performance in the period since 2015 after a political and economic crisis (the average error is less than
2%). After analysis of the forecast by the constructed neural network, we can make conclusions about
its more optimistic view in comparison with the econometric model, as the prediction is that in 2022
the general level of the e-commerce market in Ukraine will accumulate 3,59 bln USD (-18% 2021).</p>
      <p>It is relevant to consider such deviation as a range for the future dynamic of the e-commerce market
for 2022. For 2023-2024, there are two different scenarios – slow recovering in case of continuing war
and slowly coming back home (growth rate at average 10-15%) and optimistic option in case of victory
of Ukraine (+15-20%), as more than 70% of Ukrainians plan to come back in Ukraine, when it will be
safe [30]. Considering the influence of Ukrainian migration on EU e-commerce, we propose to
concentrate attention on the Poland market as Poland is characterized by the largest share of Ukrainian
migrants [28]. So, based on the forecasts of Statista [20], the total amount of Poland’s e-commerce
market will grow up to 17,14 bln USD (+13% vs 2021). In addition, it is appropriate to consider a
system of relevant software that can be used to support the business processes of companies in the
ecommerce market under the influence of migration processes. The modern world proposes a lot of
programming tools and software for effective e-commerce development.
 There is a desktop and mobile version
 Interface that everyone understands
 There is a free version  Not enough tools to clean
 Combining data from multiple sources and process data
Power BI  Built-in visualization libraries  Importing and processing
 You can customize the display for any gadgets large amounts of data takes a
 Built-in query processing subsystem, data visualization long time
and modelling system
 Integration with Microsoft products
 Working with different data sources and mixing them  Low level of data protection
 Flexibility, speed, simplicity and ease of learning and use  Data must be pre-prepared
 High interactivity, a wide range of visualizations  Data export takes a long
Tableau  AMvoabilialebipliltaytfooframn saucptipvoerut ser forum and a library with timFeree version provided that
learning resources all solutions are stored on a
 Easy integration with Big Data platforms shared server with open access,
 Multiple users can work on a report at once but there is a paid version
 A single analytics algorithm
 Possibility of fast, interactive visualization
 Ability to share
 Processing in RAM, not in the DBMS
 Data in the form of an associative model (automatic
formation of links)
 Integration of different data sources
 Quick analysis of large datasets
 Supports enterprise security policy
 Convenient to create any filters
 Flexibility, processing speed
 Filtering can combine data
even if you don't want to
 Difficulties may arise without
a technical base
 Difficult to use as a tool for
the entire company
 Difficult to send reports
 High price</p>
      <p>There are numerous techniques for modeling and forecasting consumer demand, price optimization,
customer behavior analysis, etc. [31]. Obviously, before choosing technical tools it is needed to define
the practical tasks and think about the relevant model. For example, for the task of monitoring the key
business indicators, it is relevant to use different software for the development of dashboards and for
visual analytics. Microsoft Power BI and Tableau are the most popular and the most useful tools for
these goals. For solving the tasks of customer segmentation considering current and possible changes
in their behavior due to war and migration (internal or external), it is recommended to implement
clustering methods using such software as Deductor Studio, Weka, Loginom, IBM SPSS Modeler, or
such programming languages as Python or R for a most professional and deeper level of data analysis
and modeling.
