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Vol. I · No. 251
Mon · 8 Jun
A Daily Lexicon of Trustworthy Data
The Lexicon

006·335

feature store

/ˈfiːtʃər stɔːr/ - n.

1 [colloq.] A shared shelf where four teams store four columns named 'revenue'.Keep. Punchy.This is the problem.

Working definition

2. A managed repository of curated model inputs with consistent definitions shared across training and serving.

Evidence
See also
  • data for aiStruck: it claims the warehouse already holds the profiling, ownership, rights clearance, and fitness-for-use no one has done.
  • feature leakageThe model knew the answer because the answer was in the question.
  • mlopsThe operating discipline a model needs, requested only after the model is already in production.
  • training dataWhatever was easiest to export, now load-bearing.