These are fun algorithms. I’ve found that some of my experiments in writing efficient linear algebra routines end up with exactly the same interfaces you’d want for implementing these algorithms
Interesting. I think there are groups that does quite interesting work on linear algebra that intersects with wcoj algorithms: This keynote abstract should give some pointers on this group's work: https://www.vldb.org/pvldb/vol13/p3502-olteanu.pdf.