2 docs tagged with "reproducibility"

Which exact rows produced the model currently serving traffic? For most teams, the honest answer is "we don't know" — the code is in Git, but the data that trained the model has moved on, been updated, or been silently overwritten since. A model is a function of code and data, and versioning only the code reproduces nothing.

Same code, same data, different result. This should be alarming, and it usually traces to one of a small, well-understood set of non-determinism sources — reproducibility is layered, and the right response is deciding which layer actually matters before paying for the strictest possible guarantee.