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Finally, a logic model of the intervention is developed. This model describes the various activities that will happen and the cascades of effects they are expected to cause toward the desired outcome. Evaluators thereafter use the logic model of the intervention to design a proper evaluation plan to assess implementation, impact and efficiency.
The core of the Logical Framework is the "temporal logic model" that runs through the matrix. This takes the form of a series of connected propositions: If these Activities are implemented, and these Assumptions hold, then these Outputs will be delivered. If these Outputs are delivered, and these Assumptions hold, then this Purpose will be ...
In the case of logic programs with negative conditions, there are two main variants of the satisfiability semantics: In the well-founded semantics, the intended model of a logic program is a unique, three-valued, minimal model, which always exists. The well-founded semantics generalises the notion of inductive definition in mathematical logic. [38]
Logic programming languages, such as Prolog, Datalog and answer set programming, compute by proving that a goal is a logical consequence of the program, or by showing that the goal is true in a model defined by the program.
In particular, the logic programming language Prolog is a Turing complete programming language. Datalog extends the relational database model with recursive relations, while answer set programming is a form of logic programming oriented towards difficult (primarily NP-hard) search problems.
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The word "logic" originates from the Greek word logos, which has a variety of translations, such as reason, discourse, or language. [4] Logic is traditionally defined as the study of the laws of thought or correct reasoning, [5] and is usually understood in terms of inferences or arguments. Reasoning is the activity of drawing inferences.
Logical model can refer to: A model in logic, see model theory; In computer science a logical data model This page was last edited on 29 ...