The thesis study is devoted to urgent issues of developing fuzzy models for processing geospatial information and information technology of multi-criteria decision analysis (MCDA) to increase the efficiency of decision-making on the location of municipal solid waste (МSW) landfills.
One of the important steps of waste management reform in Ukraine is the National Waste Management Strategy until 2030, which provides for a gradual transition from landfill to sorting and reuse, recycling or disposal of waste with landfill disposal at "regional" landfills that meet requirements of the European Union. In this direction, it is proposed to develop regional waste management programs, first of all a plan to determine the rational area of coverage and location of "regional" landfills. Solving this problem requires decision-making support based on the processing and analysis of heterogeneous spatial information about municipal solid waste facilities and modeling the impact of environmental, economic, social factors and geomorphometric parameters of the territory.
In the dissertation, an analysis of existing approaches to solving the problems of geospatial objects location is carried out. It is shown that in most cases, if there are several criteria for optimality and the necessary degree of completeness of the description of the real situation, the solution cannot be obtained by analytical 3 methods in an acceptable time. The complexity of the algorithms increases significantly with increasing factors that influence the decision. Considering the fact that the problem of disposing of solid household waste objects is multifactorial, with the information provided in the form of judgments and wishes of experts and often subjective and fuzzy in nature, an approach is proposed that combines the methods of multi-criteria analysis of solutions, the theory of fuzzy sets with geoinformation technologies. The synergy of these approaches allows you to get a more flexible tool that takes into account various decision-making strategies, that is, add to the geographic information
system there are no functionalities that cannot be implemented by selecting locations for objects based only on spatial overlay operations. Thus, the urgent task
is the development and improvement of models, methods and software tools that can be integrated into the geographic information system and provide increased
decision-making on the disposal of solid waste in conditions of multicriteria and uncertainty.The main scientific results of the work are the following.
There were developed GIS-oriented fuzzy two-stage MCDA model for the deployment of MSW facilities, which combines geospatial information about the MSW landfills with estimates and opinion of experts, and also considers the attitude of decision maker (DM) to risk when making decisions. Description of the MCDA model in geographic space is formalized, where alternatives, criteria and other elements of solving the issue have spatial dimensions. A two-stage MCDA model is proposed to increase the analysis efficiency, which allows, at the first stage of macroanalysis, to form a set of acceptable alternatives considering the restrictions imposed by sanitary-construction standards using GIS tools, and at the second stage of microanalysis, to rank the set of acceptable alternatives according to their degree of suitability for MSW objects deployment based on the MCDA methods with obtaining results in the form of a base map.
