▁But ▁that ▁rule ▁surely ▁would ▁have ▁few ▁ad her ence ... ". ▁Nevertheless , ▁it ▁is ▁often ▁used ▁in ▁combination ▁with ▁the ▁Max imin ▁rule ▁in ▁the ▁form ulation ▁of ▁Hur w icz ' s ▁ ▁optim ism - p ess im is im ▁  ▁rule ▁( Res nik ▁ 1 9 8 7 , ▁French ▁ 1 9 8 8 ) ▁with ▁a ▁view ▁to ▁mit ig ate ▁the ▁extreme ▁conserv at ism ▁of ▁Max imin . ▁ ▁Mathemat ical ▁programming ▁form ulations ▁▁ ▁To ▁bring ▁out ▁more ▁force fully ▁that ▁info - g ap ' s ▁robust ness ▁model ▁is ▁an ▁instance ▁of ▁the ▁generic ▁Max imin ▁model , ▁and ▁info - g ap ' s ▁opportun eness ▁model ▁an ▁instance ▁of ▁the ▁generic ▁Min imin ▁model , ▁it ▁is ▁instruct ive ▁to ▁examine ▁the ▁equivalent ▁so ▁called ▁Mathemat ical ▁Program ming ▁ ▁( MP ) ▁formats ▁of ▁these ▁generic ▁models ▁( E cker ▁and ▁K up f ersch mid , ▁ 1 9 8 8 , ▁pp .   2 4 – 2 5 ; ▁Th ie ▁ 1 9 8 8 ▁pp .   3 1 4 – 3 1 7 ; ▁ ▁K ouvel is ▁and ▁Yu , ▁ 1 9 9 7 , ▁p .   2 7 ): ▁ ▁Thus , ▁in ▁the ▁case ▁of ▁info - g ap ▁we ▁have ▁ ▁To ▁verify ▁the ▁equivalence ▁between ▁info - g ap ' s ▁formats ▁and ▁the ▁respective ▁decision ▁the or etic ▁formats , ▁recall ▁that ,