Table 1 Payoff table.
From: A multi-objective fuzzy programming model for port tugboat scheduling based on the Stackelberg game
|  | f1(X) | f2(X) | … | ft(X) |
|---|---|---|---|---|
X(1) | f11 | f12 | … | f1t |
X(2) | f21 | f22 | … | f2t |
… | … | … | … | … |
X(t) | ft1 | ft1 | … | ftt |
From: A multi-objective fuzzy programming model for port tugboat scheduling based on the Stackelberg game
|  | f1(X) | f2(X) | … | ft(X) |
|---|---|---|---|---|
X(1) | f11 | f12 | … | f1t |
X(2) | f21 | f22 | … | f2t |
… | … | … | … | … |
X(t) | ft1 | ft1 | … | ftt |
