基于模糊的体系测定膝关节与骨关节炎的严重级(5)

Fuzzy-Based System for Determining the Severity Level of Knee Osteoarthritis

Fig. 2: Sample Rule Viewer

The simulation of this work was carried out with Matlab 7.6.0 for windows. Designation of values for membership function determination is an important phase in fuzzy system designs. With the membership function, each variable is allocated a level of

association with other variables and their membership functions. The membership function for the input variable ―kneepain‖ is as shown in figure 3:

Fig. 3:Membership function for the input variable ―kneepain‖

Fuzzy-Based System for Determining the Severity Level of Knee Osteoarthritis

The input variable ―kneepain‖ was plotted against another variable ―stiffness‖ to observe the relationship

between both parameters ―kneepain‖ and ―stiffness‖. The relationship is as shown in figure 4.

Fig. 4: Surface viewer for stiffness versus kneepain

Another factor considered in the course of the research is the effect of natural phenomenon like age on

the level of severity of knee osteoarthritis.

Fig. 5: Effect of natural phenomenon