Ching Chang
- Total activity 9
- Last activity
- Member since
- Following 0 users
- Followed by 0 users
- Votes 2
- Subscriptions 1
Activity overview
Latest activity by Ching Chang-
Ching Chang commented,
Hi Jaromił, You are right that you assume the J list is defined this way due to my other community post.Sets J & V both are the index of workstation,but when they come to constraint(8); J is prede...
-
Ching Chang commented,
Dear Jaromił: I also found a mistake(as the red rectangle) from your code below. Index J should be revise as index V. I forget to explain what constraint (8) means: It ensures that the selectedsucc...
-
Ching Chang commented,
Dear Jaromił: Thank you for your idea. I have tried this but it is in feasible.The error report as the enclosed picture. On my opinion, I thought the reason was that you only create one variable X...
-
Ching Chang created a post,
Python: Constraint coding problem.
Hi, I would like to know how to code the constraint below. #index i Task (i = 1, 2, …, I) k Artificial nodes(k = 1, 2, …, K) j,v Workstation (j = 1, 2, …, J；v=1, 2, …,V) u T...
-
Ching Chang commented,
Dear Jaromił Thank you for solving my problem. B.R.
-
Ching Chang created a post,
Python:How to create a constraint which includes a variable and a kind of index(two indices simultaneous)
AnsweredI would like to write the constraint code as the content of picture. #index J=['j1','j2','j3','j4','j5','j6','j7','j8','j9','j10','j11','j12','j13','j14','j15','j16','j17','j18','j19','j20', 'j21'...