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NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers

NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge.

What is An Introduction to Artificial Intelligence?

An Introduction to Artificial Intelligence by  IIT Delhi  course introduces the variety of concepts in the field of artificial intelligence. It discusses the philosophy of AI, and how to model a new problem as an AI problem. It describes a variety of models such as search, logic, Bayes nets, and MDPs, which can be used to model a new problem. It also teaches many first algorithms to solve each formulation. The course prepares a student to take a variety of focused, advanced courses in various subfields of AI.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of the average of best 8 assignments out of the total 12 assignments given in the course. Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF THE AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

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NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers 2022:-

Q1. If h1 and h2 are two admissible heuristics, then which of the following are guaranteed to be admissible? 

(A) max(h1,h2)  (B) min(h1,h2) + 1  (C) sqrt(h1*h2)  (D) h1 + h2

Answer:- (A), & (C)

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Q2. Which of the following evaluation functions would emulate the behavior of greedy best-first search? 

(A) f(n) = g(n)  (B) f(n) = h(n)  (C) f(n) = g(n) + h(n)  (D) f(n) = 2h(n)

Answer:- (B) & (D)

Q3. Which of the following graph search algorithms are guaranteed to be complete and optimal? (Assume positive edge costs) 

(A) Breadth-first search  (B) A* with zero heuristic  (C) Uniform Cost Search  (D) A* with admissible heuristic

Answer:- (B) & (C)

Q4. Consider the following directed graph,having A as the starting node and G as the goal node, with edge costs as mentioned, and the heuristic values for the nodes are given as – {h(A)=7, h(B)=6, h(C)=5, h(D)=4, h(E)=3, h(F)=3, h(G)=0}:

NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers

Which of the following options are correct? 

(A) Given heuristic function is not admissible  (B) Given heuristic function is admissible  (C) Given heuristic function is not consistent  (D) Given heuristic function is consistent

Q5. With A as the starting node and G as the goal node, we run the IDA* graph search with depths 1,2,3.. . Assume we stop as soon as the goal node is reached. At what depth will we reach the goal node? (Assume A is at depth 0)

Q6. With A as the starting node and G as the goal node, we run the IDA* graph search with depths 1,2,3.. . Assume we stop as soon as the goal node is reached. What is the optimal path from A to G predicted by IDA*? (Assume A is at depth 0)

Answer:- ADEG

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NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers

Pacman is a famous game in which the agent(Pacman) is controlled by the keyboard keys and the goal is to eat the maximum amount of food whilst avoiding being eaten by ghosts. Consider a version of Pacman in which there are no ghosts at all. In any state, Pacman can move left, right, up, or down with a cost of 1. Assume that Pacman can’t move into a wall. The goal of Pacman is to eat all the food in the maze(in any order). We wish to compute admissible heuristics for this problem by relaxing the domain. Consider the following relaxation: Pacman can now “teleport” from any cell to any other cell with a cost of 1 What is the cost of the optimal solution in the relaxed domain?

(A) Length of the shortest path through all the food in the maze  (B) Maximum of the length of the shortest path to all food items from the current location.  (C) Number of food items in the maze.  (D) None of these

Answer:- (C) Number of food items in the maze. 

Q8. Is the cost of the optimal solution an admissible heuristic in the original domain? Why? 

(A) No  (B) Yes, because all solutions of the relaxed domain are solutions in the original domain  (C) Yes, because all solutions of the original domain are solutions of the relaxed domain.

Answer:- (C) Yes, because all solutions of the original domain are solutions of the relaxed domain 

Q9. Consider the graph below. A is the starting node and B is the goal state. We perform a depth first search branch and bound algorithm (assume zero heuristic) with upper bound cost 6.5. If there are any ties, then the algorithm chooses to expand the lexicographically smaller node. Also, we stop as soon as we reach the goal. What is the first path predicted by the algorithm?

NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers

Answer:- AECB

Q10. Consider the graph below. A is the starting node and B is the goal state. We perform a depth first search branch and bound algorithm (assume zero heuristic) with upper bound cost 6.5. If there are any ties, then the algorithm chooses to expand the lexicographically smaller node. Also, we stop as soon as we reach the goal. Now, suppose I change my upper bound to 7.5. What will be the path predicted in this case?

Answer:- AB

Q11. Are these true or false?

(i). All admissible heuristics are consistent. (ii). All consistent heuristics are admissible. 

