Name: OpenSearch Paris Meetup - 17 Juillet 2025 à Courbevoie (FR/EN)
Start: 2025-07-17T17:00:00.000Z
Location: Tour Carpe Diem

We're back with another Search & AI Meetup! The event will start at **6pm sharp** and finish at 8pm, kindly hosted by [Just Eat](https://www.just-eat.co.uk/) who will also provide food and drinks. This will be an in-person event although we hope to record the talks and share the videos later.

Our hosts Just Eat will open with a talk on **Spicing Up Search🌶️ : The Recipe for Relevant Results,** presented by Jessica Cebrian and a colleague.

Our second talk is from Kapil Kumar of [Roku](https://www.roku.com/) on **Improving Search Relevance Using CrossEncoders and LLMs:**
*Search relevance is a critical component of any content discovery system. While traditional semantic retrieval using bi-encoders offers efficient search capabilities, it often suffers from false positives due to its inability to capture complex query-document relationships. Alternatively, Large Language Models (LLMs) can provide superior relevance understanding, but their computational costs and high latency make them impractical for production search systems.*

*This talk explores how we achieved such results by fine-tuning a cross-encoder model, combining the best of both worlds: we demonstrate how our approach maintains the efficiency of semantic retrieval while significantly reducing false positives through cross-attention mechanisms. Through model distillation techniques, we achieved remarkable improvements in search quality. Our results show that cross-encoders can effectively bridge the gap between lightweight but imprecise bi-encoders and powerful LLMs.*

The third talk comes from [Mark Harwood](https://www.linkedin.com/in/elasticmark-harwood), ex-Elastic and an Apache Committer, on **Emergent Facets: Generating Specialized Filters from Search Results:**
*Faceted search typically relies on predefined, indexed fields — product categories, tags — chosen in advance and exposed selectively at query time. But in exploratory domains, the most useful structure may not exist in the index at all.*

*This talk introduces the idea of emergent facets: tailored groupings and labels that are generated after the query, directly from the search results themselves. I’ll show two techniques that enable this: both operate client-side, require no index changes, work with multiple databases and adapt to each new dataset and query. I’ll also show how these facets can be turned into Boolean queries using a graphical query builder — bridging unstructured exploration with structured refinement.*

*The goal is to rethink how structure in search can form: not from what we predefine, but from what we discover.*

We'll also have time for Q&A on all things search and AI and general networking. Set yourselves up for the summer at our friendly and informative Search Meetup, organised by [The Search Juggler](www.thesearchjuggler.com), [OpenSearch](https://opensearch.org/) and [Eliatra](https://eliatra.com/).

Please provide your full name and email address when registering for the event as we will need a list of attendees for security.

London Search & AI User Group

Charlie Hull

Olena Gorbatiuk

Debabrata Mishra

Jordi Mon Companys

Andy Hind

gordon so

Norbert D'souza

Anupam Gupta

John Rodger

Chun Tau

Matt Willsmore

Theo Ventura

Mark Harwood

Emma

Samuel Cox

Nour 

Shim

Omer H Abdelrahman

Soumyajit Ganguly 

Lucas

Spicing up Search, Improve Search with CrossEncoders and LLMs & Emergent Facets

Just Eat

Join the OpenSearch machine learning team for their next backlog & triage planning meeting.

(hosts: Yaliang Wu, Jing Zhang, Dhrubo Saha, Xun Zhang)

**Agenda:**

**Triage issues** *(add the triaged label once reviewed/ready. They can be also labelled as sprint backlog if we are looking to queueing them up next, or good first issue / help wanted when appropriate.)*

* [Backend ml-commons](https://github.com/opensearch-project/ml-commons/issues)
* [Dashboards ml-commons](https://github.com/opensearch-project/ml-commons-dashboards/issues)

**Sprint backlog**\*(Examine if it still reflects the work that we are committing to doing and is it in the right priority order)\*

* [Backend ml-commons](https://github.com/opensearch-project/ml-commons/issues)
* [Dashboards ml-commons](https://github.com/opensearch-project/ml-commons-dashboards/issues)

