“…, tn ≤ t. It is noted that Ai(t1), Ai (t2),…, and Ai(tn) having the same fuzzy set Ai, but look at different times t1, t2,…, and tn, respectively. If these FLRs appear before A j (t − 1) → A i (t), they can be grouped into a fuzzy relationship group as follows: A j (t − 1) → A i1 (t1), A i2 (t2), … , A in (tn), A i (t), and it is called TV-FRG [17]. [28] Hedge Algebras are introduced by N.C. Ho in 1990.…”