Activites overlapping issue

[mohammad-k]

Hi,
I would like to specify a set of activities are not overlapping but i have  a huge number of activities (430).
Is there another constraint or a deafult settting on subjects to apply my request !!

[Volker Dirr]

by default they are not overlapping if they include the same students OR teachers OR room.

[mohammad-k]

Thanks for your reply.
But what if the number of students are not the same and i want to not overlapping !!

[Volker Dirr]

it doesn't matter if the number of students is the same or not. you need to add "unique students" as subgroup name and "courses" as FET groups. FET will automatically care about not overlapping.

[mohammad-k]

Please can you explain to me what is the student subgroup name !!

In the students list i have:
<Students_List>
..
<Group><Name>Section-33</Name><Number_of_Students>29</Number_of_Students></Group>
<Group><Name>Section-35</Name><Number_of_Students>27</Number_of_Students></Group>
</Students_List>

In the activities list i have:
...
<Activity>
<Subject>Arabic_Section-33</Subject>
<Students>Section-33</Students>
...
<Id>1</Id>
</Activity>

<Activity>
<Subject>Arabic_Section-33</Subject>
<Students>Section-33</Students>
...
<Id>2</Id>
</Activity>

<Activity>
<Subject>Music_Section-33</Subject>
<Students>Section-33</Students>
...
<Id>3</Id>
</Activity>

<Activity>
<Subject>Art_Section-35</Subject>
<Students>Section-35</Students>
...
<Id>4</Id>
</Activity>

First question: Is the student field in the activities contain an error !?
Second question: When was the data like this i tried to set a constraint ("ConstraintActivitiesSameStartingTime").
So the result was=>  FET warning:The constraint is impossible to respect, because there are the activities with id-s 1 and 3 which conflict one with another, because they have common students sets or teachers or must be not overlapping.

For that reason i made a change in the students list ( set different group name), so the constraint was successfully generated but a new error was occurred in the data view ( overlapping activities ). So now how can i fix this issue and how can i add unique students as subgroup name !!

Regards

[Volker Dirr]

Example:

You have got 2 students:
Mohammad selected subject Arabic-1A and subject Mathematics-1A.
Isaac selected subject Arabic-1A and subject Islamic-1A.

Then you need to add 3 groups in FET of course:
"Arabic-1A", "Mathematics-1A" and "Islamic-1A".

And you need to care about correct subgroups now:
Arabic-1A needs subgroups Mohammad and Isaac.
Mathematics-1A needs subgroup Mohammad.
Islamic-1A need subgroup Isaac.

This work fine as long as you have got only subject "Arabic-1A" or if you know exactly the student who will visit that subject.
If you don't know that, you need to use the custom FET-mapr version.

[mohammad-k]

Thanks again,
If you meant by course the subjects_list i did it:
<Subject> <Name>Arabic-1A</Name> </Subject>
<Subject> <Name>Mathematics-1A</Name> </Subject>
<Subject> <Name>Islamic-1A</Name> </Subject>

and the subgroups that you mentioned are in subjects or in students ??

and now what about activities, how should i connect the students group and subgroup to each activity !?

[Volker Dirr]

"Arabic-1A" is a group name. Subject name is "Arabic".
subgroups are sub-groups of groups. So you connect subgroups to groups simply by adding subgroups into groups.

[mohammad-k]

Sorry for bothering you sir, but i still have unknown points.
1. You mean i shoud add sub-group in the students list and and in the subjects list !!?
2. I have asked about the connection between activities , subjects and students, this point that make me confused.

So, if you please and if you have time can you declare to me more about the steps that should i follow in students, subjects and activities. And if you can give me an example or an old fet sample to help me .

I'm so thankful

[Volker Dirr]

subgoubs can be added only to groups, not to subjects.
if you set up the students structre correct (groups and subgroups) then FET knows automatically that those activities are allowed at the same time or not.

[mohammad-k]

Ahh, so what i have to do now is to set the students group and sub groups as you told me before about Arabic and Arabic-1A .

Ex: let we say that i set student group with two sub-groups.

* group: Arabic; sub-group: Arabic 1-A.

1. Activity for subject Arabic with 6 sub-activities (id's from 1->7)
2. Activity for subject assisted arabic with 6 sub-activities (ids from 8->).
All of them connected to student group Arabic in their activities.
Ex:
<activity>
...
<Id>1 </Id>
<student> Arabic </student>
...
</activity>

..

Till id number 13
<activity>
..
<Id>1 </Id>
<student> Arabic </student>
...
</activity>

Does the structure of students and the connection betw studnets and activities correct !??

And in that structure does the constraint same starting time will set successfully without conflict of same students ?

Thanks alot for your help.

[Volker Dirr]

no, not like that. that will work only for a single subject, but not for many. You must do it like i wrote: subgroup is a student name.

[mohammad-k]

OK, so i can connect them through the sub-group student name.

Reference to that scenario the students list must be filled with all the courses i have and if the course has section so i must set it in the sub-group, like the following structure

<Students_List>
<group>
   <Name> Arabic-1 </Name>
   <subgroup>
       <Name> Arabic-1A </Name>
   </subgroup>
   <subgroup>
       <Name> Arabic-1B </Name>
   </subgroup>
</gorup>

<group>
   <Name>English-1 </Name>
   <subgroup>
       <Name> English-1A </Name>
   </subgroup>
   <subgroup>
       <Name> English-1B </Name>
   </subgroup>
</gorup> 

<group>
   <Name>Arts </Name>
</gorup> 
</Students_List>

Is this students structure correct ??

[Volker Dirr]

no. still false. if you do it like that the activities of different subjects will always overlap. please do it like i wrote:
the "course"-name is the "group" name.
the "students name" is the "subgroup" name.

[mohammad-k]

Sorry Mr. Volker for my misunderstanding.
students name you talked about is the students tag in the activities list !!?

Let me explain to you what i have.

The course name i have is: Arabic-1, and this course i set it as you wrote in the group name.
<students_list>
<name>Arabic-1 </name>
</students_list>

and the subgroup for this group is Arabic-1A & Arabic-1B which i set them in the subgroups for group name: Arabic-1.

Now is it wrong if i set the students tag in the activities list by the sub-group "Arabic-1A" !!?

If i still false please write to me an example explaining how should be the structure of students and activities.

Thanks