**Backlog**\*(anything we should move to sprint backlog? anything we should tag asking for help from the community?)\*

* [Backend ml-commons](https://github.com/opensearch-project/ml-commons/issues)
* [Dashboards ml-commons](https://github.com/opensearch-project/ml-commons-dashboards/issues)

**Zoom Meeting**:
https://us02web.zoom.us/j/82164218920

Meeting ID: 821 6421 8920
Passcode: 259735
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Meeting ID: 821 6421 8920
Find your local number: https://us02web.zoom.us/u/kcboT3QOI

*By joining the Development Backlog & Triage Meeting, you grant OpenSearch, and our affiliates the right to record, film, photograph, and capture your voice and image during the Development Backlog & Triage Meeting (the “Recordings”). You grant to us an irrevocable, nonexclusive, perpetual, worldwide, royalty-free right and license to use, reproduce, modify, distribute, and translate, for any purpose, all or any part of the Recordings and Your Materials. For example, we may distribute Recordings or snippets of Recordings via our social media outlets.*

OpenSearch Community & Triage Meetings

Dhrubo Saha

Kris Freedain

Development Backlog & Triage Meeting - Machine Learning

Online event

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://github.com/orgs/opensearch-project/projects/45](https://github.com/orgs/opensearch-project/projects/45)
* New Contributors Can Pick Up Issues Here: [https://github.com/orgs/opensearch-project/projects/45/views/1?filterQuery=label%3A%22g](https://github.com/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://docs.google.com/document/d/1cpGSlQVnzd_J6NoFcBbGf4ykGK31l3h59toZmbxUezw/edit?usp=sharing](https://docs.google.com/document/d/1cpGSlQVnzd_J6NoFcBbGf4ykGK31l3h59toZmbxUezw/edit?usp=sharing)

Join Zoom Meeting
**[https://us02web.zoom.us/j/83461075100](https://us02web.zoom.us/j/83461075100)**
**Meeting ID: 834 6107 5100**
**Passcode: 352301**
\-\-\-
One tap mobile
+16699009128,,83461075100# US (San Jose)
+17193594580,,83461075100# US
\-\-\-
Dial by your location
• +1 669 900 9128 US (San Jose)
• +1 719 359 4580 US
• +1 253 205 0468 US
• +1 253 215 8782 US (Tacoma)
• +1 346 248 7799 US (Houston)
• +1 669 444 9171 US
• +1 360 209 5623 US
• +1 386 347 5053 US
• +1 507 473 4847 US
• +1 564 217 2000 US
• +1 646 558 8656 US (New York)
• +1 646 931 3860 US
• +1 689 278 1000 US
• +1 301 715 8592 US (Washington DC)
• +1 305 224 1968 US
• +1 309 205 3325 US
• +1 312 626 6799 US (Chicago)
• 877 853 5247 US Toll-free
• 888 788 0099 US Toll-free
Meeting ID: 834 6107 5100
Find your local number: [https://us02web.zoom.us/u/kecm4g4G4R](https://us02web.zoom.us/u/kecm4g4G4R)
**Join the meeting**
[https://us02web.zoom.us/j/83461075100](https://us02web.zoom.us/j/83461075100)
Pass code: 352301

Marc Handalian

Michael Froh

Sandesh Kumar

Saurabh Singh

Search Community Meeting - Triage and Backlog Discussion

We're excited to host the **first-ever OpenSearch Project Meetup in Pune** 🎉 — right here at the **Infino AI office on SB Road**!

Whether you're a long-time contributor or just curious about how OpenSearch is evolving (especially with the rise of GenAI), this meetup is a great chance to connect with the local community, learn from experts, and explore how you can get involved.

**Sessions**
**Talk 1: Kickstart Your OpenSearch Journey as a Reviewer and Contributor**
**Speaker: Sakshi Nasha, MTS III, Cohesity**
In this session, we'll explore the world of OpenSearch — what it is, where it came from, and how you can become an active part of its growing community. Sakshi will walk us through the OpenSearch public repositories and how to contribute even as a beginner. She'll share her personal journey, resources that helped her, and tips that she wishes she had known earlier. Whether you're an experienced developer or just getting started, this session will inspire you to take that first step into open source.

