On Answer Substitutions in Logic Programming

Keehang Kwon

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arXiv · 1708.05240

On Answer Substitutions in Logic Programming

Keehang Kwon

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Abstract

Answer substitutions play a central role in logic programming. To support {\it selective} answer substitutions, we refine $\exists x$ in goals into two different versions: the noisy version $\exists^o x$ and the silent version $\exists x$. The main difference is that only the instantiation in $\exists^o x$ will be recorded in the answer substitutions. Similarly for $\forall x$. In addition, we discuss the notion of don't-care constants and don't-know constants.

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Keehang Kwon. 2017-08-17. On Answer Substitutions in Logic Programming. https://arxiv.org/abs/1708.05240

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