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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Integration of chatbots into the system of professional training of Masters</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Tetiana V. Shabelnyk</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Serhii V. Krivenko</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Nataliia Yu. Rotanova</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Oksana F. Diachenko</string-name>
          <email>djoksana@gmail.com</email>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Iryna B. Tymofieieva</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Arnold E. Kiv</string-name>
          <email>kiv@bgu.ac.il</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Ben-Gurion University of the Negev</institution>
          ,
          <addr-line>P.O.B. 653, Beer Sheva, 8410501</addr-line>
          ,
          <country country="IL">Israel</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Mariupol State Univeristy</institution>
          ,
          <addr-line>129a Budivelnykiv Ave., Mariupol, 87500</addr-line>
          ,
          <country country="UA">Ukraine</country>
        </aff>
      </contrib-group>
      <fpage>212</fpage>
      <lpage>220</lpage>
      <abstract>
        <p>The article presents and describes innovative technologies of training in the professional training of Masters. For high-quality training of students of technical specialties, it becomes necessary to rethink the purpose, results of studying and means of teaching professional disciplines in modern educational conditions. The experience of implementing the chatbot tool in teaching the discipline “Mathematical modeling of socio-economic systems” in the educational and professional program 124 System Analysis is described. The characteristics of the generalized structure of the chatbot information system for investment analysis are presented and given: input information, information processing system, output information, which creates a closed cycle (system) of direct and feedback interaction. The information processing system is represented by accounting and analytical data management blocks. The investment analysis chatbot will help masters of the specialty system analysis to manage the investment process eficiently based on making the right decisions, understanding investment analysis in the extensive structure of financial management and optimizing risks in these systems using a working mobile application. Also, the chatbot will allow you to systematically assess the disadvantages and advantages of investment projects or the direction of activity of a system analyst, while increasing interest in performing practical tasks. A set of software for developing a chatbot integrated into training is installed: Kotlin programming, a library for network interaction Retrofit, receiving and transmitting data, linking processes using the HTTP API. Based on the results of the study, it is noted that the impact of integrating a chatbot into the training of Masters ensures the development of their professional activities, which gives them the opportunity to be competent specialists and contributes to the organization of high-quality training.</p>
      </abstract>
      <kwd-group>
        <kwd>eol&gt;Master's students</kwd>
        <kwd>system analysis</kwd>
        <kwd>innovative training</kwd>
        <kwd>chatbots</kwd>
        <kwd>programming language</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>At the current stage of education development, the issue of introducing innovative teaching
methods is the one of the greatest significance.</p>
      <p>
        The Law of Ukraine On Higher Education stipulates “ensuring an organic combination of
educational, scientific and innovative activities in the educational process” as one of the primary
tasks of higher educational institutions [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ].
      </p>
      <p>
        Government documents on education declare significant changes concerning improvement of
higher education: focusing on the world’s best standards of education, new intensive educational
technologies, diferentiation and integration of the content of education, implementation of
modern educational technologies. In the formation of innovative society, the functional features
of education are not only providing students with the knowledge and skills already accumulated
during the previous years, but also the development of their ability to perceive and use new
scientific ideas, tools and methods in practice [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ].
      </p>
      <p>
        Thus, the current state of society requires the use of innovative methods and technologies of
training students in higher educational institutions which will enable future professionals to
be more competitive in the labor market [
        <xref ref-type="bibr" rid="ref3 ref4 ref5 ref6">3, 4, 5, 6</xref>
        ]. In particular, Master’s students of System
Analysis (Educational Program (EP) of System Analysis) should be able to perform innovative
tasks of the appropriate level of professional activities which focus on researching and solving
complex problems of designing and developing information systems to meet the requirements
of science, business and enterprises in diferent spheres [7].
