Concept of improvement of product considering the qualitative-ecological interactions and weights of attributes

Due to the need to adjust products to customer expectations, it is important to support these actions. Mostly, that still remains a problem in determining precisely the product criteria expected by customers. In this area, there is a need to identify the customer criteria and then process them into product criteria. In addition, it is important to include the environmental aspect so that the customer is satisfied with the landscape of the product. Therefore, the purpose was to develop a concept for product quality assessment that considers criteria relations. This concept will be created based on qualitative-ecological interactions and will also include the weights of product criteria. The proposed conception relies on combined instruments, for instance, the SMART(-ER) method, a questionnaire with comparison in pair method, AHP method, DAMATEL method, Likert scale, WPM method, and relative state scale. The idea is to support an expert in assessing any product that will be selected by an individual customer. The originality of the concept allows the identification of key technical product criteria correlated with customer expectations for utility and aesthetic criteria.