Learning

Join our in-person meetup on April 24th to hear talks from experts on cutting-edge topics across AI, ML, and computer vision. **[Register to reserve your seat.](https://voxel51.com/events/berlin-ai-ml-and-computer-vision-meetup-april-24-2026)** Space is limited! **Date, Time and Location** Apr 24, 2026 5:30 PM - 8:30 PM [MotionLab](https://motionlab.berlin/) Bouchéstraße 12/Halle 20 12435 Berlin **Kaputt: A Large-Scale Dataset for Visual Defect Detection** We present a novel large-scale dataset for defect detection in a logistics setting. Recent work on industrial anomaly detection has primarily focused on manufacturing scenarios with highly controlled poses and a limited number of object categories. Existing benchmarks like MVTec-AD (Bergmann et al., 2021) and VisA (Zou et al., 2022) have reached saturation, with state-of-the-art methods achieving up to 99.9% AUROC scores. In contrast to manufacturing, anomaly detection in retail logistics faces new challenges, particularly in the diversity and variability of object pose and appearance. Leading anomaly detection methods fall short when applied to this new setting. To bridge this gap, we introduce a new benchmark that overcomes the current limitations of existing datasets. With over 230,000 images (and more than 29,000 defective instances), it is 40 times larger than MVTec and contains more than 48,000 distinct objects. To validate the difficulty of the problem, we conduct an extensive evaluation of multiple state-of-the-art anomaly detection methods, demonstrating that they do not surpass 56.96% AUROC on our dataset. Further qualitative analysis confirms that existing methods struggle to leverage normal samples under heavy pose and appearance variation. With our large-scale dataset, we set a new benchmark and encourage future research towards solving this challenging problem in retail logistics anomaly detection. The dataset is available for download under [https://www.kaputt-dataset.com](https://www.kaputt-dataset.com). *About the Speaker* [Sebastian Höfer](https://www.linkedin.com/in/sebastian-h%C3%B6fer-891178121/) is an Applied Science Manager at Amazon Fulfillment Technologies & Robotics, leading machine learning and computer vision research for large-scale robotics and warehouse automation. He received his PhD from the Robotics & Biology Lab at TU Berlin, focusing on Sim2Real transfer and robotic perception. His recent work, “Kaputt: A Large-Scale Dataset for Visual Defect Detection” (ICCV 2025) [37], established a major benchmark for industrial anomaly detection, reflecting his expertise at the intersection of academic research and real-world deployment. **Data Foundations for Vision-Language-Action Models** Model architectures get the papers, but data decides whether robots actually work. This talk introduces VLAs from a data-centric perspective: what makes robot datasets fundamentally different from image classification or video understanding, how the field is organizing its data (Open X-Embodiment, LeRobot, RLDS), and what evaluation benchmarks actually measure. We'll examine the unique challenges such as temporal structure, proprioceptive signals, and heterogeneity in embodiment, and discuss why addressing them matters more than the next architectural innovation. *About the Speaker* [Harpreet Sahota](https://www.linkedin.com/in/harpreetsahota204/) is a hacker-in-residence and machine learning engineer with a passion for deep learning and generative AI. He’s got a deep interest in VLMs, Visual Agents, Document AI, and Physical AI. **Most AI Agents Are Broken. Let’s Fix That** AI agents are having a moment, but most of them are little more than fragile prototypes that break under pressure. Together, we’ll explore why so many agentic systems fail in practice, and how to fix that with real engineering principles. In this talk, you’ll learn how to build agents that are modular, observable, and ready for production. If you’re tired of shiny agent demos that don't deliver, this talk is your blueprint for building agents that actually work. *About the Speaker* [Bilge Yücel](https://www.linkedin.com/in/bilge-yucel/) is a Senior Developer Relations Engineer at deepset, helping developers build agentic AI apps with Haystack. Passionate about AI, she makes complex concepts approachable through hands-on tutorials, both online and at real-life events. **Operationalizing Computer Vision for Overhead Lines: Beyond the Demo** At first glance, visual inspection of high-voltage power lines seems straightforward: collect imagery, run one or two AI models, and report the findings. In practice, moving beyond a proof of concept reveals a range of issues that can make or break a campaign. Common concerns include data quality and coverage, scarcity of the most relevant cases and abundance everywhere else, variations in pylon geometry and asset types across regions, calibration and GIS alignment challenges, and a long tail of edge cases that emerge in real-world operations. This talk introduces Siemens Energy’s end-to-end overhead line inspection solution and shares key learnings from inspecting more than 10,000 km of power lines for real customers across several continents. We will show how raw 2D/3D data is transformed into structured information, delivering insights into asset inventory as well as defects, and supporting maintenance and planning decisions for critical infrastructure. The focus is on the combination of algorithmic building blocks and scalable processing, designed for robustness and consistency at scale, where even low error rates can become operationally significant. *About the Speaker* [Stefan Wakolbinger](https://www.linkedin.com/in/stefan-wakolbinger-aa0ba874/) is the Development Team Lead for AI & Analytics at SIEAERO, Siemens Energy's digital powerline inspection service. He leads the development of cutting-edge AI and analytics solutions that transform aerial powerline inspection through multi-sensor technology. His team creates digital twins of powerline infrastructure, automates fault detection, and monitors vegetation management—making powerline inspection safer, more precise, and more efficient. Stefan has been driving innovation in this role since September 2022. **Search your video library like a database** Drop in YouTube URLs or upload files and query content four ways: exact keyword matching, semantic search across transcripts, visual scene search via SigLIP2, and LLM-generated answers that synthesise across segments. [Paras Mehta](https://www.linkedin.com/in/pmehtaeu/) is a Berlin-based AI engineer and CTO/co-founder of Sylby, a language learning app he built from scratch, reaching 10,000 users and raising €350K. Previously: data scientist at Motionlogic, senior software engineer at Volkswagen, a PhD from Freie Universität Berlin, and a visiting stint at Cambridge. He now works as an AI engineer at HPI's AI Service Centre.

