Other Applications DY0-001 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   In reinforcement learning, what is the role of the 'reward signal'?

   • AIt tells the agent which action to take next
   • BIt initializes the agent's policy
   • CIt defines the structure of the environment
   • DIt provides feedback on the quality of the agent's actions
   Reveal Solution Discussion Select an answer first
2. 7expert · hard

   A pharmaceutical company is studying the spread of a disease through a population. They have data on individual contacts and want to identify the most effective individuals to vaccinate to minimize the spread. Which graph analysis approach is most appropriate?

   • ACompute the betweenness centrality of each node and prioritize vaccinating those with the highest values.
   • BUse community detection to identify clusters and vaccinate one person from each cluster.
   • CApply graph coloring to assign vaccination priorities based on node colors.
   • DFind the shortest path between all pairs of nodes and vaccinate the endpoints.
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   Which signal processing technique is used to transform a time-domain signal into the frequency domain?

   • AInterpolation
   • BFourier Transform
   • CConvolution
   • DNormalization
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5. 9application · medium

   A robotics company is training a robot to navigate a maze. The robot receives a positive reward for reaching the exit and a negative reward for hitting walls. The environment is fully observable, and the robot can take actions (move forward, turn left, turn right). Which reinforcement learning algorithm is most appropriate for this discrete state-action space?

   • AMonte Carlo methods, which estimate value functions from complete episodes.
   • BDeep Q-Networks (DQN), which use neural networks to approximate the Q-function.
   • CPolicy gradient methods, which directly optimize the policy using gradient ascent.
   • DQ-learning, a model-free algorithm that learns the optimal action-value function.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   Which algorithm is specifically designed to detect anomalies by isolating data points?

   • ALinear regression
   • BK-nearest neighbors
   • CApriori algorithm
   • DIsolation Forest
   Reveal Solution Discussion Select an answer first