Culinary Travel

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。 \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 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. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 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 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

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. If the weather cooperates we will be meeting in the patio. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who want to discuss international travel and culture, and anyone who enjoys getting together for good conversations."

Inspired by the successful events like "Pot Luck in the Park" and "Saturday Mornings @ East Market," this meetup promises a fun and engaging atmosphere where like-minded individuals can connect over a shared love for languages and cultures. Whether you're a language learner, ESL student, or simply passionate about exploring new cultures, this event is perfect for anyone looking to immerse themselves in a diverse and welcoming community. Come join us for an enlightening afternoon of language, culture, food, of course, and connections! (Everyone will individually choose from the buffet and pay for their own meal, by weight.)

# **Band: Old Possum's Menagerie; Caller: Richard Ades** Beginner lesson at 1:30, regular dancing begins at 2:00 pm NOTE THAT WE ARE TEMPORARILY DANCING IN THE AFTERNOON INSTEAD OF EVENING. Dance with us in the afternoon then you can still go out in the evening! **Sponsor: All Soles Contra and Square Dancing, First Unitarian Universalist Church, 93 W. Weisheimer Rd., Columbus OH 43214** 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 1:30 - 2:00, followed by dancing 2:00 - 430. 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. Please bring your own refillable water bottle.

Early-bird coffee and conversation at [Paris Baguette](https://parisbaguette.com/locations/oh/columbus/3969-merchants-row/)!

Join us for an interactive Bombay Gin Cocktail Class at TownHall — a fun, social experience designed to bring people together over great drinks, great food, and great conversation. During the class, you’ll learn how to craft several different Bombay Gin cocktails, guided by a master mixologist in a relaxed, high-energy setting. This isn’t a lecture — it’s hands-on, engaging, and built to spark connection, laughter, and good vibes. Whether you come solo or with friends, this experience makes it easy to meet people, enjoy expertly crafted cocktails, and unwind mid-week. ✨ What’s Included (A Ton 😁) • Multiple Bombay Gin cocktails • Interactive cocktail instruction • Food & appetizers sponsored by TownHall • A lively, social atmosphere 🍸 Sponsored by Bombay Gin 🍽 Food & appetizers sponsored by TownHall Must be 21+ to attend $20 fee per person