I. J. Computer Network and Information Security, 2023, 4, 25-35 Published Online on August 8, 2023 by MECS Press (http://www.mecs-press.org/) DOI: 10.5815/ijcnis.2023.04.03 This work is open access and licensed under the Creative Commons CC BY 4.0 License. Volume 15 (2023), Issue 4 The Method of Restoring Parameters of Mobile Agents in a Unified Dynamic Environment Considering Similarity Coefficients Valerii Zavgorodnii* State University of Infrastructure and Technologies, Kyiv, Ukraine E-mail: zavgorodniivalerii@gmail.com ORCID iD: https://orcid.org/0000-0002-8347-7183 *Corresponding author Nadiya Braykovsʹka State University of Infrastructure and Technologies, Kyiv, Ukraine E-mail: nad.braykovsky@gmail.com Oleksandr Yarovyi Institute of Special Communication and Information Protection of the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine E-mail: getem13@ukr.net Anna Zavgorodnya State University of Infrastructure and Technologies, Kyiv, Ukraine E-mail: annzavgorodnya@gmail.com Viacheslav Liskin National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine E-mail: liskinslava@gmail.com Oleg Mukhin National Technical University of Ukrai ne “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine E-mail: o.mukhin01@gmail.com Received: 06 March 2023; Revised: 27 May 2023; Accepted: 20 June 2023; Published: 08 August 2023 Abstract: We described the placing of the mobile agents in a dynamic environment. It formed a dynamic environment for a complex of dynamically changing mobile agents. We described a two-level system of connections at the global and local levels of interaction. Such a scheme allows you to support the survivability of a dynamic environment. We presented the model of placement of mobile agents in a dynamic environment, which forms the basis of the trajectory of interaction between mobile agents, enabling us to combine the dynamic environment into a unified dynamic environment. The proposed method for mobile agents’ parameters restoring in a unified dynamic environment, taking into account the similarity coefficients, allows restore 80% parameters of an inaccessible mobile agent. This indicates the high efficiency of the object’s description in the form of a unified dynamic environment in order to maintain its integrity. Index Terms: A Unified Dynamic Environment, Mobile Agent, Interaction Trajectory, Similarity Coefficients, Interaction Matrix, Parameter Recovery, Placement Methods. 1. Introduction The unified dynamic environment (UDE) is an information model of a complex subject area [1, 2]. It includes information objects – mobile agents (MA), connections between them, the environment and processes that accompany