      </p>
    </sec>
    <sec id="sec-2">
      <title>2. Results</title>
      <p>Innovative training is characterized by a constant desire to reappraise values, to preserve the
ones that are of undeniable importance and to reject those that are already outdated. Innovations
in education are associated with an active process of creating and spreading new methods and
tools for solving didactic tasks of training specialists in a harmonious combination of classical
traditional methods and the results of creative search, application of non-standard, advanced
technologies, original didactic ideas and forms of educational process [8].</p>
      <p>The process of innovations in technology and methods of modern training has become the
object of study of numerous scientists. Scientific studies deal with general theoretical, scientific
and practical problems of the innovation paradigm in higher education, some progressive forms
and technologies of teaching, experience and prospects of their use in practice [9, 10, 8, 11, 12].</p>
      <p>Particularly, the authors relate innovations in education to the necessity of improving the
traditional pedagogical process (modernization, modification, rationalization) and of transforming
the existing traditional educational process i.e. radical transformations and complex changes
[13]. The researchers of pedagogical innovation correlate understanding of the new in education
with such features as being useful, progressive, positive, modern and advanced [14].</p>
      <p>Communication technologies based on messengers and chatbots are becoming a global trend
in education [15]. The Internet, which was originally a medium for transmitting information, is
now increasingly assuming the functions of a communicator. The global network is becoming
a special communication environment, which occupies an important place in all spheres of
society. This is especially true of the modern generation with mobile devices being dominating
[16]. The studies have shown that phones are used for messaging more often than for other
purposes [17].</p>
      <p>Therefore, companies aspire to gain the attention of online users and create chatbots in order
that they should integrate into messengers. According to Flurry Analytics’ study, the demand
for messaging applications on social networks and mobile networks is continuing to grow in
contrast to other spheres. Thus, in 2016, which is associated with the peak of chatbot popularity,
the demand for messaging applications increased by 44% compared to 11% of the average annual
growth of all the applications, and the time spent by users in messengers increased by 394%
compared to 69% of average growth [18].</p>
      <p>Scientists address to approaches to the creation and application of chatbots in diferent fields
of work [19, 20, 21, 22].</p>
      <p>Ushakova [16] mentioned that messengers are currently used all over the world for solving
various tasks that go beyond simple text messaging, as well as for customer’s interaction with
companies, searching for necessary products, content consumption and others. At the same
time, this area is developing dynamically and requires a more detailed analysis and justification
of the approaches, frameworks, platforms and analytical tools used to create chatbots.</p>
      <p>
        Thus, due to the rapid development of computer technologies, artificial intelligence (AI)
has entered lives of ordinary Ukrainians, making it simpler and more comfortable. Chatbots
built on the basis of neural networks [
        <xref ref-type="bibr" rid="ref10 ref7 ref8 ref9">23, 24, 25, 26</xref>
        ] and machine learning [
        <xref ref-type="bibr" rid="ref11 ref12 ref13 ref14 ref15">27, 28, 29, 30, 31</xref>
        ]
technologies can communicate using auditory or textual methods. These computer programs
are gradually displacing the usual communication marketing, and can significantly help in
education.
      </p>
      <p>
        The digital format of mastering educational programs is expanding at all levels of education.
Though online courses have made learning available to millions of people all over the world,
researches show that only 7% of students enrolled in a course actually complete it. Despite the
global digitalization [
        <xref ref-type="bibr" rid="ref16 ref17">32, 33</xref>
        ], users in web classes feel uncomfortable due to the lack of support
and feedback. Chatbots help to fill in this gap by acting as teaching assistants [
        <xref ref-type="bibr" rid="ref18">34</xref>
        ].
      </p>
      <p>
        With a large number of existing online services in the eLearning segment, chatbots are a
promising tool, as they can support each listener individually, according to their level and pace
of learning, making learning available to almost anyone who has Wi-Fi access. Chatbots do
not require significant resource costs and can potentially help millions of students all over the
world [
        <xref ref-type="bibr" rid="ref18">34</xref>
        ].
      </p>
      <p>In view of the above, it should be emphasized that the use of chatbots is one of the innovative
methods of training and its implementation in the system of professional training of Master’s
students, specialty 124 System Analysis, is a critical task. The purpose of the article is integrating
of chatbots into the system of professional training of Master’s students, specialty 124 System
Analysis.</p>
      <p>Let us consider the implementation of a chatbot into the system of professional training of
Master’s students, specialty 124 System Analysis while teaching the discipline of Mathematical
Modeling of Socio-Economic Systems at Mariupol State University, Ukraine.</p>
      <p>Mathematical Modeling of Socio-Economic Systems is taught on the basis of the
EducationalProfessional Program 124 System Analysis (hereinafter EPP) of Mariupol State University for
Master’s students and is part of the compulsory components of EPP as a discipline of the training
course [7].</p>
      <p>The discipline is taught in the 1st term and contains 7 ECTS credits (210 hours), 24 lectures,
46 practical classes, and student’s independent work – 140. The form of the final control is an
exam.</p>
      <p>The purpose of the discipline is to form a system of knowledge and practical skills in the field
of structural organization and functioning of socio-economic systems, elaboration and
implementation of economic and mathematical models for their analysis, synthesis and optimization.</p>
      <p>Teaching of the discipline is carried out through lectures and practical classes, individual and
group consultations, independent work of students performing practical tasks on each topic on
individual options, presentation of practical work, and testing.</p>
      <p>The Department of Mathematical Methods and System Analysis at Mariupol State University
has developed and implemented into the educational process a working mobile application
with an integrated information retrieval system that helps an investment specialist to make
decisions. This application is used in studying the topic Models and Methods of Financial
Systems Management in the discipline Mathematical Modeling of Socio-Economic Systems.
The information coming from the chatbot is used by students for building optimization models
of investment processes in financial systems and for risk optimization in financial systems.</p>
      <p>The main professional program training outcomes achieved through the use of this tool are
the ability to use various methods, for example, the method of modern information technologies,
for efective communication at professional and social levels; an ability to adapt to new situations
and to make appropriate decisions; to gain knowledge and skills of working with sources of
information for data and knowledge integration in the field of work of the organization through
methods of knowledge acquisition, knowledge representation, knowledge classification and
compilation [7].</p>
      <p>The structure of the information system of the chatbot consists of the following components
(figure 1): input information, information processing system, output information.</p>
      <p>Information support in this system enables an investment analysis specialist to determine
the expedience of investments and further cooperation with various partners.</p>
      <p>Information collection involves the implementation of the following subprocesses: creation of
information channels; selection of information objects, determination of its sources; organization
of work with information sources, information consumption; ensuring continuous functioning
of information sources.</p>
      <p>
        Information processing, in its turn, is provided through accumulation, evaluation and analysis
of the information, its classification, comparison and verification, extraction of biased and
contradictory information, formation of hypotheses, interpretation of information, creation of
information databases, distribution of information, elaboration of information documents [
        <xref ref-type="bibr" rid="ref19">35</xref>
        ].
