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Car Dealer Decision Engine

Family dealershipSep 2026 - PresentSole developer

A private deal-ranking system for my family's used-car dealership: it scores listings by expected profit so my father only looks at the ones worth a call.

Car Dealer Decision Engine

Highlights

  • Ridge-regression market-price model plus distance and reconditioning costs
  • The dealer's 20-question buying survey turned into a YAML rules engine with a Turkish free-text parser
  • TypeSafe's Jev decision model for typed judgments on listing text, with a calibration workbench for its confidence thresholds
  • About 290 pytest cases