https://archivedoc.lucidworks.com/how-to/3295/
Fetch Items-for-Item Recommendations (Collaborative/BPR Method) | Lucidworks Documentation
In Fusion 5.2 and later, you can download and import a query pipeline that works out of the box with the default BPR Recommender job. There are two separate ...
bpr methodfetchitemsrecommendationscollaborative