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Fuzzy logical conclusions and conclusions in expert systems of medical diagnostics 医学诊断专家系统中的模糊逻辑结论与结论
System research and information technologies Pub Date : 2021-11-18 DOI: 10.20535/srit.2308-8893.2021.3.05
Yu. A. Zack
{"title":"Fuzzy logical conclusions and conclusions in expert systems of medical diagnostics","authors":"Yu. A. Zack","doi":"10.20535/srit.2308-8893.2021.3.05","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.3.05","url":null,"abstract":"The main problems in making a correct diagnosis are: subjectivity and insufficient qualifications of the doctor, difficulties in correctly assessing the patient’s complaints, signs and symptoms of the disease observed in the patient, as well as individual manifestations of the symptoms of the disease. In publications on the use of expert systems for medical diagnostics using fuzzy logic, the main attention was paid to the medical features of the problem. In this work, for the first time, general methodological aspects of building such systems, creating databases, representing by fuzzy sets of real numbers, digital scales, linguistic and Boolean data of symptom values are formulated. The types of membership functions that are advisable to use to represent the symptoms of diseases are proposed. In fuzzy-logical conclusions, not only the values of the characteristic functions of the logical terms of individual symptoms, but also complex arithmetic functions of their values are used.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121538631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Credibilistic fuzzy clustering based on evolutionary method of crazy cats 基于疯猫进化方法的可信模糊聚类
System research and information technologies Pub Date : 2021-11-18 DOI: 10.20535/srit.2308-8893.2021.3.09
Yevgeniy V. Bodyanskiy, A. Shafronenko, I. Pliss
{"title":"Credibilistic fuzzy clustering based on evolutionary method of crazy cats","authors":"Yevgeniy V. Bodyanskiy, A. Shafronenko, I. Pliss","doi":"10.20535/srit.2308-8893.2021.3.09","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.3.09","url":null,"abstract":"The problem of fuzzy clustering of large datasets that are sent for processing in both batch and online modes, based on a credibilistic approach, is considered. To find the global extremum of the credibilistic fuzzy clustering goal function, the modification of the swarm algorithm of crazy cats swarms was introduced, that combined the advantages of evolutionary algorithms and a global random search. It is shown that different search modes are generated by a unified mathematical procedure, some cases of which are known algorithms for both local and global optimizations. The proposed approach is easy to implement and is characterized by the high speed and reliability in problems of multi-extreme fuzzy clustering.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132655101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Improvement of forest fire monitoring system by expanding information and technological possibilities of modern quadcopters 通过扩大现代四轴飞行器的信息和技术可能性来改进森林火灾监测系统
System research and information technologies Pub Date : 2021-09-30 DOI: 10.20535/srit.2308-8893.2021.3.03
O. Husak, V. Husak
{"title":"Improvement of forest fire monitoring system by expanding information and technological possibilities of modern quadcopters","authors":"O. Husak, V. Husak","doi":"10.20535/srit.2308-8893.2021.3.03","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.3.03","url":null,"abstract":"The article proposes a solution to an important problem — the development of an information technology based on expanding the functionality of non-specialized unmanned aerial vehicles (drones) for early detection of forest fires. The proposed information technology is designed to increase the effectiveness of monitoring forest fires. Тhe existing level of information technology does not fully settle the issue of reliable fire protection of forests. Today, there is a contradiction between the high cost of developing high-tech fire-fighting equipment and lack of its efficiency. The elimination of this contradiction will be facilitated by the involvement of additional non-technical and technical resources in the information technology of early detection of forest fire hotspots. The results of the analysis of the use of modern drones prove that the involvement of unmanned aerial vehicles significantly increases the efficiency of many types of monitoring and they can successfully be used to solve the problems of early detection of forest fire hotspots. The results of experiments are presented, which were carried out both for a series of digital images and for video.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127617487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling of a temperature field for extruder body 挤出机本体温度场的建模
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.10
O. Trofymchuk, Kiril Zelensky, I. Nastenko
{"title":"Modeling of a temperature field for extruder body","authors":"O. Trofymchuk, Kiril Zelensky, I. Nastenko","doi":"10.20535/srit.2308-8893.2021.2.10","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.10","url":null,"abstract":"The paper considers the process of induction heating of the extruder body, the temperature of which determines the degree of heating of the polymer mixture in the zone of loading the dry mixture. A mathematical model of this process is formulated taking into account radiant heat transfer in the gap between the inductor and the case. An iterative numerical-analytical method is proposed for solving the corresponding nonlinear boundary value problem of housing heating, at the first iteration of which a linear boundary value problem is solved (without taking into account radiant heat transfer). At the subsequent stages, a nonlinear boundary value problem is solved. The iterative method is based on the application of integral transformations of the linear part of the problem, followed by an iterative scheme for finding a nonlinear problem. This scheme is based on the algorithms for the equivalent simplification of the expressions obtained by solving the problem. The results of mathematical modeling of the corresponding algorithms are presented.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126625429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Methods for researching the sustainability of production processes when implementing a cyber-physical system 在实施网络物理系统时，研究生产过程可持续性的方法
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.05
A. Kudriavtceva
{"title":"Methods for researching the sustainability of production processes when implementing a cyber-physical system","authors":"A. Kudriavtceva","doi":"10.20535/srit.2308-8893.2021.2.05","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.05","url":null,"abstract":"The article presents an analysis of the methods and criteria for assessing sustainability and the development of stabilization systems, proposed in the theory of automatic control, and studies of approaches to ensuring sustainability, proposed and applied in the practice of controlling production processes. It is proposed to develop models when introducing a cyber-physical system of a production enterprise, combining the ideas of stabilization systems developed in the theory of automatic control, and methods of the theory and practice of managing production processes, while controlling the sustainability based on the laws and methods of systems theory and system analysis.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130004753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Set difference operation for regular Petri net languages for the producer/consumer problem with the bounded buffer 针对有界缓冲区的生产者/消费者问题，用常规Petri网语言进行集差运算
