Hybrid Search Using a Custom Algorithm in Apache Solr
This blog post explores the Combined Query Feature using a custom algorithm in Apache Solr with a hands-on approach.
Ilaria Petreti
March 9, 2026
Hybrid Search with Reciprocal Rank Fusion in Apache Solr
We explore the Combined Query Feature using Reciprocal Rank Fusion in Apache Solr with a hands-on approach.
Ilaria Petreti
March 3, 2026
Lexically accelerated vector search: SeededKnnVectorQuery Support in Apache Solr 10
In this blog we explores our recent contribution to Apache Solr that introduces support for SeededKnnVectorQuery.
Ilaria Petreti
February 2, 2026
Searching Children, Finding Parents: Nested KNN Vector Search in Solr
New feature coming to Solr v10.x: KNN search on nested vectors via Block Join. KNN Block Join query enables searching across specific child paragraphs and surfacing the most relevant parent documents in a single request.
Nazerke Seidan
January 15, 2026
Binary Quantization of Dense Vectors in Apache Solr
This blog post explores binary vector quantization and the recent Solr contribution which adds support for this technique.
Ilaria Petreti
January 12, 2026
Scalar Quantization of Dense Vectors in Apache Solr
This blog post explores scalar vector quantization and the recent Solr contribution which adds support for this technique.
Ilaria Petreti
January 2, 2026
Semantic Search (Text to Vector) with Apache Solr
Learn all the secrets of the new semantic search in Apache Solr 9.8 that uses LLMs to vectorise text and support natural language queries.
Alessandro Benedetti
July 17, 2025
Why Solr More Like This Ignores Your copyField – How to Deal With It
This blog post explains a workaround implemented in Solr’s CloudMLTQParser to handle fields populated via copyField.
Ilaria Petreti
July 1, 2025
Solr AutoGeneratePhraseQueries and Minimum Should Match with Synonyms
The post discusses the interaction between three Solr parameters: autoGeneratePhraseQueries, synonyms, and minimum should match.
Anna Ruggero
May 26, 2025
How to Use Apache Solr Request Parameters API
How to set and view Apache Solr Request Parameters API. Including real world examples for the Ping functionality.
Anna Ruggero
January 13, 2025
We are Sease, an Information Retrieval Company based in London, focused on providing R&D project guidance and implementation, Search consulting services, Training, and Search solutions using open source software like Apache Lucene/Solr, Elasticsearch, OpenSearch and Vespa.