(A) False, False  (B) False, True  (C) True, False  (D) True, True

Answer:- (B) False, True 

Q12. Which of the following will return an optimal solution in case the search graph has negative edge-costs? 

(A) Uniform cost search  (B) Graph search A* with consistent heuristic  (C) Both of these  (D) None of these

Answer:- (D) None of these

Q13. Consider the graph shown below and answer the next three questions based on it. In the graph, all nodes represent a state. A is the start state, and G is the goal state. The value of the heuristic function for each node is mentioned alongside. For example, the value of the heuristic at E is 1, and at C is 4, etc. Similarly the cost of transitioning from a state to another state is mentioned on the edges. For example, the cost of transitioning from B to D is 3 points.

NPTEL An Introduction to Artificial Intelligence Assignment 3 Answers

Write down the order of nodes visited by A* graph search algorithm?

(A) A, C, D, E, G  (B) A, B, C, D, F, E, G  (C) A, B, D, F, C, E, G  (D) A, B, D, F, E, G

Answer:- (C) A, B, D, F, C, E, G 

Disclaimer :- We do not claim 100% surety of solutions, these solutions are based on our sole expertise, and by using posting these answers we are simply looking to help students as a reference, so we urge do your assignment on your own.

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Programming in Java Nptel Week 3 Assignment Answers

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These are Programming in Java Nptel Week 3 Assignment Answers

Programming in Java Nptel Week 3 Assignment Answers (July-Dec 2024)

Q1.What will be the output of the following program?

a. Static Method b. Throws a NullPointerException c. Compile-time error d. Run time error

Answer: a. Static Method

Q2.What will be the output of the below program.

a. value of a = 20 b. error: cannot assign a value to final variable ‘a’ c. error: unknown variable ‘a’ in class subDemoClass d. value of a = 40

Answer: b. error: cannot assign a value to final variable ‘a’

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These are Programming in Java Nptel Week 3 Assignment Answers

Q3.All the variables of interface should be? a. default and final b. default and static c. public, static and final d. protect, static and final

Answer: c. public, static and final

Q4.What will be the output of the below program

a. 7 7.4 b. 6 6.4 c. 7 9 d. 9 7

Answer: c. 7 9

Q5.What will be the output of the following Java code?

a. 2 3 b. 3 3 c. Runtime Error d. Compilation Error

Answer: b. 3 3

Q6. If a variable of primitive datatype in Java is declared as final, then a. It cannot get inherited b. Its value cannot be changed c. It cannot be accessed in the subclass d. All of the above

Answer: b. Its value cannot be changed

Q7. Members which are not intended to be inherited are declared as a. Public members b. Protected members c. Private members d. Private or Protected members

Answer: c. Private members

Q8. If a base class is inherited in protected access mode then which among the following is true? a. Public and Protected members of base class becomes protected members of derived class b. Only protected members become protected members of derived class c. Private, Protected and Public all members of base, become private of derived class d. Only private members of base, become private of derived class

Answer: a. Public and Protected members of base class becomes protected members of derived class

Q9. Which type of inheritance leads to diamond problem? a. Single level b. Multi-level c. Multiple d. Hierarchical

Answer: c. Multiple

Q10.What will be the output of the below program:

a. error: func() in subDemoClass cannot override func() in superDemoClass b. value of b = 60 c. value of a = 20 d. None of the above

Answer: a. error: func() in subDemoClass cannot override func() in superDemoClass

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Programming in Java Nptel Week 3 Assignment Answers (Jan-Apr 2024 )

Course name: Programming In Java

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Q1. Which of the following statement is true regarding the order of execution of constructors in an inheritance hierarchy? a. Base class constructor will be called followed by the derived class constructor. b. Derived class constructor will be called followed by the base class constructor. c. Only Base class constructor will be called. d. Only derived class constructor will be called.

Answer: a. Base class constructor will be called followed by the derived class constructor.

Q2. The super() method is used to: a. Call constructor of friend class b. Is a declared method c. Call constructor of the parent class d. Call constructor

Answer: c. Call constructor of the parent class

Q3. What will be the output of the following Java program? a. 0 b. 1 c. 2 d. Compilation Error

Answer: c. 2

Q4. In Java, is it possible to override a static method? a. Yes, we can override a static method just like we do with instance methods. b. No, static methods cannot be overridden because they belong to the class, not the object. c. It depends on whether the static method is declared as final or not. d. It depends on the access modifier of the static method.

