FET Forum

FET Support (English) => Get Help => Topic started by: pg788 on December 16, 2018, 09:44:03 AM

Title: Less activities placed after deactivating constraints
Post by: pg788 on December 16, 2018, 09:44:03 AM
Is it possible that the software places less number of activities after some constraints are relaxed/removed/deactivated?
I would expect that relaxing or ignoring constraints should allow more flexibility and hence easier placement of activities. Does the opposite indicate a bug in my data?
Title: Re: Less activities placed after deactivating constraints
Post by: Liviu Lalescu on December 16, 2018, 10:01:15 AM
There are cases in which this is possible. Because additional constraints may help FET.

Think about locking a timetable. It is solved instantly.
Title: Re: Less activities placed after deactivating constraints
Post by: Liviu Lalescu on December 16, 2018, 10:14:43 AM
Also deactivating/removing/lowering constraints may change the initial order of the activities when placing them on the timetable, so that if there is a difficulty it may come earlier.
Title: Re: Less activities placed after deactivating constraints
Post by: pg788 on December 16, 2018, 11:12:34 AM
I see, thanks.