Originally posted by: JamesGordon16549879

Hello  everyone!! ,

I am making a model with Cplex for scheduling, patient on a hospital, on my model I want integer three objective function that returns different kind's of units 

1. St Obj fans  maximize and returns the number of patients that were assigned   in the hospital (number of patients)

2nd Obj fun, minimize the distance between the patient and the doctor (distance)

3rd obj minimize the due date.  (days)

this link helped me to understand how to implement the multi objective problems on OPL 

https://www.ibm.com/developerworks/community/forums/html/topic?id=193ecefc-757c-4c66-9905-7ac0dd81dc8f&ps=25

but for a problem with different units how could we  handle it ? 

thanks , regards . 

Hi,

if the model is the same for all units then you could rely on the example you mentioned.

If the models are different, you could freeze some decision variables in the 2nd and 3rd model according to the results you got before.

regards

Originally posted by: JamesGordon16549879

thank you Alex ,

yes it is the same  model with different  obj func that has differents units , what kind of approch do you advice me for if further i want to implement a flow control  with using the same model with different data. 

regards.