Answer: b. No, static methods cannot be overridden because they belong to the class, not the object.

Q5. What is the output of the following Java program? a. “The vehicle moves” b. “The car moves” c. The code does not compile d. None of the above

Answer: b. “The car moves”

Q6. What is the output of the below Java program with inheritance? a. Sweet=$10 Sugar=$20 b. Sweet=$10 Sugar=$10 c. Sweet=$20 Sugar=$20 d. Compiler error

Answer: a. Sweet=$10 Sugar=$20

Q7. What is the purpose of method hiding in Java inheritance? a. To prevent a subclass from inheriting methods b. To override superclass methods with new implementations c. To expose private methods of the superclass d. To define methods with the same name in both the superclass and subclass

Answer: d. To define methods with the same name in both the superclass and subclass

Q8. What is the output of the following Java program? a. “parent from parent” b. “child from child” c. “parent from child” d. “child from parent”

Answer: c. “parent from child”

Q9. Can a class be marked as both “final” and “abstract” in Java? a. Yes, but only if it has no methods. b. Yes, a class can be marked as both “final” and “abstract.” c. No, a class cannot be both “final” and “abstract.” d. Yes, but only if it is marked as “protected.”

Answer: c. No, a class cannot be both “final” and “abstract.”

Q10. In Java, is it possible to override a static method? a. Yes, we can override a static method just like we do with instance methods. b. No, static methods cannot be overridden because they belong to the class, not the object. c. It depends on whether the static method is declared as final or not. d. It depends on the access modifier of the static method.

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Programming in Java Nptel Week 3 Assignment Answers (July-Dec 2023 )

Course Name: Programming In Java

Programming Assignment

Question 1 This program is related to the generation of Fibonacci numbers. For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8th Fibonacci number. A partial code is given and you have to complete the code as per the instruction given .

Question 2 Define a class Point with two fields x and y each of type double. Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double.

Question 3 A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

Question 4 This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum( ) and multiply ( ). You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.

Question 5 Complete the code segment to swap two numbers using call by object reference.

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Programming in Java Nptel Week 3 Assignment Answers (Jan-Apr 2023 )

Course Name: Programming in Java

Q1. Which of the following statement(s) is/are correct about the constructor? a. Constructors cannot be synchronized in Java. b. Java does not provide a default copy constructor. c. A constructor cannot be overloaded. d. “this” or “super” can be used in a constructor.

Answer: a, b, d

Q2. Which of the following statement(s) is/are true? a. You can write a new instance method in the subclass with the same signature as the one in the superclass, thus overriding it. b. You can write a new static method in the subclass with the same signature as the one in the superclass, thus hiding it. c. A subclass inherits all of its parent’s public and protected members, no matter what package the subclass is in. d. You cannot declare new methods in the subclass that are not in the superclass.

Answer: a, b, c

Q3. Consider the following piece of code. Fill in the blank with the appropriate keyword(s) from the list given below so that the program compiles successfully. a. abstract b. final c. default d. public

Answer: b, d

Q4. How many instances of abstract class can be created? a. 0 b. 1 c. 2 d. Multiple

Answer: a. 0

Q5. Structuring a Java class such that only methods within the class can access its instance variables is referred to as ______. a. object orientation b. inheritance c. platform independence d. encapsulation

Answer: d. encapsulation

Q6. Which of the following statement(s) is/are true? a. A final method cannot be overridden in a subclass. b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c. Class methods cannot use this keyword as there is no instance for this to refer to. d. A final method can be overridden in a subclass.

Q7. Consider the following piece of code. Which of the following is the output of the above program? a. Java b. There will be a compile-time error. c. JavaJava. d. The program will give a runtime error.

Answer: b. There will be a compile-time error.

Q9. Consider the following program. What is the output of the above program? a. java b. ring c. r min d. gram

Answer: b. ring

Q9. Which of the following statement(s) is/are False? a. Hiding internal data from the outside world and accessing it only through publicly exposed methods is known as data encapsulation. b. Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword. c. The term “class variable” is another name for a non-static field. d. A local variable stores a temporary state; it is declared inside a method.

Answer: c. The term “class variable” is another name for a non-static field.

Q10. Which of the following statement(s) is/are true? a. Static methods in interfaces are never inherited. b. You will get a compile-time error if you attempt to change an instance method in the superclass to a static method in the subclass. c. You can prevent a class from being subclassed by using the final keyword in the class’s declaration. d. An abstract class can only be subclassed; it cannot be instantiated.

