Hello learners In this article we are going to discuss NPTEL Artificial Intelligence Knowledge Representation And Reasoning Assignment 2 Answers. All the Answers provided below to help the students as a reference, You must submit your assignment with your own knowledge and use this article as reference only.
About the course:-
An intelligent agent needs to be able to solve problems in its world. The ability to create representations of the domain of interest and reason with these representations is a key to intelligence. In this course we explore a variety of representation formalisms and the associated algorithms for reasoning. We start with a simple language of propositions, and move on to first order logic, and then to representations for reasoning about action, change, situations, and about other agents in incomplete information situations.
NPTEL Artificial Intelligence Knowledge Representation And Reasoning Assignment 2 Answers 2024:
1. A sentence in logic is a statement that, in principle, has a truth value. Which of the following are sentences in logic?
Answer :- b
2. State true or false. Induction and Abduction are used in day to day situations because both together provide a sound inference method.
Answer :- a
3. What does the statement (P ⊃ Q) convey? (Note: it is very very important for beginners to understand and internalise the conditional-statement.)
Answer :- a
4. Model the situation “a number x that is greater than 10 is greater than 5 as well” in Propositional Logic. (Hint: select the formula that remains meaningful for various values of x.)
A: number x is greater than 5.
B: number x is greater than 10.
Answer :- c
5. Model the sentence “Snapdragons bloom only in winter” in Propositional Logic.
B: Snapdragons are in bloom.
W: It is winter.
Answer :- c
6. Select the valid rules of substitution.
Answer :- a
7. Select the valid rules of inference.
Answer :- a
8. A knowledge base (KB) is __________ .
Answer :- d
9. A proof or derivation in logic __________ .
Answer :- b
10. What does it mean to say that a KB entails P, which is written as (KB ⊨ P), in Propositional Logic?
Answer :- c
11. Which of the following statements about entailments are correct?
Answer:-a
12. Which of the following sets of connectives are complete in propositional logic?
Answer:-d
13. What does (KB ⊢ P) mean?
Answer:-c
14. If a proof procedure (derivation algorithm) in logic is complete then _ and _ . Choose the relevant two options to fill in the blank
Answer:-b,c
15. If a proof procedure (derivation algorithm) in logic is sound then __________ and __________ . Choose the relevant two options to fill in the blanks.
Answer:-a,d
16. A tautological formula in propositional logic __________ .
Answer:-b
17. Is the following argument valid?
He must sow wheat or he must plant sugarcane.
He planted sugarcane.
Therefore, he did not sow wheat.
Answer:-a
18. Is the following argument valid?
Rain brings happiness to farmers.
It is raining.
Therefore, farmers are happy.
Answer:- b
19. Is the following argument valid?
Bountiful harvest brings happiness to farmers.
Farmers are happy.
Therefore, the harvest was bountiful.
Answer:-b
20. Is the following argument valid?
High demand for wheat brings happiness to farmers.
Farmers are unhappy.
Therefore, demand for wheat is low.
Answer:-a
