What is arc consistency in scheduling problems?
Arc consistency is a property of a constraint satisfaction problem where for every value of a variable, there exists a compatible value in the connected variable.
How does arc consistency help in scheduling?
It reduces the search space by eliminating values that cannot participate in any valid solution, making scheduling more efficient.
Can you give an example of arc consistency in a scheduling scenario?
Sure! If you have two tasks that cannot be scheduled at the same time, arc consistency ensures that if one task is assigned a time, the other task's possible times are adjusted accordingly.
What algorithms are used to enforce arc consistency?
Common algorithms include AC-3 and AC-4, which systematically check and enforce arc consistency across the variables.
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