Comparative evaluation system is a systematic process for data collection, measurement, and analysis of the characteristics of different entities to generate a final rating and support decision-making processes of stakeholders for specific goals.
Evaluation of a single object and/or subject in general does not provide complete information for decision-making. In order to support a rational decision, comparative evaluation could be necessary. Vartiainen (2002) argues that comparative evaluation refers to a cognitive process in which the evaluation and the findings of the evaluation process are set within a comparative framework. This approach establishes an assessment on the evaluand (the subject of an evaluation), comparing it with objects of the same category (cf., Cooksy 1999). To put it differently, the attribution of value is in relative terms, through.