A photoreal synthetic evaluation suite for measuring typicality bias / context-dependence in object detection and instance segmentation models. Images are stratified into NPMI-defined tiers running from "fully typical" anchor + co-occurring partners through to "never co-occurring" cliques, so the same anchor classes appear with very different contextual neighbours across tiers.
The set is evaluation-only: it is small by design (a few thousand… See the full description on the dataset page:
https://huggingface.co/datasets/anonymous20261980/anonneurips2026.
