TP

Thanos Papaoikonomou

Senior ML Engineer

Author’s articles

What is semantic reranking and how to use it?

What is semantic reranking and how to use it?

Learn about the trade-offs using semantic reranking in search and RAG pipelines.

Evaluating search relevance part 2 - Phi-3 as relevance judge

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

Evaluating search relevance part 1 - The BEIR benchmark

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.

Evaluating scalar quantization in Elasticsearch

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.

RAG evaluation metrics: A journey through metrics

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.

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