A small NEXUS gathering built around movement and natural conversation. **Important!** We’re moving our full event schedule to our website. 👉 For all upcoming events and details, visit: [https://nexuswerkstatt.com](https://nexuswerkstatt.com)

Meet like-minded people, get authentic meditation instructions and hang out in our beautiful Buddhist meditation center in the west of Berlin! The practice of meditation is a simple, yet profound practice that helps us to connect with ourselves and gives us tools to release experiences of distraction, agitation, and stress. In the Buddhist tradition, meditation is more than just a way to end the mind´s distraction - it is what helps us to bring our mind home to its true nature. What better way to experience the colourful facets of meditation than with a group of like-minded people? Hence our open meditation sessions always have a social element as well - we like to have a tea and share about our meditation experiences, or whatever else we want to explore. There is also always the chance to ask questions to our experienced meditation instructors. These sessions are held in English and open to everyone - complete beginners as well as those with more experience. The sessions are every week on Friday at 17:00-18:30.

* German below -
Please bring clean indoor shoes with you to the location <3 The event fee varies between 5 to 10 Euros. 

Hey You!
On Friday I will teach you a few basic steps of shuffling. We will break down the steps, in your time, in your style.
We will explore your own flow of your body to different kinds of music and how we can use it in shuffling. I want to create a safe space for everyone who is just starting their shuffle journey or is already on the path. 

Address:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule” 

Hallo Du!
Diesen Freitag möchte ich Dir ein paar Basic-Schritte vom Shufflen zeigen. Wir werden die Schritte langsam durchgehen, in deiner Zeit, in deinem Tempo.
Wir werden den eigenen Flow entdecken und wie Du deinen Körper zu verschiedner Musik im Shufflen integrieren kannst.
Ich möchte für jede Person einen Safe-Space erschaffen, egal ob Du ganz Neu bist oder schon etwas gelernt hast. 

Adresse:
Milastraße 4
10437 Berlin
“Aziza-tanzt Tanzschule”

