Cplex中，设置绝对gap和相对gap的区别，还有它两个的用法，好混乱，求大神讲解一下。
两个作用差不多，具体可以看文档
gurobi里面是mipgap和mipgapabs
MIPGAP:The MIP solver will terminate (with an optimal result) when the gap between the lower and upper objective bound is less than MIPGap times the absolute value of the upper bound.
MIPGapAbs:The MIP solver will terminate (with an optimal result) when the gap between the lower and upper objective bound is less than MIPGapAbs.
对应cplex里面的epgap和epagap
EpGap是当前值和best lower bound之间的gap
EpAGap是lower bound和upper bound之间的gap，
具体不懂可私聊qq，1254031908