Classical Piano
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Classical Piano Events This Week
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OpenSearch Tokyo meetup #1
Welcome to OpenSearch Tokyo User Group !
OpenSearch Tokyo User Groupの第一回 ミートアップイベントを開催します!
OpenSearch は検索やObservabilityのワークロードのためのOSSです。
本イベントでは、第一回イベントということで、OpenSearchプロジェクトの概要やOSSの今後のロードマップ、OpenSearchのユーザからの体験話などをご紹介します。
扱わないトピック : AWSなどのベンダーサービス固有の話
イベント概要
日時: 2026年2月5日 (木) 18:30 開場 19:00-21:00 セッション
21:00〜懇親会 (22:00完全退館)
イベント会場
Amazon Web Service Japan オフィス : 東京都品川区上大崎3-1-1 目黒セントラルスクエア21F (room number 21.001)
https://maps.app.goo.gl/c1Zr7ff9kndRe2fGA
タイムテーブル
1\. OpenSearch プロジェクト最新情報
2.ユーザーセッション① : 弥生株式会社 Kazuma Imaizumiさん
* タイトル : OpenSearch Warm Tier設計の実践 - UltraWarm経験から学ぶIndex/Shard最適化
* 概要 : OpenSearchでのUltraWarm導入経験をもとに、OSS環境でも活用できるWarm Tier設計の実践的ノウハウを共有します。ISM(Index State Management)、Index、Shardの基本概念から、シャードサイズ設計のベストプラクティスと実運用での最適化、UltraWarmとWarm Tierで共通する設計考慮事項まで、具体的な設定例とともに解説します。実運用データ(週1TB、1,000以上のシャード、1シャード約100GB)での経験をもとに、理想と現実のギャップを踏まえた時系列データの効率的な管理とコスト最適化を目指す技術者向けの内容です。
3.ユーザーセッション② : Serverless Operations, Inc. Sonu Kimさん
* タイトル : 「うまく言えない」検索を叶える ― OpenSearchと生成AIで作る類似プロジェクト検索
* 概要 : 「前に似たような案件があったはずだけど、どう検索すればいいか分からない」といった、うまく言語化できない検索が必要な業務があります。本セッションでは、OpenSearch を活用して類似プロジェクトを検索できる仕組みを構築し、業務に合わせて「何をどの程度似ていると判断するか」を柔軟にチューニングできる検索体験を実現した取り組みについてお話します。 また、あいまいな検索条件でもユーザーが求める情報に辿り着けるよう、生成AIを用いてデータを前処理・構造化するアプローチや、検索精度を高めるための工夫についても合わせてお伝えします。
4.ユーザーセッション③ : 株式会社ラクス Nobuhiro Inaguma さん
* タイトル : VectorDBとしてのOpenSearch\~5,000万件超のベクトル検索をコストを抑えて運用する技術選定\~
* 概要 : 全文検索・分析基盤として知られるOpenSearchは、実は大規模なベクトル検索にも活用できます。本セッションでは、5,000万件超のベクトルを対象に、ベクトルDB導入時に課題になりがちなメモリコストの増加を、Disk-based vector searchの活用で抑えた事例をご紹介します。
懇親会について
セッション終了後、簡単な軽食とドリンクをご用意する予定です。
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OpenSearch Tokyo User Groupについて
OpenSearch Project Tokyo ユーザーグループは、OpenSearch ユーザーを中心としたコミュニティです。オープンソース版の OpenSearch、各種マネージドサービス上で実行されている OpenSearch エンジンをご利用の方は是非ご参加ください。ユースケースは検索に限定されません。分析、可視化など、OpenSearch がカバーするあらゆるトピックについて情報・意見交換していきましょう。
Welcome to the OpenSearch Tokyo User Group!
We are hosting the first meetup event of the OpenSearch Tokyo User Group!
OpenSearch is an open-source software for search and observability workloads.
At this inaugural event, we will be introducing the overview of the OpenSearch project, the roadmap for the open-source software, as well as experiences shared by OpenSearch users.
Topics we will not cover: Specific topics related top services provided by vendors like AWS.
Event Details
Date & Time: Thu,Feb,5 2026
\- 6:30 PM Doors open
\- 7:00 PM \- 9:00 PM Sessions
\- 9:00 PM \- 10:00 PM Networking \(complete departure by 10 PM\)
Venue
Amazon Web Services Japan Office: Meguro Central Square, \*-\*-\*, Kamiosaki, Shinagawa-ku, Tokyo 21F (room number 21.001)
https://maps.app.goo.gl/c1Zr7ff9kndRe2fGA
Agenda
TBD
Networking
After the sessions, we will provide light refreshments and drinks.