**Village Heart Circle** hosted by **Marco Astolfi** & **Torsten Bless** for **GBTQ men\*** **[free event with registration](https://wearevillage.org/shop/heart-circle/w17-2026)** Are you looking for a space where you can express your feelings and share your experiences in a loving and supportive community of GBTQ men\*? In this circle we can sit together peacefully to speak from the heart and listen with our hearts, honouring the different ways from which we come in a safe and non-judgemental space, honouring the different ways from which we come in a safe and non-judgemental space. The Heart Circle is a practice originated by Native Americans and adopted by the Radical Faeries to build community. **General Information** We open the doors at 7:30 p.m. To protect the integrity of the Heart Circle, we ask that you arrive before 8:00 p.m. **Language**: This event will be in German and/or English depending on participant needs. 🔵 Suchst du nach einem Ort, an dem du deine Gefühle und Erfahrungen teilen kannst, in einer unterstützenden Gemeinschaft von schwulen, bisexuellen, trans und queeren Männern\*? Der Kreis ist ein Ort, an dem wir friedlich zusammensitzen, aus dem Herzen sprechen und mit dem Herzen zuhören können. Ein Ort, an dem wir die unterschiedlichen Lebensumstände, aus denen wir kommen, respektieren, ohne zu urteilen. Der Heart Circle ist eine Praxis, die von den Ureinwohnern Nordamerikas stammt und von den Radical Faeries übernommen wurde, um Gemeinschaft zu bilden. **Hinweise** Wir öffnen die Türen um 19.30 Uhr. Um die Unversehrtheit des Heart Circles zu bewahren, bitten wir dich, vor 20:00 Uhr zu erscheinen. **Sprache**: Je nach Bedürfnissen der Gruppe werden wir Deutsch und/oder Englisch sprechen.

Liebe Deutschlernende, Das nächste Sprachcafé findet am **24.04.** von **15:30 bis 17 Uhr statt.** Das Thema: Wird vor Ort bekannt gegeben. Wir freuen uns auf euch!

Die Kunst der HANDS-ON ASSISTS | Community Work Workshop — ein selbstorganisierter Workshop für Yogalehrer — kein Frontalunterricht — nur eigenes Erfahren, gemeinsames Üben, konstruktivem Feedback, Üben, Kommunikation Ein praxisorientierter Workshop, der dir viel Sicherheit bei Yoga Adjustments vermittelt, weil du übst und nicht aus der Übung kommst. Dein Schüler spürt deinen Sicherheit sehr genau. Nur dann kann er sich voll auf dein Assist einlassen und davon profitieren. Inhalte — Austausch von unterschiedlichen Techniken — Vergleich der Techniken — praxisorientiertes Pro- und Kontra — Sicherheit beim Hands-On-Assist — Feedback deines Schüler — HANDS-OFF ASSISTS: arbeite verbal mit der Vorstellungskraft des Schülers — HANDS-OFF (almost) ASSISTS: taktile Reize — HANDS-OFF ASSISTS: Druck im Gegendruck/Schub zu erzeugen — Berücksichtigen der individuellen, altersrelevanten, religionsbedingten, körperlichen Privatsphäre Yogalehrer jeder Tradition profitieren von diesem kostenlosen Workshop. Preis: kostenlos, wir freuen uns über eine Teespende Anmeldung: yogaatlobe@gmail.com oder komme einfach vorbei. Wann: Jeden 2. Freitag im Monat, 18 Uhr Leitung: Yoga Makes Me Happy - Christina Metzler ***Filmen und Fotografieren ist erlaubt für eure eigenen Lernzwecke und empfehle ich sehr!***

We’re inviting you to a one-of-a-kind afternoon at one of Berlin’s coolest cafés, where you’ll level up your **language skills** in the most **fun and interactive way possible**. Watch our **[event teaser video](https://youtu.be/JpDDBC7KUQU)**. ​We’re talking **memes**, **quizzes**, and **creative challenges** that make mastering languages an experience, not a chore. 🎉 **What to Expect** * ​​**Interactive Learning 🧠:** Forget about traditional lessons. We’re diving into languages with **interactive games**, **meme-based learning**, and **real-life practice** that gets you talking, laughing, and learning in a way that sticks. * ​**Gen Z Vibes Only 🌟:** This isn’t your traditional language class. It’s built with our generation in mind—fun, engaging, and designed to keep you hooked. * ​**Community Vibes 🤝:** Do you want to improve your language but feel shy? Don’t worry – everyone here is focused on improving and learning together. **​** **When & Where** We meet every other **Saturday**, hopping from café to café in different **neighborhoods**. The exact location will be disclosed 24 hours before the event! 📅 **Why Join?** ​ This event is all about **putting your lanugage skills into practice** in a relaxed, social setting. You’ll not only improve your language but also discover some of the **best spots** the city has to offer. 🌍✌️ **Who Will join?** 8-10 Young Professionals & Students (this event is also being advertised on other platforms).

