Kathleen DeRusso

Kathleen DeRusso

Principal Software Engineer I

Kathleen is a software engineer at Elastic working on search and search relevance.

Articles by Kathleen DeRusso

All about those chunks, ’bout those chunks, and snippets!

Exploring chunking and snippet extraction for LLMs, highlighting enhancements for identifying the most relevant chunks and snippets to send to models such as rerankers and LLMs.

Kathleen DeRusso

Semantic text is all that and a bag of (BBQ) chips! With configurable chunking settings and index options

Semantic text search is now customizable, with support for customizable chunking settings and index options to customize vector quantization, making semantic_text more powerful for expert use cases.

Kathleen DeRusso

Elasticsesarch semantic search, leveled up: now with native match, knn and sparse_vector support

Semantic text search becomes even more powerful, with native support for match, knn and sparse_vector queries. This allows us to keep the simplicity of the semantic query while offering the flexibility of the Elasticsearch query DSL.

Kathleen DeRusso

Query rules retriever: ensuring business rules work seamlessly with semantic search

Harness the power of Elasticsearch query rules combined with semantic search and rerankeras.

Kathleen DeRusso

Looking back: Elastic's vector search improvements in Elasticsearch & Lucene

Looking back at Elastic's vector search innovations in Elasticsearch and Lucene.

Kathleen DeRusso

Elasticsearch query rules are now generally available

Introducing the general availability of query rules

Kathleen DeRusso

The sparse vector query: Searching sparse vectors with inference or precomputed query vectors

Learn about the Elasticsearch sparse vector query, how it works, and how to effectively use it.

Kathleen DeRusso

Search relevance tuning: Balancing keyword and semantic search

This blog offers practical strategies for tuning search relevance that can be complementary to semantic search.

Kathleen DeRusso

Improving text expansion performance using token pruning

Learn about token pruning and how it boosts the performance of text expansion queries by making them more efficient without sacrificing recall.

Kathleen DeRusso

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