Answer: a, b, c, d

Programming Assignment Solution

Define a class Point with two fields x and y each of type double. Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double. Complete the code segment given below. Use Math.sqrt( ) to calculate the square root.

This program to exercise the call of static and non-static methods. A partial code is given defining two methods, namely sum( ) and multiply ( ). You have to call these methods to find the sum and product of two numbers. Complete the code segment as instructed.

Complete the code segment to swap two numbers using call by object reference.

This program is related to the generation of Fibonacci numbers.> For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8 th  Fibonacci number. A partial code is given and you have to complete the code as per the instruction given .

A class Shape is defined with two overloading constructors in it. Another class Test1 is partially defined which inherits the class Shape. The class Test1 should include two overloading constructors as appropriate for some object instantiation shown in main() method. You should define the constructors using the super class constructors. Also, override the method calculate( ) in Test1 to calculate the volume of a Shape.

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Programming in Java Nptel Week 3 Assignment Answers (July-Dec 2022 )

Course Name: Programming in Java NPTEL

Q1. Which of this keyword can be used in a sub class to call the constructor of super class? a. super b. this c. extent d. extends

Answer: a. super

Q2. What is the output of the above program? a. i+jis 42 4 b. i+jis6 9 2 c. i+jis 42 9 2 d. i+jis 6 4

Answer: a. i+jis 42 4

Q3. What is the output of the above program? a. 4 b. 10 c. 2 d. runtime error

Q4. For each description on the left, find the best matching modifier on the right. You may use a choice more than once or not at all.

a. 1-A, 2-A, 3-C, 4-D, 5-E b. 1-A, 2-A, 3-A, 4-B, 5-C c. 1-C, 2-B, 3-A, 4-A, 5-D d. None of Above

Answer: b. 1-A, 2-A, 3-A, 4-B, 5-C

Q5. All the variables of interface should be? a) default and final b) default and static c) public, static and final d) protect, static and final

Answer: c) public, static and final

Q6. Which of the following statement(s) is/are NOT true? a. A final method cannot be overridden in a subclass. b. The advantage of private static methods is that they can be reused later if you need to reinitialize the class variable. c. Class methods cannot use this keyword as there is no instance for this to refer to. d. A final method can be overidden in a subclass.

Answer: d. A final method can be overidden in a subclass.

Q7. Which of the following statements is/ are true? a. Hello b. There will be a compile-time error c. HelloHello. d. The program will give a runtime error.

Answer: d. The program will give a runtime error.

Q8. Which of the following option is true about the above program? a. Eror: String cannot be a method return tpe like void, int, char, etc.; as it isa class. b. Eror: Non-static variable ‘answer’ cannot be referenced from a static context. c. Output: The answer to the question, Which course have you opted? is Programming with Java d. Error: Compilation error as variable question’ is not static.

Answer: c. Output: The answer to the question, Which course have you opted? is Programming with Java

Q9. Disadvantage(s) of inheritance in Java programming is/are

a. Code readability b. two classes (base and inherited class) get tightly coupled c. Save development time and effort d. Code reusability

Answer: b. two classes (base and inherited class) get tightly coupled

Q10. Which inheritance in Java programming is not supported? a. Multiple inheritance using classes. b. Multiple inheritance using interfaces. c. Multilevel inheritance. d. Single inheritance.

Answer:  a. Multiple inheritance using classes.

Programming Assignment Solutions

This program is related to the generation of Fibonacci numbers.   For example: 0,1, 1,2, 3,5, 8, 13,… is a Fibonacci sequence where 13 is the 8 th  Fibonacci number.   A partial code is given and you have to complete the code as per the instruction given below.

Define a class Point with two fields x and y each of type double. Also, define a method distance(Point p1, Point p2) to calculate the distance between points p1 and p2 and return the value in double.

Programming in Java Nptel Week 2 Assignment Answers

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  23. An Introduction to Artificial Intelligence NPTEL SWAYAM Week 3

    For Nptel Fans

Course Status : Completed
Course Type : Elective
Duration : 12 weeks
Category :
Credit Points : 3
Undergraduate
Start Date : 22 Jan 2024
End Date : 12 Apr 2024
Enrollment Ends : 05 Feb 2024
Exam Registration Ends : 16 Feb 2024
Exam Date : 20 Apr 2024 IST