Complexity

**Authentische Ehrlichkeit - Ein Einführungs-Workshop** **💶 Wertschätzungsbeitrag vor Ort: 10-20 Euro (nach eigenen Möglichkeiten)** . \-\-\-\-\-\-\- . Gute Freundschaften leben von Ehrlichkeit & Vertrauen. . Gute Freunde kennen sich, wie ihre linke Westentasche: ihr Leben, ihre Gefühle, ihre Wünsche, ihre Einstellungen, ihre guten & ihre schlechten Seiten. . Gute Freunde können „Ja“ sagen, wenn es ein „Ja“ ist; und sie können „Nein“ sagen, wenn es ein „Nein“ ist. . Gute Freunde können sich sagen, was sie aneinander mögen, und sie können sich sagen, was sie nicht so toll finden. . **🙂 Ehrlichkeit als Basis guter Beziehungen** Ehrlichkeit ist die Basis, damit Nähe und Verbindung entstehen kann. . Sich hinter Masken und (unbewussten) Lügen zu verstecken steht dieser Verbindung im Weg. . Ich glaube alle Beziehungen im Leben werden vertrauensvoller, wenn man miteinander ehrlich ist: Liebensbeziehungen, Arbeitsbeziehungen, Freundschaften und selbst die Beziehung zur Bedienung im Café. . **🍀 Dieser Abend ist eine Einführung in die Ehrlichkeit.** Du erfährst, * warum „Lügen“ mehr ist als das bewusste Verdrehen von Fakten. * wie Du im Leben mehr von dem bekommst, was Du wirklich willst, weil Du Dich auf Ehrlichkeit einlässt. An diesem Abend werden wir in kleinen Schritten Ehrlichkeit üben, auch in unbequemen Situationen. . Du nimmst praktische Ehrlichkeitsübungen mit, die Du sofort im Alltag und in Deinen Freundschaften umsetzen kannst. **🧡 Zwei Worte über Ehrlichkeit** Ich habe mich lange versteckt, wollte meine schwachen Seiten, meine Ängste, Gefühle & Unzufriedenheiten nicht zeigen – immer mit der Angst, abgelehnt zu werden. . Irgendwann stieß ich auf Radikale Ehrlichkeit und buchte ein Wochenendseminar. Es war so befreiend! . Meine Erfahrungen findest Du hier: [https://abenteuer-freundschaft.de/radikale-ehrlichkeit-erfahrungsbericht](https://abenteuer-freundschaft.de/radikale-ehrlichkeit-erfahrungsbericht) . Danach habe ich das 8-Tages-Retreat gemacht, wo es wirklich ans Eingemachte ging. . Ich habe festgestellt, dass Ehrlichkeit meine Beziehungen zu anderen Menschen deutlich verbessert. . Gleichzeitig fühle ich mich deutlich wohler, weil ich mich nicht mehr verstecke. Ich bekomme meine Probleme gelöst (weil ich darüber spreche) und meine Wünsche erfüllt (weil ich darüber spreche). . Dieser Workshop ist mein Einstiegsbeitrag zu mehr Ehrlichkeit in Beziehungen und Freundschaften. . #### 👱🏼‍♂️ Über mich: * Mein Name ist Georg Preller * Ich bin Betreiber der Seite [www.abenteuer-freundschaft.de](http://www.abenteuer-freundschaft.de) * Ausgebildeter NLP-Lehrtrainer ([DVNLP](https://www.dvnlp.de/)) & Coach * Jahrelang selbstständiger Unternehmensberater * Eigene Vita: Von schüchternen Jungen zum fitten Mann * Mehr über mich: [LinkedIn - Georg Preller](https://www.linkedin.com/in/georg-preller/) . **⏰ Die Türen sind offen ab 18:15 Uhr.** Deinen Mantel aufhängen, WC, eine Runde schwatzen und los geht's... . **❓ Darf ich wiederkommen?** Es gibt nur wenige Veranstaltungen, bei denen man wirklich miteinander ins Gespräch kommt. Hier schon, mit Tiefgang. . Einige kommen immer wieder, um die kleinen Übungen nochmals im gesicherten Rahmen auszuprobieren oder aus Neugier, wie andere ihre authentische Ehrlichkeit leben. . Das Workshopprogramm ist auch jedesmal etwas anderes - je nach Gruppe und zunehmenden Erfahrungen. . **🎒 Was bringst Du mit?** * Etwas zu trinken (z.B. deine Wasserflasche, keinen Alkohol!) * Du solltest satt sein und vorher gegessen haben * Bargeld für Wertschätzungbeitrag . **🏠 Der Veranstaltungsraum** * Wir haben einen wunderschönen Raum in Berlin Mitte * saubere Toiletten * Gut mit Öffis zu erreichen nähe Hackescher Markt * Vor Ort ist alles ausgeschildert. . **Wegbeschreibung vor Ort:** * Vor Ort ist alles augeschildert. Vorsichtshalber hier eine Wegbeschreibung * Du klingest bei Hausnummer 28 bei Kieztreff * Du gehst in den Hinterhof und dort nach links * Dort klingelst Du und es wird Dir geöffnet. * Ich freu mich auf Dich! . **👋🏽 Weitere Gruppen & Kontaktmöglichkeiten** . **✈ Telegram-Kanal: [t.me/abenteuer_freundschaft](http://t.me/abenteuer_freundschaft)** für Events, Workshops & Treffpunkte für neue Freundschaften . **✉ Freundschafts-Newsletter:** [https://abenteuer-freundschaft.de/newsletter](https://abenteuer-freundschaft.de/newsletter) Alle 4 Wochen das Neuste aus der Freundschaftsforschung; oft seltener, denn ich schreibe nur dann, wenn es wirklich etwas zu berichten gibt. . **🔥 6 Zutaten großartiger Freundschaften** Seit 2020 forsche ich, was großartige Freundschaften wirklich ausmacht. Das Ergebnis ist das 30seitige eBook: "Die 6 Zutaten großartiger Freundschaften". Du erhältst das eBook zurzeit kostenlos mit der Anmeldung zum Newsletter: [https://abenteuer-freundschaft.de/newsletter](https://abenteuer-freundschaft.de/newsletter)

