Question

1 point

__________ provides ways and means of weighing up the desirability of goals and the likelihood of achieving them.

A. Decision Theory

B. Utility Theory

C. Probability Theory

D. Bayesian Networks 

1 point

Probability provides a way of summarizing the ___________ that comes from our laziness and ignorance.

A. Joint probability distributions

B. Randomness

C. Belief

D. Uncertainty

1 point

Causal chains (For example: Smoking causes cancer, which causes dyspnea) give rise to ___________________.

A. Conditionally dependence

B. Conditionally independence

C. Both of above

D. None of above

1 point

If every undirected path from a node in X to a node in Y is d-separated by E, then X and Y are _______________ given E

A. Dependent

B. Conditionally dependent

C. Conditionally independent

D. Independent

1 point

Bayesian networks allow compact specification of _____________

A. Joint probability distributions

B. Propositional Logic statements

C. Belief

D. Conditional independence

1 point

Bayes rule can be used to ________ conditioned on one piece of evidence.

A. Solve queries

B. Increase complexity of a query

C. Decrease complexity of a query

D. Answer probabilistic queries


For Q7. – Q10. Imagine you have a party on Sunday and an exam on Monday. Too much food on Sunday could lead to lack of concentration on Monday, which would reduce the probability that you pass the exam. Another consequence of reduced concentration could be stress with your roommate as you forgot to clear the room after dinner! Lack of concentration could also be due to allergy you have after some type of food. 

Consider the following random variable that can be either True or False. 

A: Too much food on Sunday; B: Allergy strikes; C: Reduced concentration on Monday; D: You pass the exam; and E: Stress with your roommate. 

The corresponding Bayesian Network is shown below


Given the above network, state whether the following statements are True or False

1 point

A and B are conditionally dependent if C or any of its descendants i.e., D or E, have received evidence.

True

False

1 point

E is conditionally independent of A, B and D if C is not instantiated.

True

False

1 point

D is conditionally independent of A, B and E if C is instantiated

True

False

1 point

D and E are conditionally dependent if C is not instantiated.

True

False


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Answer 1

Answer:

1 . Utility Theory

2 . Belief