Artificial Intelligence Artificial Intelligence 2

Question 1

Which search algorithm is guaranteed to find the optimal solution when using an admissible heuristic?

Accepted Answer

A* search

Answer

A* search is optimal when its heuristic never overestimates the true cost to the goal.

Question 2

In machine learning, what problem occurs when a model performs well on training data but poorly on unseen data?

Accepted Answer

Overfitting

Answer

Overfitting means the model memorized training-specific noise instead of learning generalizable patterns.

Question 3

Which component of an expert system contains the domain-specific facts and rules?

Accepted Answer

Knowledge base

Answer

The knowledge base stores the facts and if-then rules that the inference engine reasons over.

Question 4

What does the activation function in a neural network primarily provide?

Accepted Answer

Non-linearity

Answer

Activation functions like ReLU introduce non-linearity, letting networks model complex relationships.

Question 5

In reinforcement learning, what does the agent receive from the environment after taking an action?

Accepted Answer

A reward signal and new state

Answer

The environment returns a reward and the next state, which the agent uses to improve its policy.

Artificial Intelligence Practice Test