Join us for an afternoon of cultural exchange and German conversation practice at our Berlin Conversation Meetup Group event — complete with interesting chats and a beer or two at our local bar BrewDog Berlin Mitte. Connect with like-minded individuals who are passionate about language learning, culture, and community. Share your experiences, learn about different cultures, and engage in meaningful discussions across German language levels. From beginners to advanced levels, all learners and speakers of German are welcome! Whether you're a local resident or a curious traveler, this event promises to be a blend of fun, learning, and connecting with others who value the richness of cultural diversity and language learning. This event is hosted by the online language school lalia-berlin.com, helping German learners to overcome communication barriers and grow into confident speakers of German. Join us for this fun afternoon of practice and renew your motivation to break through to the next level in German! We use a [WhatsApp group](https://chat.whatsapp.com/CumRuFFzUWGF6jToK3GHIA?mode=wwt) where we share updates like the exact location and any last-minute info on the day of the event. **Feel free to join if you’d like to stay in the loop**: https://lalia-berlin.com/offline-events

Meet, Match, MoveOn and Manage or Master Why Meet 1)Meet new People Culture Languages. 2)Not Match Romance, Political Views nor Religion, only Respect and Joy 3) Moveon, advance with your level, goals, and especially share and try Rotate the groups and let others participate a bit. 4) Master the challenges, and Manage to give a Like or appreciate the meetups!! **Thematic** or small Concept: Manage to Bring 2 German Friends and you get a Drink. if you bring your Ex Partner + 2 German friends =2 drinks = thats the Challenge and the Attitude of 2026

🚀 **Google AI Berlin In Person Workshop – 25th April 11:00-14:30** Are you curious about Artificial Intelligence and how it can be used in real life and work? Join us for our upcoming Google AI Workshop in Berlin! 📅 **Date:** 25 April ⏰ **Time:** 11:00 – 14:30 📍 **Location:** Heinz-Galinski-Straße 13, 13347 Berlin *** ### 📚 **Program Structure** This program includes: * \~4 hours of self-paced online learning (Coursera) * In-person workshop on 25 April in Berlin *** ### 🤖 **What to expect:** * Introduction to AI fundamentals (no technical background needed) * Learn how generative AI tools work in practice * Hands-on, interactive exercises and discussions * Real-life use cases of AI in work and productivity * Connect with others interested in AI and tech 🍕 **Food and drinks will be provided** — come learn, network, and enjoy! *** ### 🎓 **Bonus** If you successfully complete the "**Google AI Essentials"** course, you will be granted full access to the entire [Google Coursera catalog](https://docs.google.com/spreadsheets/d/135DsxmVC3bbVlnPagxQ11KYsN8krtqZH/edit?gid=1546284735#gid=1546284735) \- including professional certificates such as Project Management\, Data Analytics\, IT Automation with Python\, and many more\, all at no cost\. \(Subject to change\) *** ### 📩 **After Registration** Once you have successfully registered, you will shortly receive a confirmation email with next steps as well as access to Coursera. *** Whether you're just starting out or exploring new skills, this workshop is a great way to get introduced to AI in a practical and engaging way. **Note:** **This course is fully scholarship-based, meaning you do not need a Bildungsgutschein to participate 😇** 👉 **Register now and secure your spot!** [https://www.startupistan.org/ai](https://www.startupistan.org/ai)

!!! Note the corrected meeting spot, which for some reason keeps getting changed in the event: [https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA](https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA) \-\-\- **Mandarin Learner Meetup in Berlin! *(Free resources below)*** **Learning Mandarin is like trying to tame a** 🐲**.** It can feel frustrating, but you’re not alone. **[WeHanzi](wehanzi.com)** is here to support! **[WeHanzi](wehanzi.com)** is an independently built iOS app created by Ben and Gina. We've turned the entire learning experience into ***Comprehensible Input* through both simplified and traditional manga** with support for **Zhuyin**, **Pinyin**, **flashcards**, **audio**, **direct translation**, an integrated dictionary. We also specifically design region-specific language to reflect real-life usage in both **mainland Chinese Mandarin** and **Taiwanese Mandarin**, allowing you to naturally compare and explore the differences between the two, so you don’t end up saying something that makes perfect sense in Beijing, but gets you funny looks in Taipei 😏. Now, together with our good friend Matthias from **[Gemeinsam Chinesisch & Deutsch lernen](https://www.meetup.com/gemeinsam-mandarin-chinesisch-und-deutsch-lernen/events/308204343/?eventOrigin=group_upcoming_events),** we’re inviting you to our very first **in-person Mandarin Learner Meetup in Berlin** together! All levels are welcome, from beginners to advanced learners. Just come hang out, share your stories, laugh at our tone mistakes! As a community, we can learn from each other and turn Mandarin into a piece of cake! 🍰 **Come and join us!** 📱 App: [Wehanzi.com](https://wehanzi.com/) 📸 Free bite-sized resources: [Instagram](https://www.instagram.com/wehanzi/) 📚 More free tools: [wehanzi.app/menu](https://wehanzi.app/menu) **📍ABOUT THE MEETING SPOT** Please note that we will meet HERE, on the 3 wooden tree benches slightly left of the main entrance gate of Tempelhofer Feld: [https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA](https://maps.app.goo.gl/L8SuKJxoLLa8hXCdA) We'll meet at the meeting spot first and then - depending on the weather - decide as a group to either walk around Tempelhofer Feld or go to a closeby restaurant to warm up and chat. So please be on time. Or if you are running late or can't find us, just give Matthias a call on 0176-21984345. See you all soon, Gina & Matthias

