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Table of contents :

Reranking is the new frontier!


Table of contents :

Cohere‘s reranking API is indeed a very neat way of improving search quality without downgrading performance.
I’m wondering if it can also improve Cohere‘s own multi-language embedding-based vector search?

There is nowadays many reasons to integrate reranking to existing symbolic and semantic search results.

— Reranking for recommenders like Metarank Labs —
User signals are not the only way to feed recommender systems. For small businesses like WooCommerce or WordPress, semantic reranking is a great alternative to the lack of historical data.

— Reranking for performance boost —
SolR, Elasticsearch, OpenSearch ProjectAlgolia, or Weaviate are super efficient at retrieving documents, thanks to fast BM25 (statistics) or bi-encoder sentence transformer models (semantic).
More efficient algorithms exist, like cross-encoder models, at a performance cost that can only be acceptable when used after the retrieval phase, as a second phase reranker.

— Reranking for hybrid search —
BM25 for accuracy, followed by a reranking for semantic: it looks like a nice combination.

— Reranking for infinite tuning — can go even further with its multi-phase reranking functions that can mix and match pretty much anything that can be calculated: BM25, bi-encoder, cross-encoder, XGBoosts, and others.

WPSOLR + BM25 + bi-encoders + Reranking (soon):

#wpsolr #elasticsearch #solr #opensearch #algolia #vespasearch #woocommerce #wordpress

Related posts ... not powered by WPSOLR 😊

New Vespa global reranking

Vespa’s 2-phase state ranking can now be followed by a (stateless/autoscaling/GPU) global reranking from cross-encoder models