I recently wrote an essay about this search engine, and its ranking algorithms.
Initially Marginalia used an interesting variant of PageRank discussed in the original paper, called Personal Pagerank.[1] Currently pages are ranked with BM25.
I think Personalized PageRank is still used for a new feature of Marginalia which is ranking pages based on similarity. I think this is already integrated into the website but there used to only be this testing page:
https://explore2.marginalia.nu/
In any case I have a lot of respect for the creator. Marginalia has seen a lot of growth and it's been interesting reading the blogposts.[2]
Initially Marginalia used an interesting variant of PageRank discussed in the original paper, called Personal Pagerank.[1] Currently pages are ranked with BM25.
I think Personalized PageRank is still used for a new feature of Marginalia which is ranking pages based on similarity. I think this is already integrated into the website but there used to only be this testing page: https://explore2.marginalia.nu/
In any case I have a lot of respect for the creator. Marginalia has seen a lot of growth and it's been interesting reading the blogposts.[2]
[1]: https://www.marginalia.nu/log/26-personalized-pagerank/ [2]: https://www.marginalia.nu/log/