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Model other agents in simulation

TeslaMachine Learning Engineer · Technical Screen
HardMachine Learning EngineerTechnical ScreenML System Design

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This question evaluates a candidate's competency in modeling other agents within simulation environments, focusing on designing agent behavior models and assessing their impact on training and evaluation robustness.

Scenario

You are building a driving simulation environment for training/evaluating an autonomous agent (planning or RL). Besides the ego vehicle, the simulator must include other traffic participants (“agents”) such as cars, pedestrians, cyclists.

Question

  1. How would you model the behavior of other agents in simulation so that ego training is realistic and robust?
  2. What are the main approaches (e.g., log replay, rule-based, learned policies), and what are the tradeoffs in realism, controllability, safety, and distribution shift?
  3. How would you validate that your agent-modeling strategy is “good enough” for downstream training and evaluation?