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About the OpenSearch Tokyo User Group
The OpenSearch Project Tokyo User Group is a community centered around OpenSearch users. If you are using the open-source version of OpenSearch or the OpenSearch engine running on managed services, please join us. The use cases are not limited to just search - we will also discuss topics around analytics, visualization, and any other areas that OpenSearch covers.
Ukulele Club
Ukulele Club is a fun group for all ages and skill levels! There is no teacher, but we all help teach each other. Think of songs you would like to learn, and we can learn them together.
If you don't have an ukulele, we have extra ukuleles
When: *almost* Every Saturday, 10am-11:30am
Admission: food/drink order
Classical Piano Events Near You
Connect with your local Classical Piano community
Join Our FREE Beginner Class!
Hey! I’m Ron K, and I’m excited to welcome you to Neighborhood Boxing Club. Kickstart your fitness journey with a FREE Beginner Class
**Class Schedule**
****
**12:30 - 1:00 PM**
**Hand Wrapping & Basics Tutorial**
**We’ll start with a step-by-step tutorial on wrapping your hands, followed by tips on stance, footwork, and striking to get you feeling confident.**
**1:00 - 1:30 PM**
**Beginner Boxing Class**
**Dive into a high-energy, 30-minute workout on the heavy bags, where you can practice your moves, release stress, and enjoy a great workout.**
**1:30 PM**
**Q&A & Membership Overview**
**Stick around after class to learn about our membership options and ask any questions to help you continue your boxing journey.**
**This is the perfect opportunity to kickstart your boxing journey, enjoy the energy, and join a supportive community. I’m here to help you every step of the way!**
Visit The Following Link To Sign Up
[https://www.neighborhoodboxingclub.com/freebeginnersclass](https://www.neighborhoodboxingclub.com/freebeginnersclass "https://www.neighborhoodboxingclub.com/freebeginnersclass")
Pop-up Book Club: A Streetcar Named Desire, by Tennessee Williams
Let’s meet and discuss whatever comes to mind about one of Tennesse Williams’ most famous plays.
Italian Conversation Hour
Ciao a tutt\*!
Let's meet Monday at 6.30pm at the Upper Arlington Library (Tremont Branch) in Meeting Room A to speak in Italian for 1 hour.
Keeping Monday for consistency but we can discuss if there are better days/times/locations!
Contra dance with Big Scioty on Feb. 7 - First Congregational Church
**Caller: Dan Kappus**
**Band: Trillium**
**Big Scioty Contra Dance**
**temporarily returning to our long ago location for Jan-March - First Congregational Church, 444 E. Broad St., Columbus 43215**
WHAT IS CONTRA DANCING? Picture the Grand Ball scenes like you’ve seen in period films such as “Pride and Prejudice”, where the dancers are lined up in long lines, across from each other. That’s English Country Dancing, the predecessor of contra dancing. Now, add moves like “swing your partner” and “do-si-do,” like you’ve seen in square dancing. Set it to fabulous, high energy, live music with fiddles, guitars, percussion and more, alá “Riverdance.” Finally, set the whole scene down in the middle of Woodstock, with a hip, groovy atmosphere, a bit of tie-dye, and hints of counter-culture attitude. THAT’s Contra Dancing!
Wear cool and comfortable clothes (you will get warm) and clean shoes that won't mark up our nice wood floor.
Be sure to come for the beginner's lesson from 7:30 - 8:00, followed by dancing 8:00 - 10:30. All dances are taught; we will help you learn! Beginners always welcome, no need to bring a partner.
Cost is $10.00 adults, $5.00 ages 12-26. Under 12 free. Free parking in church lot.
For more information contact me or check out our website: [www.bigscioty.com](http://www.bigscioty.com/)
Please bring your own refillable water bottle. Snacks to share are always welcome!
Christians in Tech - Meetup #28 @ Improving
Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you.
Our Website
[https://linktr.ee/citcbus](https://linktr.ee/citcbus)
Sponsors and Partners
* Improving (Venue Sponsor)
* Bethel World Prayer Center (Fiscal Sponsor)
* Fruits & Roots (Coffee Partner)












