  Each decision-making tool should be tested and validated in real case studies
to be practical and fit to global problems. The application of multi-criteria
decision-making methods (MCDM) is currently a trend to rank alternatives. In
the literature, there are several multi-criteria decision-making methods
according to their classification. During our experimentation on the Combined
Compromise Solution (CoCoSo) method, we encountered its limits for real cases.
The authors examined the applicability of the CoCoFISo method (improved version
of combined compromise solution), by a real case study in a university campus
and compared the obtained results to other MCDMs such as Preference Ranking
Organisation Method for Enrichment Evaluations (PROMETHEE), Weighted Sum Method
(WSM) and Technique for Order Preference by Similarity to the Ideal Solution
(TOPSIS). Our research finding indicates that CoCoSo is an applied method that
has been developed to solve complex multi variable assessment problems, while
CoCoFISo can improve the shortages observed in CoCoSo and deliver stable
outcomes compared to other developed tools. The findings imply that application
of CoCoFISo is suggested to decision makers, experts and researchers while they
are facing practical challenges and sensitive questions regarding the
utilization of a reliable decision-making method. Unlike many prior studies,
the current version of CoCoSo is unique, original and is presented for the
first time. Its performance was approved using several strategies and
examinations.
