Question

a): Suppose we have developed the following rules and facts for our system.
Rule 1: If X is an animal then X is living spices
Rule 2: If X is living spices then X is a life form
Rule 3: If X is a life form then X is mortal
Fact: Dog is an animal.
Goal: Is Dog a mortal?

Problem: Using forward chaining, try to conclude that Dog is mortal.

b)The following is the rule set of a simple weather forecast expert system:

Rule 1. IF cyclone THEN clouds
Rule 2. IF anticyclone THEN clear sky
Rule 3. IF pressure is low THEN cyclone
Rule 4. IF pressure is high THEN anticyclone
Rule 5. IF arrow is down THEN pressure is low
Rule 6. IF arrow is up THEN pressure is high

Problem: Use backward chaining to reason about the weather if the working
memory contains the fact: clouds. Show your answer in a table naming the
rules matching the current working memory (conflict set), which rule you
apply, and how the working memory contents changes on the next step after a
rule has fired:

hnt: artificial intelligence question

Answer 1

Step 1:

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