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Thank you for your answer.

I've made the mistake to ask the question before reading the documentation.

Thank you,
Catalin

Salut,

aplicatia poate fi utilizata si pentru universitati?
Mentionez citeva restrictii:
-cursuri comune pentru studentii (grupe) de la mai multe specializari, de la mai multe facultati
-seminarii/lab. pe grupe/semi-grupe
-posibilitate de a specifica nr de ore/sapt. (curs la 2 sapt.)

Multumesc,
Catalin Maican

It does not... it allocates about 480/560 activities this way...
questions:
-why does this constraint (students work in an hourly interval max days per week) has to weight 100%?
-why max days per week for all/one teacher/s has to be 100%?

if the weight could be lowered it would be more flexible, isn't it?

Thanks,
Catalin

Hi,
I've checked the data again and it seems that I needed more Course rooms.... When I added them FET could solve the timetable even with 100% all contraints

One more question: is it possible to have for students one free day? For teachers I use "max days per week for all/one teacher/s"
Thanks
Catalin

Thank you for the setting

I do not mind that seminaries go into course rooms... but I do mind that there are a lot of un-allocated activities to rooms (as soft-conflicts)... How do I get rid of them?

If I set the constraints to 100% FET cannot generate a timetable... if not (<99%) I get unallocated activities although there are free rooms.

Catalin

Sorry... I've forgot to delete some constraints..

this is the correct file.

I think you are wrong. Add preferred rooms 100% for seminars: all rooms. Then 95% for act. tag seminar, rooms: seminars and projects rooms.

Modify 95% to 90% or 97% or 99%, if it is too much or low.

You cannot have exactly your requirement, you need to find a good value (this 95%), that gives you a good solution, in which all seminar rooms are filled. Maybe a higher value is better, but you need to have a solvable timetable.

Please let me know.

LATER EDIT: In FET, each constraint with 100% is satisfied all the time, with 95% is satifisfied in about 95% of cases (more or less).

Hi,
I've reviewed a little this old topic and I'm still not elucidated... How should I "Add preferred rooms 100% for seminars: all rooms"? Should I go through each activity and specify that if it has seminar the importance to be 100%? That should be a little to much because I have many activities with this tag...

The same is for Courses and Labs...
Please see my input file...

Thanks,
Catalin

I think I know your problem:

activity tag pref rooms: seminar. Please add ALL allowed rooms with 100% and the preferred rooms with 95%. I mean, as it is now, COPY rooms from 95% to 100%.

Please let me know if now is solvable and attach the new file.

For example, if preferred rooms are: R1, R2 and not preferred but allowed are R3 and R4, add 100% R1, R2, R3, R4 and 95% R1, R2.

Ok, it works like that, but it fills up the amphitheaters with seminars/projects (and, of course, courses) and the rooms for the seminars stay empty.

The way I proposed the constraints, it should:
- fill up the amphitheaters (rooms for courses) with course activities (100%);
- fill up rooms for seminars and projects with this kind of activities (100%)
- fill up the rest of amphitheaters with seminars/projects activities (95%)

Please see the attached input file. rooms CP1-6 are the amphitheaters mentioned above, while the BP1-7 (seminar rooms) are almost empty.

Catalin

Through the 2 constraints above I would like something like this:
1. fill in courses and laboratories (100%) in the allocated space
2. fill in seminars and project (100%) in the allocated space
3. for the seminars and projects, if there are not enough rooms fill in other available rooms, meaning rooms for courses and labs (95%)

In my tests:
- FET filled in rooms for seminars (100%)
- _did not_ filled any room for courses and labs

I attache a new input file, this time smaller, with fewer activities
Catalin

Ok...

I have a sample input file filled with everything.

For the new constraints (Activity Tag Space Constraints):
-Course - amphitheaters , 100%
-Labs - laboratories, 100%
-Seminars - 2 constraints - special rooms for seminars and projects 100% AND laboratories + amphitheaters, 95%
-Projects - 2 constraints - special rooms for seminars and projects 100% AND laboratories + amphitheaters, 95%

Please tell me if this constraint set is possible.

[Later edit]: FET stops after about 2-5 minutes with "Simulation interrupted. FET could not find a perfect timetable...."

Catalin

I would find useful the addition of the following constraint:
-space constraint + activity tag constraint

e.g.: for the Activities tagged as "laboratories" to be able to set a certain set of rooms. The same for the Activities tagged as "courses".

(there is a workaround but this requires to specify constraints for all subjects, which is much too much, considering that about half of our activities require a certain set of rooms)

Thank you,
Catalin

I would also find this constraint useful: max gaps per day for a students set

Thanks you,
Catalin

Hi,
Is there a possibility to make this constraint more flexible "Students min hours daily". For teachers there is an explanation that this is flexible so that teachers don't get a class in their "free" day...

How about for students? If I specify min hours daily, the activities would be placed entire week, even if there is only one class per day. Also, specifying min 2 classes/day would result a minimum 10 activities for a set of students, even if these students have only let's say 8 activities... Am I right?

Thanks,
Catalin

Thank you very much!

Catalin

In other words is it possible for a teacher to work only between 7.30 and 13 every day?

catalin