“…Therefore, the model can be useful for an entity (expert, broker, or bidder) to determine relevant improvement actions to improve currently existing products. The proposed model was developed by combining these instruments: SMART(-ER) method (S-specific, M-measurable, A-achievable, R-relevant, realistic, or reward, T-'based on timeline' or timebound, E-exciting or evaluated, R-recorded or reward) [32], brainstorming method (BM) [33], survey with Likert scale [1,[34][35][36], Weighted Sum Model (WSM) [3,[37][38][39], relative states scale [3,4,40], and Naïve Bayesian Classifier (NBC) [41][42][43][44]. The general concept of the model is shown in Figure 1.…”