“…The smaller the value, the lower is its total cost. The upper and the lower limits assigned by the user were chosen from the integer set whose elements are in the range of [0, 100], and the upper Table 1 Users' interval Preferences on f 1 User w 1 User w 1 User w 1 User w 1 limit of an evolutionary individual is not smaller than its lower one. The more satisfied the user is with an evolutionary individual, the larger are the upper and the lower limits; (4) command buttons for a population evolving, e.g., "Initialize", "Next Generation", and "End".…”