Three-Way Group Decisions with Incomplete Spherical Fuzzy Information for Treating Parkinson’s Disease Using IoMT Devices

Algorithm 1

Input. An MG SF IISs .

Output. Sorting results of all alternatives.

Step 1. Transform MG SF IISs into MG SF complete ISs by using the presented completion method in Section 3.2.

Step 2. Calculate the attribute weights and the weight of DMs.

Step 3. Calculate the MG SF membership degree of with respect to .

Step 4. Determine the parameter to obtain the adjustable MG SF membership degree .

Step 5. Determine the parameter and calculate the relative loss function and the corresponding threshold for DMs.

Step 6. Calculate the weights of the threshold attributes.

Step 7. Integrate thresholds by using the TODIM method to obtain the optimal threshold.

Step 8. Separate the positive, negative, and boundary domains according to the optimal threshold, further classification of alternatives.

Step 9. According to the principle of , we calculate the score function values of the three domains, respectively, and finally get the ranking results of all alternatives.