Abstract:

Aiming at the evaluation of fuzzy and nondeterministic phenomenon, we propose an evaluation method based on fuzzy mathematics and the medium truth theory. Both the fuzzy mathematics method and the medium truth theory method study and deal with the fuzzy phenomenon from the angle of quantity. But fuzzy synthetic operator of the fuzzy mathematics method is difficult to determine when there are multiple factors, and the measurement range limit in ［0,1］. The medium truth theory method also has some limitations in dealing with the situation of multiple factors when evaluate the secondary indicators. Therefore, we combine the fuzzy mathematics method and the medium truth theory method: using the former to evaluate the secondary indicators, and the latter for the first indicators, thus the best option is obtained. Finally, we apply the proposed method to software quality evaluation and compare its results with those of the fuzzy mathematics method and the medium truth theory method, Test results show that our method is feasible and reasonable, and has certain advantages.

Key words: fuzzy mathematics;medium truth theory;measurement range;indicator system;quality measures