Synonyms
Monotonic constraints
Definition
A constraint C is monotone if and only if for all itemsets S and S′:
Key Points
Monotone constraints [13375,1376,–3] possess the following nice property. If an itemset S violates a monotone constraint C, then any of its subsets also violates C. Equivalently, all supersets of an itemset satisfying a monotone constraint C also satisfy C (i.e., C is upward closed). By exploiting this property, monotone constraints can be used for reducing computation in frequent itemset mining with constraints. As frequent itemset mining with constraints aims to find frequent itemsets that satisfy the constraints, if an itemset S satisfies a monotone constraint C, no further constraint checking needs to be applied to any superset of S because all supersets of S are guaranteed to satisfy C...
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Leung, C.KS. (2018). Monotone Constraints. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_5048
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DOI: https://doi.org/10.1007/978-1-4614-8265-9_5048
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