Jev Synthetic

Twelve frozen typed-decision configs from the independent Open-Jev project, publishing controlled and mostly synthetic tasks with probability or ordinal targets: from the 113,568-row default release to the 160,797-row browser and drone expansion. CC0 1.0; English, Chinese and Turkish.

Twelve frozen, mostly synthetic typed-decision configs from the independent Open-Jev project, published as redistributable parquet splits with manifests, raw records and reconstruction instructions; the card states these are not official TypeSafe training data.

Metamorphic coherence benchmark for typed probabilistic decision models: 240 synthetic cases and 2,240 questions checked by 50 probability laws, with released reports for 21 open models and 4 reference models.

8,916 LLM-written items with several typed questions each, following the Jev request shape: 28,661 choice, noul and score decisions across 314 workflows, labelled by averaged model probabilities.

572,000 procedurally generated decision problems where labels are computed exactly from rules in the state: 13 task families, 4–60 options, and difficulty calibrated against Jev 1.13.