      </p>
      <p>The sources of external information of the working mobile application of investment analysis
with an integrated information retrieval system are:
• electronic data with news of economic, industrial, financial and marketing activities of
diferent levels;
• information on quotations of economic, industrial and financial tools transmitted via the</p>
      <p>Internet.</p>
      <p>At the input of this system, the information flows are channeled into appropriate functional
blocks, in which they are processed to identify key parameters and indicators. At the next stage
of data processing, information and accounting information materials are divided and analyzed
by the analytical module of the system. After that, the filtered information with answers to the
questions is presented in a user-friendly form.</p>
      <p>When searching for tools for creating a chatbot, it was determined that to build a bot you
should have knowledge and skills of a particular programming language, such as Python,
Ruby, Node.JS, PHP, Kotlin. It was necessary to determine which language should be used for
programming the mobile application. It is also important to be able to work with the REST
(Representational State Transfer) API (Application Programming Interface), which is provided
by messengers and other services.</p>
      <p>The analysis of the studies on the demand for specialists in a particular programming
language, which are publicly available, shows that the Kotlin programming language is becoming
increasingly popular.</p>
      <p>Thus, in May 2017, at the Google I/O conference Kotlin was announced to be included in the
list of the oficial languages that are supported for the development of Android applications.</p>
      <p>
        At the current stage of development of programming tools, the Kotlin language has gained
popularity in Brazil, India, Germany, the United States and Japan. It should be added that among
Android developers the Kotlin programming language is considered to be an alternative to
Objective-C and also acts as an analogue of the Swift tool which is used to develop applications
on Apple’s iOS [
        <xref ref-type="bibr" rid="ref20">36</xref>
        ].
      </p>
      <p>The Kotlin language was designed and developed by the Czech company JetBrains, which
is known for its popular IDE – IntelliJ IDEA. Google’s Android team has announced oficial
support for the Kotlin programming language.</p>
      <p>Among the significant advantages of the Kotlin language is its ability to compile in JavaScript
or Native to run on the iOS platform; an easy transition from Java to Kotlin (it is suficient
to install the Kotlin plugin and their compatibility); availability of extension functions for the
development of pure ARI; the presence of “null” in the system of types; conciseness, which,
consequently, reduces the number of errors. However, there are also some drawbacks, among
which there is a slower compilation speed of the program, for example, Android Studio runs a
bit slower with Kotlin.</p>
      <p>A necessary tool for creation a chatbot is a library for network interaction, one of which is
Retrofit (REST client for Java and Android). The tool makes it easy to obtain and download
JSON (or other structured data) through a REST-based web service. In Retrofit it is possible
to configure the converter used to bring the data in series. GSon is typically used for JSON,
but it is possible to add your own converters to process XML or other protocols. It should be
mentioned that Retrofit uses the OkHttp library for HTTP requests.</p>
      <p>
        The Retrofit library simplifies interaction with the REST API site by performing part of
the routine work; it is convenient when performing a request to various web services with
the commands GET, POST, PUT, DELETE; it works in asynchronous mode, which, in its turn,
eliminates unnecessary code [
        <xref ref-type="bibr" rid="ref21">37</xref>
        ].
      </p>
      <p>The following three classes are required to work with Retrofit:
1. Model class used as a JSON model
2. Interfaces that determine possible HTTP operations
3. Retrofit.Builder class is an instance that uses the interface and API Builder to specify the</p>
      <p>URL endpoint for HTTP operations.</p>
      <p>Each interface method is one of the possible API calls, which must have an HTTP annotation
(GET, POST, etc.) to determine the request type and relative URL. The return value completes
the response in the Call object with the type of the result expected.</p>
      <p>Figure 2 shows examples of using a working mobile application with an integrated information
retrieval system (Android Studio is used), which helps to take investment decisions and advice
from the expert system.</p>
    </sec>
    <sec id="sec-3">
      <title>3. Conclusions</title>
      <p>Communication technologies based on the use of various messengers and chatbots are becoming
a modern trend in education. The introduction of such tool technologies in the educational
environment is a practical example of the use of innovative methods and technologies of teaching
students in higher educational institutions.</p>
      <p>The Department of Mathematical Methods and System Analysis at Mariupol State University
has developed and implemented into the educational process a working mobile application
with an integrated information retrieval system that helps an investment specialist to make
decisions. This application is used in studying the topic Models and Methods of Financial
Systems Management within the discipline Mathematical Modeling of Socio-Economic Systems.</p>
      <p>Using the application, students receive input information in constructing optimization models
of investment processes of financial systems and in risk optimization in these systems, which
ensures the acquisition of appropriate professional training results.
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