Max x subjects on morning / afternoon

[TongThanhKieu]

I want an additional constraint: Each morning/afternoon has a maximum of x subjects.
For example: One morning there are only a maximum of 3 subjects: 2*Math, Computer Science, 2*English

[Liviu Lalescu]

Thank you for the suggestion! It is possible to do, I think. But I am a bit reluctant about it, how is this useful?

I will add it in the TODO.

[TongThanhKieu]

There are 3 reasons as follows:
1. Students do not feel happy when studying too many subjects.
2. Teachers do not want to move too much between classrooms.
3. In specialized schools, teachers and students want to spend more time studying a subject in depth.

[Liviu Lalescu]

Is it a general constraint, for all the teachers and students sets? Or you want to add it separately, for a teacher/all the teachers/a students set/all students?

[TongThanhKieu]

Is it a general constraint, for all the teachers and students sets? Or you want to add it separately, for a teacher/all the teachers/a students set/all students?

Add this constraint to a student set, a teacher, all teachers or all students.

[Liviu Lalescu]

Sorry, what do you mean by "a tag"?

[TongThanhKieu]

Sorry, what do you mean by "a tag"?

Opps, remove it, please!

[Liviu Lalescu]

OK. I added this in the TODO.

But there are also other modalities to impose this requirement with the existing FET constraints:

- Teacher(s) max room changes per day.
- Increase the duration of some activities to 2 hours and impose a min 1 day between the same subject, with 100% (or teacher(s)/students (set) activity tag max 2 hours daily).
- Min 2 hours daily with an activity tag for students/teachers, and allow empty days. Not all subactivities of a larger split activity should have this tag (you can edit the subactivities for this).

[TongThanhKieu]

Yes, i already know what you have listed and used it. Thank You!
Just more a good option for new user.

[Liviu Lalescu]

You are welcome!

Unfortunately, this constraint might be very strong and timetables impossible, and the user might not know the reason.

Could you please send me your fet file, so I can have a look?

I will have a break now, answer a bit later.

[TongThanhKieu]

https://drive.google.com/file/d/1wCejS44bNuo_khdovKs1s3thJKtpzo7t/view?usp=sharing

This is link to FET file.

[Liviu Lalescu]

Thank you! I generated on it, on the locked and unlocked version. It is an easy file for FET.

But I don't understand, it is in the Official mode, not Mornings-Afternoons.

Hmm... I don't know what to say about your suggested constraint. I would like everybody satisfied with FET, but some things are best kept simple, and some complicated constraints might do more harm than good...

[TongThanhKieu]

Hmm... I don't know what to say about your suggested constraint. I would like everybody satisfied with FET, but some things are best kept simple, and some complicated constraints might do more harm than good...

Yes, i do.