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ByteDance Douyin AI Infra

Real ByteDance AI Infra interview questions covering AI Infra

Fundamentals

  1. What common fixes exist for overfitting? How do L1 and L2 regularization differ? What is the derivative form of L2 regularization?
  2. How does Dropout behave differently in training vs inference?
  3. What common optimizers exist? Explain their principles in detail.
  4. What common feature-selection methods exist?
  5. What common ML models exist? Compare tree models and linear models.

Scenario question

  1. How would you design a system to detect fake-like / brush-like behavior on Douyin?

Project experience

  1. Introduce your project experience.

Coding

  1. Implement non-recursive inorder traversal of a binary tree.