Fortnightly activities (odd and even weeks)

[Amelk]

Question: Please, are you know system or algoritm where solve the porblem of odd and even weeks and activities?

[Liviu Lalescu]

Question: Please, are you know system or algoritm where solve the porblem of odd and even weeks and activities?

Thank you also for your translation!

There are some people who work with FET and use tricks for odd and even weeks (fortnightly activities). I describe one trick in the FET FAQ, and I wrote about it by e-mail. I don't know other programs which solve for fortnightly activities.

I'll ask a person who uses FET tricks for fortnightly activities to contact you by PM.

[Amelk]

Ok! Thanks.

[Amelk]

Liviu, sorry for disturb. Your recomendation about fortnightly activity whery important and interesting, I am using it, but when I print timetable, I don't know fortnightly activity and a regular activity

[Liviu Lalescu]

Liviu, sorry for disturb. Your recomendation about fortnightly activity whery important and interesting, I am using it, but when I print timetable, I don't know fortnightly activity and a regular activity

You can add an activity tag for fortnightly activities and FET will show this tag in the timetable.

Please tell me if this solves your problem.

[Volker Dirr]

Please read also this:
http://www.timetabling.de/manual/FET-manual.en.html#id_36

[Amelk]

Hello. Thanks for your help. I solve my problem for odd and even weeks, I used tag  for activities. Thanks

[Filipe de Moraes Paiva]

I have a similar problem. I have teachers who teach in one saturday and teachers who teach in the other. So the students have physics and biology one saturday and geografy and history in the other saturday.

[Volker Dirr]

hmmm. can you also please read this:
Please read also this:
http://www.timetabling.de/manual/FET-manual.en.html#id_36

i think i discriped it there. if you don't understand please ask more precisly, because currently i don't know how to explain better. what is the point you don't understand at that explaination?

[Filipe de Moraes Paiva]

Thanks for your answer.

I my school, physics, geography, history and biology happens only on tuesdays, thursdays and saturdays. Others happens only on mondays, wednesdays and fridays. But physics and history alternate saturdays with geography and biology, the students go to school every saturday to study either physics and history or geography and biology.

A physics teacher teaches each group of 30 students 4 times a week. May be a double class on tuesday and a double class on thursday, every week, completing 4. But, for an other group of 30 students,  could be a double class on tuesday, a single class on thursday and a double class every other saturday, so one week with 3 classes and the other with 5, completing (average) 4 classes a week. It is similar with history etc.

I would like Fet to chosoe freely between those two possibilities for each group of students and for each teacher.  How can I do that?

[Volker Dirr]

Fet is not an activity planing tool.
FET can't choose activities. You must say what exact activity you want.

so you must choose what variant (compare http://www.timetabling.de/manual/FET-manual.en.html#id_36 ) so you prefer. select the variant you want to have and do it like i wrote there.

You can also do the exact way if you prefer.
so add "two" weeks. so fornightly activitiies must be added only once and "normal" activities must be added twice. but that mean much work work in adding activities and constraint. you must know yourself if the it make sence to do so much work to get a better timetable. it's difficult to say, because i don't know your dataset/school. in worst cases you don't get a better timetable, but have much more work. in best cases your timetable will be much better. i can tell you only if i know your whole dataset and tried myself both variants.

[Filipe de Moraes Paiva]

Thanks. I shall try the exact. I was affraid FET would make two different weeks and I need two equal weeks, only the saturdays can and must be different

[Liviu Lalescu]

Thanks. I shall try the exact. I was affraid FET would make two different weeks and I need two equal weeks, only the saturdays can and must be different

The "exact" method defined here makes the two weeks different, and you have no constraints to make them equal in other days than Saturdays. I highly recommend to use tricks and schedule only for one week. Or, try a small test for 2 weeks and see what you get.

[Volker Dirr]

... only the saturdays can and must be different

in previous mails you also talk about difference at all other days.
if only saturday is different i also recommend using a trick. the chance to get a better timetable if only sasturday is different is pretty low. in most cases i even guess you get the same table like using one of the tricks.

if only saturday is different you can also think about what liviu said:
just do a timetable for one week and generate it.
then save that timetable under a different filename.
change saturday activities and generate again, maybe even with locked activities at monday to friday.