*4.4. Calculation of the Entropy Weights*

The objective part of the VASMA weights was calculated applying the principles of the information entropy. Decision matrix *P*, where columns denote the set of criteria and rows denote the possible values k of the VAS scales (*k* = 1 . . . 100) was constructed from the data matrix *R* (Table 3).

Values *pkl* presented in Table 5 describe the proportion of responses *k* for the analyzed criterion *<sup>l</sup>* (0 <sup>≤</sup> *<sup>p</sup>kl* <sup>≤</sup> <sup>1</sup> and <sup>P</sup><sup>100</sup> *k*=1 *pkl* = 1). The calculation of the entropy weights presented in Table 6 is explicitly described in Section 3.2.


**Table 5.** Decision matrix *P* for the entropy weighting.


**Table 6.** Entropy weights calculated from the survey data.

\* The more precise weight value for the criterion C3 is 0.20652 and for the criterion C4 is 0.20648.
