Surrogate Model

Definitions

1. A simpler or cheaper model used to approximate a more expensive process, objective, or system during optimization or experimentation. Surrogate models help teams explore tradeoffs without paying the full cost of the original system every time.

   In plain English: A cheaper stand-in model used to approximate a harder or more expensive system.

   Example: "They used a surrogate model to estimate answer quality during prompt tuning before running the full expensive human-review loop."

Related Terms

• AI Model Registry
• Attention Score
• OpenAI Codex
• Expert Iteration
• Gradient-Free Optimization
• Mesa-Optimization
• Model Optimization
• Reward Engineering
• Weight Merging