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Jev Can't Be Calibrated

3 hours ago
  • Jev is TypeSafe's System One Model that returns typed decisions with probabilities instead of generating text, useful without training data.
  • Jev's calibration claim is questioned because calibration depends on the data distribution, and Jev provides the same probabilities to different datasets.
  • Evidence shows Jev can produce miscalibrated probabilities, e.g., predicting 0.92 for a fair coin, and experiments find other models better calibrated.
  • To get calibrated probabilities, users should recalibrate Jev on their own data using methods like Platt scaling with a few hundred labeled examples.
  • It's recommended to treat Jev's outputs as scores (good for ranking) rather than true probabilities, especially when exact numbers matter.