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What is a model feedback loop and why is it dangerous?

hard

Answer

  • Model's predictions influence future training data → self-reinforcing.
  • Example: (1) recommender pushes popular items → users click popular → more training signal for popular → runaway effect.
  • (2) hiring algorithm reject certain profile → no future data for that profile.
  • (3) fraud model detects one pattern → attackers shift, but model doesn't learn new pattern from its own denials.
  • Detect via causal reasoning + exposure logs.
  • Fix via exploration / random baseline traffic + counterfactual evaluation + off-policy correction.
Check yourself — multiple choice
  • Random
  • Predictions shape future training data → self-reinforcing (recsys popularity spiral / hiring exclusion / fraud pattern lock-in); fix via exploration + counterfactual + off-policy correction
  • Only positive
  • Not real

Feedback loop: self-reinforcing bias; explore + counterfactual + off-policy fix.

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