Test Harness
The infrastructure that runs models on eval examples, computes metrics, and reports results—automating the evaluation pipeline.
Think of it like
Like a testing framework in software engineering that runs test cases automatically.
Example
Your test harness loads 1000 examples, runs them through the model, computes BLEU/ROUGE/human scores, and outputs a report.
How it actually works
A good test harness is reproducible, versioned, and fast. It lets you swap models easily and track regressions. Essential for continuous evaluation. Investment in test harness infrastructure pays off quickly.
For product teams
A solid test harness is force-multiplier. It lets small teams evaluate many model changes.
For engineers
Build once, use often. Automate metrics computation, logging, and report generation.
Related
- Eval Set — What it runs.
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