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.08
Vitalii Statkevych
{"title":"Set difference operation for regular Petri net languages for the producer/consumer problem with the bounded buffer","authors":"Vitalii Statkevych","doi":"10.20535/srit.2308-8893.2021.2.08","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.08","url":null,"abstract":"We consider a Petri net for the producer/consumer problem (one of the classical synchronization problems) with the bounded buffer of size n and the regular formal languages Ln, generated by the net. The objective of this paper is to obtain a regular expression for the set difference of languages Ln Lm, n > m. For this purpose, we give the finite automaton which accepts the set difference of mentioned languages, and then we use the state elimination method to obtain the regular expression in the recursive form. The main result is illustrated by the examples. In an appendix, we consider the problem with two producers and two consumers with the bounded buffer of size 1. We give a reachability graph and propose the method for obtaining the regular expression. The explicit formulas are given for the problem with two producers and one consumer and also for the problem with one producer and two consumers.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114550133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cluster analysis for multidimensional objects in fuzzy data conditions 模糊数据条件下多维对象的聚类分析
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.02
Yu. A. Zack
{"title":"Cluster analysis for multidimensional objects in fuzzy data conditions","authors":"Yu. A. Zack","doi":"10.20535/srit.2308-8893.2021.2.02","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.02","url":null,"abstract":"This article presents many different areas of practical applications of multivariate cluster analysis under conditions of fuzzy initial data that are described in the literature. New algorithms and formula expressions are proposed for combining various multi-dimensional objects, the parameters of which are given by fuzzy-sets, into clusters along with calculating the coordinates of the centroids of their membership functions. Various types of clustering criteria are formulated in the form of minimizing the weighted average and the sum of distances between the centroids of objects and clusters presented in different metrics, as well as maximizing the distances between the centroids of different clusters. The formulations and mathematical models of three different NP-hard problems of multidimensional clustering in fuzzy-data conditions are proposed; while solving them any of the considered optimality criteria can be used. Heuristic algorithms for the approximate solution of two formulated problems have been developed. The algorithm for solving the 1st problem is illustrated with a numerical example. The obtained results can serve as a direction for further research and have wide practical applications.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electric heater mathematical model for cyber-physical systems 网络物理系统的电加热器数学模型
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.01
N. Pankratova, I. Golinko
{"title":"Electric heater mathematical model for cyber-physical systems","authors":"N. Pankratova, I. Golinko","doi":"10.20535/srit.2308-8893.2021.2.01","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.01","url":null,"abstract":"The article discusses the heat and mass transfer dynamic model for an electric heater with lumped parameters, which allows transient processes simulation for the main influences. The proposed model is recommended to be used in cyber-physical systems for forecasting and evaluating the effectiveness of control systems integrated into a single information management system. The developed model can be used by specialists for the analysis and synthesis of control systems for balanced ventilation systems or industrial air conditioners. As an example, a numerical simulation of transient processes along the action main channels for an electric heater HE 36/2 manufactured by VTS CLIMA was carried out. The significant advantage of the proposed model is the possibility for using it for the synthesis and analysis of multidimensional control systems.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"41 27","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120852542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Topic modeling of researchers based on their interests from Google Scholar 基于谷歌学术研究人员兴趣的主题建模
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.09
S. Shtovba, M. Petrychko
{"title":"Topic modeling of researchers based on their interests from Google Scholar","authors":"S. Shtovba, M. Petrychko","doi":"10.20535/srit.2308-8893.2021.2.09","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.09","url":null,"abstract":"The article proposes an algorithm for topic modeling of researchers based on their interests from Google Scholar profiles. The algorithm uses the set of fields of research from research classification system ANZSRC. An information resource for topic modeling is a corpus of categorized publications from Dimensions. Interests from researchers’ profiles are used as search queries to Dimensions that outputs distributions of documents over categories. To reduce information noise these distributions are taken through a few stages of processing. The article also compares the results of topic modeling based on interests from Google Scholar profiles and based on a categorized list of publications from Dimensions. The comparison is done using modified Czekanowski metric that takes into account the similarity between categories. The results of comparing the topic modeling outputs based on different information sources show a good match.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133445555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of computational intelligence methods in forecasting problems at stock exchanges 计算智能方法在证券交易预测问题中的研究
System research and information technologies Pub Date : 2021-09-14 DOI: 10.20535/srit.2308-8893.2021.2.03
Y. Zaychenko, Galib Hamidov, Aydin Gasanov
{"title":"Investigation of computational intelligence methods in forecasting problems at stock exchanges","authors":"Y. Zaychenko, Galib Hamidov, Aydin Gasanov","doi":"10.20535/srit.2308-8893.2021.2.03","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2021.2.03","url":null,"abstract":"In this paper, the forecasting problem of share prices at the New York Stock Exchange (NYSE) was considered and investigated. For its solution the alternative methods of computational intelligence were suggested and investigated: LSTM networks, GRU, simple recurrent neural networks (RNN) and Group Method of Data Handling (GMDH). The experimental investigations of intelligent methods for the problem of CISCO share prices were carried out and the efficiency of forecasting methods was estimated and compared. It was established that method GMDH had the best forecasting accuracy compared to other methods in the problem of share prices forecasting.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121288284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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