Activation Requirement

Concept

An activation requirement is the Boolean condition in an Extended Conditional Constraint Satisfaction Problem (ECondCSP) constraint that determines when a corresponding preserved semantic constraint applies. ECondCSP constraints are represented as vectors of activation-requirement/semantics pairs, enabling parts of a constraint to remain meaningful even when some variables are inactive.

First seen 8/12/2026

Last seen 8/12/2026

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Activation Requirement

Definition

An activation requirement is a Boolean expression over the activity or inactivity status of variables in an Extended Conditional Constraint Satisfaction Problem (ECondCSP). In an ECondCSP extended compatibility constraint, activation requirements identify the variable-activity conditions under which a corresponding preserved semantic constraint is retained and enforced. [C1]

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ECondCSP Builder ← uses 96% 3e

ECondCSP Builder incorporates activation requirements in ECondCSP constraint definitions.

Extended Conditional Constraint Satisfaction Problem ← uses 97% 2e

ECondCSP includes activation requirements as part of its extended constraint definition.

Compose Pseudocode ← uses 95% 2e

The compose pseudocode processes activation requirements as part of constraint composition.

Extended Conditional Constraint Satisfaction Problem part of → 96% 1e

Activation requirements are a core component of ECondCSP constraints.

LINKED ENTITIES

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ECondCSP Builder USES Extracted graph relationship

Extended Conditional Constraint Satisfaction Problem USES Extracted graph relationship

Compose Pseudocode USES Extracted graph relationship

CITATIONS

12 sources

12 citations — click to expand

[1] C1: An activation requirement is a Boolean or binary expression over activity/inactivity status of variables and determines when preserved semantics applies. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[2] C2: An ECondCSP constraint is represented as a vector of activation-requirement/preserved-semantics pairs. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[3] C3: ECondCSP extends CondCSP compatibility constraints so some semantics may be preserved even when some variables are inactive. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[4] C4: The `(a=b) ∧ (c=d)` example illustrates preserving `a=b` when `c` or `d` is inactive. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[5] C5: The first constraint-vector element convention states that all variables are active, and activation requirements for a given constraint are disjoint. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[6] C6: An ECondCSP constraint is satisfied if no activation requirement holds, or if one holds and its preserved semantics is satisfied. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[7] C7: The compose procedure outputs a vector of pairs of the form `(activation-requirement, semantics)`. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[8] C8: For an atomic constraint, compose creates an activation requirement that is the conjunction of the existence variables of all variables in the constraint. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[9] C9: AR(C) is defined as the ordered set of activation requirements for an ECondCSP constraint C. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[10] C10: During transformation to CondCSP, the builder loops over activity/inactivity truth assignments and adds constraints only when an activation requirement is satisfied. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[11] C11: Transformation adds shadow variables with domain `{0}` and makes each original variable active iff its shadow variable is inactive. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation

[12] C12: The two-variable example includes activation requirements for `a` active/`b` active and `a` active/`b` inactive with different preserved semantics. Automatic test program generation using extended conditional constraint satisfaction - Intranational Business Machines Corporation