**Talk 2: NextGen OpenSearch with Generative AI**
**Speaker: Murali Krishna, Senior Principal Engineer, AWS Search Services**
OpenSearch is evolving rapidly to support the GenAI ecosystem. Murali will walk us through OpenSearch's capabilities as a vector database, its support for Retrieval-Augmented Generation (RAG), and how it integrates with LLMs for better search experiences. He'll also touch upon the latest MCP support and how OpenSearch became the vector store behind Amazon Bedrock Knowledge Base.

**Networking & Open Discussion**
Connect with fellow engineers, developers, and OpenSearch enthusiasts. Whether you want to chat about information retrieval, observability, contributing to open source, or GenAI — this is your time.

*☕️ Drinks and snacks will be provided.*

**Registration Required:** This is a free event, but please RSVP as seats are limited. Walk-ins may not be accommodated.

📅 Date & Time: **Saturday, July 12**, 2025. **10:00 AM** onwards
📍 Venue: **Infino AI Office, SB Road**, Pune

We're looking forward to seeing you there and kicking off the OpenSearch community in Pune!

OpenSearch Project Pune

Naman Modi

Santhosh Sundararaman

Sakshi Nasha

Vinay Kakade

Talib Sayyed

khadijamomin7

meet2mazen

Pranoti Puri

Niraja Guruswami Kurra

Rehan 

Shifa N Khan

iqra mulla

samrudhipawar2104

Sharmeen Shaikh

Tejas Paranjape 

Omkar Tupere

allenjadhav1713

Sanket Mane

musabsayyed200

manasikadu2311

OpenSearch Project Pune First Meetup

Infino AI

Rejoignez-nous pour une soirée technique passionnante sur le Search et l'IA Générative lors du prochain meetup OpenSearch à Paris !

📅 **Date :** **Jeudi 17 juillet 2025**, 19h00 - 21h00

📍 **Lieu :** **Amazon Web Services La Défense**, Tour Carpe Diem, 31 Pl. des Corolles, 92400 Courbevoie, 9eme étage.

**🔐 Important :** **Inscription obligatoire** avec **votre nom complet** sur Meetup pour l'accès à la tour. Presse non autorisée.

**🗓️ Programme :**
18h45 : Accueil des participants
\-\-\-\-\-
19h00 : "**Recherche vectorielle avec OpenSearch : nouveautés, astuces et techniques d'optimisation**"
Dans cette session, nous allons voir comment fonctionne OpenSearch pour le vector search et quelle stratégie utiliser pour optimiser et gagner en performance et réduire la latence. Par **Cédric Pelvet**, **Principal WW SSA OpenSearch** @ AWS (FR)
\-\-\-\-\-
19h40 : "**Unlocking Insights from Multimodal PDFs using OpenSearch and Vision-Language Models**"
PDFs are packed with text, tables, and images, but extracting insights from them isn’t easy. Traditional methods involve multiple components like OCR and task-specific models—making them complex and hard to scale. Vision-Language Models like ColPali simplify this by representing all modalities in a unified format.In this session, you’ll see how ColPali can be combined with OpenSearch to enable conversational search over rich PDF content. We’ll also showcase a live demo to bring this concept to life.
Par **Praveen Mohan Prasad**, **Senior Analytics and AI Specialist** @ AWS (EN)
\-\-\-\-\-
20h20 : **Buffet et Networking**

🌟 Pourquoi participer ?
\- Découvrez les dernières innovations d'OpenSearch 3\.0
\- Apprenez des techniques avancées de recherche vectorielle et de RAG multimodal
\- Échangez avec des experts et des passionnés du domaine
\- Développez votre réseau professionnel autour de l'IA et de la recherche

Ne manquez pas cette opportunité unique d'approfondir vos connaissances en search et IA tout en rencontrant la communauté OpenSearch de Paris !

Places limitées, inscrivez-vous dès maintenant !

À très bientôt !

OpenSearch Project - Paris

Hajer Bouafif

Dustin

Aziz IMGHARNE

NOUNA BDE

Lucian Precup

kais kohila

Raed Haj Gacem

Takoua Khorchani

bensaadi.fairouzz

Mohamed El Gamal

OpenSearch Paris Meetup - 17 Juillet 2025 à Courbevoie (FR/EN)

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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://github.com/opensearch-project/community/blob/main/user-groups/charter-guidelines.md).

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