Cass C

Hi Jaromił Many thanks for this, you are right! It should be formatted in list or dictionary, or it won't work. Best  Qikun

I think I am now understand the approach, but generally, how can I add the ordering of these variables, is there any cases that I can learn something from? Variables in my model are already indexed...

Hi Many thanks for this but I did not get the method, could you please share more details on that? model.lp the LP file is attached please have look if it is required. Best  Cass

Yes, I agree with that, its a reasonable idea, as the objective function (minimize) will push the Q in right direction. But it seems the not very fast in finding the feasible solution.  Best  Cass

Many thanks Jaromił, I had a try on this. Seems the iteration time of each step decreased. Not sure if it works (7mins already now), the MPS file is attached and I will be grateful if you could ple...

Hi model.mps How about now? Best  Cass

model 2.zip Hi Jaromił Please have a look on this Many thanks  Cass

Hi Jaromił I have just upload a MPS file numbered123, can you find that? If not, how can I share that with you? Best Cass

Hi Jaromił Many thanks for your feedback. I don't know why general constraints here means that the model is not LP? Also, why do PWL linearization add some  binaries into the model? Now there is on...

Hi Jaromił Thanks for you replying. If I try NLP in my model, it will be tough to solve as there are a large amount of variables. So that is why I have to linearise it. I tried SOCP before and it w...