Messages

Thank you for asking.

Please write an e-mail to me:
u6m4@timetabling.de

Due to the small number of customers, I calculate the price individually, depending on the purchasing power of the country, the school size, and the desired features.

I will tell you more detailed by e-mail. Please let me also know if all is working fine so far or if there is a missing feature.

Good question.
If your timetable is not too difficult (or in worst case if we don't have better ideas) i suggest this as an quick and "dirty" solution:

Just set "not available" times for that 2 guys; so that it is impossible for them to have overlapping shifts.

I think your idea 2nd method with 6 activities + 2 dummy activities is "wrong", because in your variant it might happen that the 2 dummies are at the first and the last day. So in fact also "consecutive". So you might also add a max 7 days constraint for that 2 dummy activities. I guess this "fixed" method 2 is faster than method 1.

If you ask me: There are so many other things constraints that are more important, you should care about your idea only if you have got an simple data set and all other constraints are successfully added. Don't forget that there are so many things that can affect your "good spreading". Like an ill teacher, an ill student, a public holiday, a project day, ... . In my opinion you will spent too much time into spreading it "too well". Just use a simple min n day constraint and it is fine.

The timetabling.de statistics is:

May:
Number of different ip-s to download fet exe: 237
Number of different ip-s to download fet Qt 5 - 32 bit exe: 54
Number of different ip-s to download fet Qt 5 exe: 52
Number of different ip-s to download fet linux: 82
Number of different ip-s to download fet source: 152

April:
Number of different ip-s to download fet exe: 198
Number of different ip-s to download fet Qt 5 - 32 bit exe: 77
Number of different ip-s to download fet Qt 5 exe: 58
Number of different ip-s to download fet linux: 94
Number of different ip-s to download fet source: 410

March:
Number of different ip-s to download fet exe: 223
Number of different ip-s to download fet Qt 5 - 32 bit exe: 67
Number of different ip-s to download fet Qt 5 exe: 60
Number of different ip-s to download fet linux: 101
Number of different ip-s to download fet source: 136

I will wait two more days, to get the whole statistics of this month.

In fact there is also an other larger mirror:

Microsoft Store analytics digest

April 1, 2026 to April 30, 2026
Page views    Installs    Rating
1,354 Total    671 Total    - Stars


March 1, 2026 to March 31, 2026
Page views    Installs    Rating
1,798 Total    889 Total    - Stars


February 1, 2026 to February 28, 2026
Page views    Installs    Rating
1,969 Total    1,021 Total    - Stars


January 1, 2026 to January 31, 2026
Page views    Installs    Rating
939 Total    519 Total    - Stars

Well, his idea is not about the xml file. His idea is that you can write (or even speak) and just say "There is a new teacher at our school. Please add Mr. Smith. He is not available on Monday." and then the AI adds the teacher name and adds a not available time constraint.

That is much too much text on a single screen. Don't forget that some guys work with an 13" display and 1366 x 768 Pixels only.

Sadly a very big task. You can't just add a text editor and add an already existing LLM. It won't work that way.

Good question.
Also what about "hidden" tags. Must be removed first.

Sadly difficult.

It is easy if the activities contains only 1 tag, but it will be more difficult if there are 2 tags.

Example:
activity 1: Tag "C"
activity 2: Tag "B" and "D"
activity 3: Tag "E" and "A"
activity 4: Tag "A" and "E"

So first: Just we care about the order? So should be activity 3 the same order as activity 4?
And after that: How to order activity 3 and 1?
...
 

Please read the chapter "Years, groups and subgroups":
https://www.timetabling.de/manual/FET-manual.en.html#id_12

Ask again if you still don't understand it.

The algorithms i am using are:
xz (XZ Utils) 5.4.5
liblzma 5.4.5

so my files are much smaller than yours. I use tar (GNU tar) 1.35

i kdiffed. there are small differences in the archives.

the file sizes of the new compress files (compressed by me) are:
11.863.740 for the 20_22 file
11.859.196 for the 12_40 file

I read that you can avoid that problem by using the "--reproducible" flag.