Pietro Mele

Pietro Mele

Italian, adopted by France not long ago, I am a constant learner, dedicated to computer science and discovery—whether uncovering solutions or gaining insights.

Speaker at :

– ElasticON 2023 – Searching through large graphs using Elasticsearch
– Devoxx France 2023 – Cloning CHATGPT with ElasticSearch and HuggingFace
– 10th Meetup Search & Data – Construire une API conversationnelle au dessus d’un moteur de recherche
– Haystack US 2023 – Dive into NLP with the Elastic Stack
– VoxxedDays Luxembourg 2023 – Cloner ChatGPT avec Hugging Face et Elasticsearch
– DevoxxMorocco 2023 – Conversational Search – Unleashing the Power of Voice Search, Question Answering, and LLMs
– DevFest Toulouse 2023 – Cloner ChatGPT avec Hugging Face et Elasticsearch
– 11th Meetup Search & Data – Exploration of an Open Source Rag System
– Devoxx France 2024 – Mettre en place un RAG Open Source en 30 minutes
– Devoxx France 2024 – Construire son Assistant Intelligent avec Hugging Face et Elasticsearch
– OpensearchCon EU 2024 – Implementing an open-source RAG with OpenSearch
– VoxxedDays Luxembourg 2024 – Home Assistant sous surveillance
– Devoxx Morocco 2024 – A practical guide about prompt engineering
– 1st OpenSearch France UG – To the discovery of OpenSearch AI superpowers!
– Big Data Europe 2024 – Exploring Large Graphs at the Heart of the French National Audiovisual Institute
-ElasticON 2025 – Billion vectors baby
-Devoxx UK 2025 – Exploring Large Graphs at the Heart of the French National Audiovisual Institute
-OpensearchCon EU 2025 – Monitoring a smart home with Opensearch

Sessions

Hybrid search on hybrid models, at scale

Talk
17. June 2025, 10:00 - 10:40
Kesselhaus
We present an extensible hybrid search solution using Elasticsearch, built on a multi-index architecture and allowing the integration of multiple embedding models. Our approach addresses the challenges of searching a vast and heterogeneous collection, using different chunking granularity and offering an alternative to reciprocal rank fusion.