Picture Fuzzy Rough Set and Rough Picture Fuzzy Set on Two Different Universes and Their Applications

Algorithm 1

Determine the best choice of rough picture fuzzy soft sets over two different universes.

	Step 1. Input the picture fuzzy relation , where represents the picture fuzzy relation between the disease and the symptom , which is evaluated by a doctor in advance
	Step 2. Define (patient set) is PFS on symptom , that is,
	Step 3. Compute and write and , respectively, of
	Step 4. By Definition 13, we calculate as
	Step 5. By Definition 14, we compute the cosine similarity measure between the corresponding to and the ideal
	Step 6. Get the best choice to select , that is, we can conclude that patient is suffering from the diseases