Author’s articles
October 29, 2024
What is semantic reranking and how to use it?
Learn about the trade-offs using semantic reranking in search and RAG pipelines.
September 19, 2024
Evaluating search relevance part 2 - Phi-3 as relevance judge
Using the Phi-3 language model as a relevance judge, with tips & techniques to improve the agreement with human-generated annotation
July 16, 2024
Evaluating search relevance part 1 - The BEIR benchmark
Learn to evaluate your search system in the context of better understanding the BEIR benchmark, with tips & techniques to improve your search evaluation processes.
May 3, 2024
Evaluating scalar quantization in Elasticsearch
Learn how scalar quantization can be used to reduce the memory footprint of vector embeddings in Elasticsearch through an experiment.
April 25, 2024
Understanding Int4 scalar quantization in Lucene
This blog explains how int4 quantization works in Lucene, how it lines up, and the benefits of using int4 quantization.
April 25, 2024
Scalar quantization optimized for vector databases
Optimizing scalar quantization for the vector database use case allows us to achieve significantly better performance for the same retrieval quality at high compression ratios.
March 12, 2024
Speeding Up Multi-graph Vector Search
Explore multi-graph vector search in Lucene and discover how sharing information between segment searches enhances search speed.
December 1, 2023
RAG evaluation metrics: A journey through metrics
Explore RAG evaluation metrics like BLEU score, ROUGE score, PPL, BARTScore, and more. Discover how Elastic is evaluating RAG with UniEval.
October 17, 2023
Improving information retrieval in the Elastic Stack: Improved inference performance with ELSER v2
Learn about the improvements we've made to the inference performance of ELSER v2, achieving a 60% to 120% speed increase over ELSER v1.