seokwon99/Multi3IR-mteb

Multi³IR-Bench (MTEB format)

The 1.0K test split of seokwon99/Multi3IR in the MTEB retrieval layout. Queries are open-ended Stack Exchange questions; the corpus mixes C4 passages (text, image null) and web images (image as JPEG with longest side ≤ 512, text empty).

config	rows	columns
corpus	1,012,049 (631,377 text + 380,672 image)	id, text, image
queries	1,039	id, text
default (qrels)	12,629	query-id, corpus-id, score = number of the query's perspectives the document supports
perspectives	12,717	query-id, corpus-id, perspective — gold documents per perspective, for hard coverage HC@k

Main score: HC@10, the fraction of a query's perspectives with at least one gold document in the top 10.

@article{song2026multi3ir,
  title={MULTI3IR: A Benchmark for Multi-perspective Multi-domain Multi-modal Information Retrieval},
  author={Song, Seokwon and Kim, Sohyeon and Kim, Gunhee},
  journal={arXiv preprint arXiv:2608.30949},
  year={2026}
}