Vespa
An open-source engine for large-scale search and recommendation. It supports multi-phase ranking architectures, including first-phase, second-phase, and global ranking, as well as arbitrary mathematical ranking expressions.
Timeline (last 90 days)
Vespa explicitly supports first-phase, second-phase and global ranking, letting expensive models run only on the strongest candidate set.
Vespa directly supports XGBoost and LightGBM in the ranking pipeline, including using a cheap first-stage scorer and running the boosted model only on the strongest candidates.
All Facts (2)
Vespa explicitly supports first-phase, second-phase and global ranking, letting expensive models run only on the strongest candidate set.
50%UnverifiedVespa directly supports XGBoost and LightGBM in the ranking pipeline, including using a cheap first-stage scorer and running the boosted model only on the strongest candidates.
50%