# incidence matrix

> matrix that shows the relationship between two classes of objects

**Wikidata**: [Q939272](https://www.wikidata.org/wiki/Q939272)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Incidence_matrix)  
**Source**: https://4ort.xyz/entity/incidence-matrix


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)