Meinungsaustausch, Investmentideen, Buchbesprechungen, Charttechnik, Fundamentalanalyse. Wir diskutieren über die Themen Börse, Investment und Trading. Verkehrssprache ist deutsch. Egal ob Anfänger, Profi oder "will nur mal gucken": jeder ist willkommen und kann mitreden. Die Veranstaltung ist insbesondere geeignet für aktive Händler in Einzelaktien, Optionen und Rohstoffen. Es geht viel um technische Analyse und technische Markteinschätzung, aber auch um fundamentalanalytisch basierte Einzelaktienauswahl, Volatilitätshandel und Optionshandel. Es gibt ein Musterdepot, dessen Struktur und Performance als Diskussionsgrundlage dienen soll. Jeder kann seine Meinung dazu äußern. Das Musterdepot findest Du bei wikifolio.com unter https://www.wikifolio.com/de/de/w/wf000bit01 Meinen Youtube-Kanal findest Du hier: https://www.youtube.com/channel/UCCmOeA2-rAS2P8YZNp11N6Q Kryptowährungen spielen thematisch nur eine untergeordnete Rolle. Der Kurzvortrag mit Diskussion startet pünktlich 17.15 Uhr. Wer viel Aufmerksamkeit braucht, kommt einfach zu spät und wird von allen angeschaut :-) Wer noch Kontakte knüpfen oder quatschen möchte, sollte schon ca. 16.30 Uhr kommen. Die Veranstaltung endet püntklich um 19 Uhr.

Welcome to Sunday Tech Coffee. This is a **networking** event for those in the tech industry in Berlin. We are usually inside and to the right. Ask the barista/bartender if you can't find us.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

5:45-7:45 in Conference Room B, Library lower level. Bring your yarn projects, meet new friends. If you plan to attend, please RSVP yes. If you can’t attend, please change your RSVP to no. This helps anyone who is waitlisted and it allows me to have an accurate count of attendees as our space is quite limited. Plenty of parking in the lot, in the overflow lot across the street, and on the street. See you there!

Bring your work or your hobby, hang out, and code with us. Follow @buckeyecocoa for more information.

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

**Sunday Golf League at Safari Golf Club ⛳** Join us for a fun and social golf season at **Safari Golf Club** (next to the **Columbus Zoo and Aquarium**) in Powell! 🗓 **Sundays at 3:45 PM** 📅 May 3 – August 2 🏆 Week 13 (Aug 2): 9-hole scramble, awards party, food & prizes 🌧 Rain Date: August 16 🚫 No play on May 24 ⛳ **Season Includes:** • 13 weeks of golf • 12 weeks of 9-hole play • 13th week scramble + awards celebration 🚶 Walking is welcome in this league! You can choose to play in a **competitive** or **social** group — all skill levels encouraged. 💲 Full Season: $382 💲 Half Season: $210 YOU MUST SIGN UP AND PAY FOR LEAGUE WITH LINK BELOW: [Sunday Golf - 2026 - Calendar - Columbus Ski Club](https://www.columbusskiclub.org/content.aspx?page_id=4002&club_id=686961&item_id=2877928&actr=3) Questions? Peggy McDaniel (Activity Leader) – 614-216-6779 Bev McCain (Scoring Assistant) – 614-738-6560

It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.