Artificial IntelligenceAIMA Exercises

From “Sheep are animals,” it follows that “The head of a sheep is the head of an animal.” Demonstrate that this inference is valid by carrying out the following steps:
1. Translate the premise and the conclusion into the language of first-order logic. Use three predicates: ${HeadOf}(h,x)$ (meaning “$h$ is the head of $x$”), ${Sheep}(x)$, and ${Animal}(x)$.
2. Negate the conclusion, and convert the premise and the negated conclusion into conjunctive normal form.
3. Use resolution to show that the conclusion follows from the premise.

From “Sheep are animals,” it follows that “The head of a sheep is the head of an animal.” Demonstrate that this inference is valid by carrying out the following steps:
1. Translate the premise and the conclusion into the language of first-order logic. Use three predicates: ${HeadOf}(h,x)$ (meaning “$h$ is the head of $x$”), ${Sheep}(x)$, and ${Animal}(x)$.
2. Negate the conclusion, and convert the premise and the negated conclusion into conjunctive normal form.
3. Use resolution to show that the conclusion follows from the premise.

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