4226: Hybrid search r=dureuill a=dureuill
Allows to perform hybrid search requests that combine the results of semantic and keyword search and automatically generate embeddings.
## How to use
See [feature description](https://meilisearch.notion.site/v1-6-Hybrid-Search-Embedders-ea42c82f90cc4bc0be1eeb917c1118c8)
## Changes
- work is based on #4213
- milli::new search now takes an input universe directly, rather than computing it from a filter. This adds flexibility to require results on a subset of documents
- vector search is now a regular ranking rule (akin to sort and geosort) and reports its score as a ScoreDetail
- separate keyword search and vector search functions, vector search now respects (geo)sort ranking rules
- add automatic embedding
- add hybrid search
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
Co-authored-by: ManyTheFish <many@meilisearch.com>
- DistributionShift in Search object (to be set from model in embed?)
- Fix issue where embedder index wasn't computed at search time
- Accept as default embedder either the "default" one, or the only embedder when there is only one
4254: Bring back v1.5.1 changes into main r=ManyTheFish a=Kerollmops
This pull request brings back changes from the _release-v1.5.1_ branch into _main_.
Co-authored-by: ManyTheFish <many@meilisearch.com>
Co-authored-by: meili-bors[bot] <89034592+meili-bors[bot]@users.noreply.github.com>
Co-authored-by: curquiza <curquiza@users.noreply.github.com>
Co-authored-by: Clément Renault <clement@meilisearch.com>
4250: Update version for the next release (v1.5.1) in Cargo.toml r=dureuill a=meili-bot
⚠️ This PR is automatically generated. Check the new version is the expected one and Cargo.lock has been updated before merging.
Co-authored-by: curquiza <curquiza@users.noreply.github.com>
