Description:

Games can be part of groups which summarize games by a certain aspect.

Datatype:

set with elements

Possible Values:

{"2.5D Engine: Build", "After Burner series", "Protagonist: Barbarian", etc.}

Similarity Calculation:

|Fi(A) ∩ Fi(B)| is the number of distinct group membership of both games A and B.

|Fi(A) U Fi(B)| is the number of distinct group membership of games A and B.

                   |Fi(A) ∩ Fi(B)|

Simi(A, B) = --------------------- * 100

                    |Fi(A) U Fi(B)|

example:         game A = "Contra (NES)", Fi(A) = ("BPjS / BPjM indexed games", "Contra series", "Game Center CX challenge games")

                      game B = "Zero Tolerance (SEGA Genesis)", Fi(B) = ("BPjS / BPjM indexed games")

              |Fi(A) ∩ Fi(B)| = |("BPjS / BPjM indexed games")| = 1

              |Fi(A) U Fi(B)| = |("BPjS / BPjM indexed games", "Contra series", "Game Center CX challenge games")| = 3

                   Simi(A, B) = (1 / 3) * 100 = 33