Apache Solr Lexicographical Order: Possible Unexpected Behaviors
This blog post explores the possible unexpected behaviors that can be encountered with Apache Solr’s lexicographical ordering.
Ilaria Petreti
July 30, 2026
Boosted K-Nearest Neighbor Search
Is it possible to integrate eDisMax-like boosting in Approximate Nearest Neighbor search for Solr and Lucene?
Anna Ruggero
July 22, 2026
Nested Vectors Search in Apache Lucene
When using Lucene’s parent-child block-join mode, you are dealing with a “one-to-many relationship”. You have a single document (parent) owning multiple vector embeddings (children).To search
Anna Ruggero
May 27, 2026
Apache Solr 10 – What Is New for Vector Search and LTR
This blog summarises the main new features introduced in Apache Solr 10.0.0, focusing on Vector Search and Learning to Rank (LTR).
Ilaria Petreti
March 30, 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
Faster Vector Search: Early Termination Strategy Now in Apache Solr
In this blog we explores an early termination strategy designed to make approximate k-NN search faster in Apache Solr.
Ilaria Petreti
December 2, 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
Image Retrieval Using ViT + Generative Pre-trained Transformer (GPT)
Implementation of image retrieval through a textual query using a Vision Transformer and a GPT for image captioning.
SQUID
April 18, 2024
OpenSearch Neural Search Tutorial: How Filtering Works
This blog post is about how Filtering works in OpenSearch, exploring its importance, and how it is handle in vector search.
Ilaria Petreti
March 14, 2024
OpenSearch Neural Search Plugin Tutorial: Additional Useful Tools
The second part of OpenSearch Neural Search Plugin Tutorial for version 2.4.0 where additional tools can be found that might be useful
Ilaria Petreti
January 9, 2024
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.
