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ŠUMARSKI LIST 9-10/2018 str. 43     <-- 43 -->        PDF

measures in the process of UGS accessibility indicator modelling.
Indicators are specific forms of information that indicate the current status, progress and remaining distance to the desired destination (Šiljeg, 2016). They can serve as instruments for making management decisions in the context of monitoring changes of the urban environment quality. In the process of accessibility indicator modelling, an adjustable scale of value (from 1 to 5) was used, because this allowed comparison between the objective created measures. This was due to the impossibility of comparing the different evaluated variables, such as measure stated in percentage and measures stated in square meter per capita. Thus, each of the seven objective measures was reclassified in the range of values from 1 to 5, based on defined intervals and the natural breaks method used for the variable of UGS per capita. The lowest value (1) indicates the worst results in the context of UGS accessibility, whereas the highest (5) indicates the best. All seven variables had an equal weight coefficient (0.142) while determining the UGS accessibility indicator. The Analytic Hierarchy Process (AHP) was not used because it is not precise enough to rank the importance of different variables (functional levels), due to the highly subjective perception of UGS accessibility. Each objective measure within the indicator was multiplied by a constant value of 0.25. This value was used to normalise values from 1-5 to 0-1, so the formula for the accessibility indicator was:
. . .
IACESS = UGS accessibility indicator
0.25 = constant values in the formula chosen in order to normalize the initial values from 1 to 5 in the range from 0 to 1, so that the single measure of the formula for the normalized value can be read as 0.25 * measure - 0.25