"Reitsma and Bittner (2003) take an ontological approach to scale, seeing scale as being determined by the relationship of the granular structure of reality and the resolution of observation. … Stevens (1946) uses scale to refer to a system of divisions employed by a measurement device. He identifies four types of measurement scales: nominal, ordinal, interval and ratio. The classification is based on the permissible statistics, which can be performed on measurement results. It is obvious that the type of measurement scale employed in a measurement process will greatly influence the result. … The different language communities apply a vast number of distinct scales or partitions to their quality spaces in order to communicate. … The types of scales as defined by Stevens (1946) serve as central classification criteria for semantic reference spaces. The purpose of a semantic reference space is to partition a quality space in such a way that symbols can be assigned to individual partitions." (Probst, 2007).
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