question: private List < Solution > normalize ( Population population ) { List < Solution > result = new ArrayList < Solution > ( ) ; double [ ] min = new double [ problem . getNumberOfObjectives ( ) ] ; double [ ] max = new double [ problem . getNumberOfObjectives ( ) ] ; Arrays . fill ( min , Double . POSITIVE_INFINITY ) ; Arrays . fill ( max , Double . NEGATIVE_INFINITY ) ; for ( Solution solution : population ) { for ( int i = 0 ; i < problem . getNumberOfObjectives ( ) ; i ++ ) { min [ i ] = Math . min ( min [ i ] , solution . getObjective ( i ) ) ; max [ i ] = Math . max ( max [ i ] , solution . getObjective ( i ) ) ; } } for ( Solution solution : population ) { Solution newSolution = solution . copy ( ) ; for ( int i = 0 ; i < problem . getNumberOfObjectives ( ) ; i ++ ) { newSolution . setObjective ( i , ( max [ i ] - ( newSolution . getObjective ( i ) - min [ i ] ) + offset ) / ( max [ i ] - min [ i ] ) ) ; } result . add ( newSolution ) ; } return result ; }
target:  Normalizes the population using a reference point calculated by the maximum extent of the population plus an offset.