 It’s an open solution
 Run most of the data mining models and techniques
 Simple deployment of modelling
IBM SPSS  Intuitive, quick, and easy to use
Modeler
 Produces models and rules which are easy to interpret
 Wide range and combination of models and algorithms
 Working with a CRISP-DM framework
 Open source, free, extensible, can be integrated into
other packages
 Relatively easy to use
 Easy to compare the results of the different algorithms
implemented
 A wide range of clustering and classification models
 Build KDD phases or run an individual experiment
 Wide range of available Data Mining methods for
modeling and data analysis
Deductor  Availability of Kohonen SOM</p>
      <p>Studio  Relevant visualization tools for each used method
 Convenient work
 Free academic version
 Non-trivial logic requires coding
 Limited analysis functionality
 No models are not available (for
example Kohonen SOM)
 Complexity of support
 Graphs could be better
 Already present integrations to
other IBM products are poor
 Some advanced statistical
functions cannot be done in the
menu
 It's an expensive tool
 Lack of proper and adequate
documentation
 Systems are updated constantly
 Accepts data in the ARFF format
 Limited functionality in the free
version
 No actual updates of the
software (company switch on
development and support of
Loginom Studio)
 Great for statistical analysis  R has a steep learning curve, so the
 Work inside of environments like RStudio that language studying is more complicated than
include a data editor, debugging support, and a Python
window to hold graphics as well  Deriving proper solutions with R can be
 The best tool for data visualization. It includes considered as ineffective in terms of speed vs
quite a few packages that correspond with this other programming languages if the code is
 R language provides large community support written poorly. To overcome this drawback, it
with 1000 developers and data scientists spread is mandatory to include libraries to achieve
across the world proper output
 It is used broadly
 Coincides with the way programmers think
more than R does, and therefore it translates
over to other languages more easily
 It’s nice to clean data with a full-service
Python language like Python
 Python is evolving with time
 Python moves more quickly than R
 Python has gained wide popularity as the
syntax is crystal clear to understand
 It is slower in comparison with other
programming languages as it is an interpreted
language
 Requires rigorous testing as the errors
show up in runtime
 It still has lower performance on mobile
computing platforms as there are few apps
created with Python as a core language</p>
      <p>All the mentioned software also can be used for solving forecasting tasks and estimating the level
of influence of various factors on e-commerce development. The comparison of different software is
presented in Table 3, Table 4, and Table 5. Information and analytical support help to maintain business
performance and quickly react to all market challenges with the goal of providing better services for
consumers. It is very important to focus scientific attention on comprehensive data-driven solutions and
gradually implement them in business processes on macro and micro levels of economic systems.</p>
    </sec>
    <sec id="sec-5">
      <title>5. Conclusions</title>
      <p>The proposed economic and mathematical model and neural network show the highest efficiency
for the prediction of e-commerce development. The deviations in the e-commerce volume forecast for
2022 between different models are around 8-10%, which indicates different scenarios for the future
development of the e-commerce market in Ukraine and in the main countries of the EU. Considering
the highest level of migration level, there is a strong influence of the immigration process on
ecommerce development, and according to the forecast, there will be decreasing in e-commerce volume
in Ukraine by 18-26% in 2022 vs 2021. Some part of the Ukrainian e-commerce demand was switched
to Poland Market with a significant number of Ukrainians, who go to Poland after the full-scaled start
of the Russian-Ukrainian war, and, as a result, there will be additional growth in the Poland market,
which will accumulate more than 17 bln USD in 2022 with a growth rate of around 13% vs 2021. So,
the proposed models prove the significant influence of migration on the level of the e-commerce market
and on its future dynamic.The presented review of software for informational and analytical support of
e-commerce contains the pros and cons of three groups of tools: platforms for dashboard development
and Visual Mining, where Microsoft Power BI and Tableau are the most popular and the most useful
for business tasks, as generates the opportunity to implement effective visual analytics with real-time
updating. The second group is software for Data Mining tasks (forecasting, clustering, classification,
etc.) and contains the WEKA, as well as Loginom and IBM SPSS Modeler, which make it possible to
realize projects through CRISP-DM methodology and framework. The third group contains
programming languages R and Python, two of the most important languages for Data Science.</p>
      <p>The article presents a comparison of the advantages and disadvantages of these programming
languages, but, in general, both help to realize deep dive into data and find hidden insights from them.
Implementation of analytical support and mathematical modeling to business processes make it possible
to improve performance and quickly react to all market challenges with the goal of providing better
services for consumers. It is quite important to focus attention on data-driven solutions and gradually
implement them in business processes on macro and micro levels of economic systems.</p>
      <p>So, the findings and conclusions of the presented research will be interesting for the national
government and for Ukrainian and International companies in the e-commerce market, who feel the
impact of migration on business development. As the area of future research, we focus on overcoming
the limitations of current research and modeling the influence of migration on other countries of the EU
and comparison of its impact.</p>
    </sec>
    <sec id="sec-6">
      <title>6. References</title>
      <p>
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