Abstract
One of the most difficult problems in construction is taking objective decisions. A decision-making process is very complicated and time consuming (due to the complex nature of construction projects). Many experts with extensive knowledge of construction industry take subjective decisions related to verbal methods of decision-making. Difficulties are related mostly to the creation of a set of relevant criteria, providing answers to the decision-maker’s questions. A set of proper criteria and mathematical tools (such as computer calculation algorithms with multi-criteria analysis) could significantly improve objective decision-making. The paper presents ESORD – an informatics tool allowing to establish a hierarchy (ranking) of different types of solutions on the basis of mathematical calculation. The authors present a comparison of different methods used for multi-criteria decision-making.
Highlights
One of the main problems faced by every investor/project manager is selecting an implementation variant for an investment project
A decision-making process is an activity which results in taking a specific decision
The ESORD IT tool contains groups, types and kinds of criteria entered into the system, which have been defined in accordance with the aspect of selection of the apartment variant with reference to preferences of potential purchasers and users
Summary
One of the main problems faced by every investor/project manager is selecting an implementation variant for an investment project. Experts are expected to make assessments in accordance with their professional knowledge and the construction art – reliable, objective and considering the specific character of the given decision-making situation. It would be difficult, to clearly define individual preferences, system of values, and motivations of an expert. In order to as much as possible eliminate the causes of interference with decisions made, an original survey of decision-maker preferences has been developed, as well as the decision-making variant ranking procedure, implemented as the ESORD calculation tool (Expert System for Assessment of Developer Solutions) (Tyszka 1986; Kozielecki 1977). In the opinion of the authors, the purpose of the survey developed within the framework of this research was – in the first place – to clearly and precisely define criteria for assessment of variants, referring to the problem of selecting the best investment (e.g. premises, building) from the perspective of expectations particular to potential recipients (users) (Peng, Tzeng 2013; Zalewska, Zalewski 2012)
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