Started by kdsayang, April 02, 2008, 04:57:30 PM
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QuoteAre you suggesting constraint teacher(s) max hours continuously?
Quote Please tell me, is such a constraint really important for your institution or other institutions?
QuoteMaybe you need to have a gap between building changes, in which case you can use the space constraint min gaps between building changes. But if your rooms are in the same building, it is not the case.
QuoteFor lecturers: don't you want to have for instance teacher T1 to have only maximum 4 periods in a row? After that, a pause and after that other maximum 4 periods. Isn't that "constraint teacher max hours continuously"? I do not understand why you say this is not what you need.
QuoteIs it not good enough a one hour pause? It is very complicated (impossible?) to be able to choose 1 or 2 periods gaps. Please let me know.
QuoteI'll begin working on this constraint, could you please send me your file so I can test the new constraint? It is easier if you could send it on my email address (see FET contacts page).
QuoteI can only impose a constraint max hours (in fact periods) continuously for a teacher or for all teachers. So, it will impose that after x (say 4) periods they will have 1 period gap at least.I will begin working now on this constraint. I have thought and it seems realizable.I think it will be ready today or tomorrow. I'll let you know.
QuotePS: Why did you add constraints teacher max days per week for many teachers with 5 days, when you have a 5 days week? The constraints are useless, only the one with 4 days is useful.
QuoteI cannot say to FET: leave 2 periods, I can only say: leave at least 1 period. In practice, there will be 1, 2 or more free periods, but guaranteed only one. It is because of the algorithm that I cannot make it with 2 or more. I hope it is good enough for you.
QuoteThe constraint will be named teacher(s) max hours continuously and you can specify the maximum amount of contiguous hours (periods) for teacher T or all teachers, for instance 4.
QuoteDoes this mean that I can add two constraint which is 4 and 3 period?? This is because, my time table mainly consist only 3 and 4 max hours continuously period....
QuoteMeans that you can add constraints for each teacher, one teacher has for instance max 3 hours continuously and another 4.The algorithm is ready now, I will begin implementing the interface and open/save code and test after that. I just tested for your file a bit and it is OK.
QuoteI have to add a check. Say activity A has duration 4. Then you cannot a constraint of type max hours continuously with less than 4 (say 3). Is that OK with you?