Welcome to Wet Chickens Comedy - The CREATIVE Open Mic that isn't like any other Open Mic! Comedians aren't allowed to use any old material - NEW JOKES ONLY! And in case they do old jokes. they will get wet, because the host will spray them with a toy water pistole!* *or with something else, but we will! When? Every Monday from 8PM Where? Agata Bar, Weichselstr. 55 in Berlin, Neukölln How much? Its FREE, just get you a reservation, because they might be SOLD OUT soon Doors: 19:30 Show: 20:00 *Reservations are only kept until 19:50, so please arrive before that for assured seating.

Tolle Berlinerinnen und Berliner, als ich schreibe, sitze ich im Wald zwischen Buchen und Eichen auf meinem Campingstuhl und genieße die Ruhe des Sonnenlichts. Suchst du nach Freiheit von dem Lärm der Szene, Lärm der Stadt? Möchtest du Brücken mit interkulturellen, diversen Leuten aufbauen? Dieses Jahr möchte ich unbedingt neue Leute, die Tiefe und Empathie haben kennenlernen. Diesen Leuten meine Zeit geben, und gegenseitige Freundschaften hoffentlich aufbauen. Selbst glaube ich, dass Mädels und Jungs einander nicht verstehen können, wenn der Sinn von einer Person 100% einer Geschlecht ist und die Person keines der Geschlecht gegenüber kennt. Idealerweise sollte der Sinn 50/50 weiblich/männlich sein, dass wir uns gegenseitig ideal verstehen können. Selbst bin ich Künstler, der sich für Farbphysik (Colour Phenomena) interessiert. Zum Beispiel ein roses Kirschbaum in der blauen morgen Stunde. Oder blaue Bäume im Licht eines bedeckten Sommer Tag, auch wenn jeder glaubt, dass man sachlich weiß, ‚Bäumen sind grün!‘ Colour sind, glaube ich, hauptsächlich weibliche Phänomene. Und als Künstler empfand ich seit langem eine Affinität für Colour. Das Bild oben ist ein Kunstwerk von mir. Ich möchte die ruhigen Leuten erreichen, also der Treff ist entweder Online, per Signal Messenger (Link zur Gruppe im Kommentar; nur für Teilnehmer der Veranstaltung sichtbar) um neue Verbindungen leicht zu machen, oder auch sogar besser persönlich, wenn du dich spontan unterwegs sein will und persönlich treffen will. Wenn du mich persönlich triffst setzen wir uns auf eine Wiese, eventuell in der Wuhlheide, oder auf dem Tempelhofer Feld. Schick mir eine Nachricht vorher per Signal Gruppe und wir können uns vereinbaren. Dieses merken: Bitte rauchen Sie bei dieser Veranstaltung nicht. Ich freue mich neue Leute kennenzulernen! Mit geschmackvollen Grüßen, Duncan

**Standup with 3 experienced comedians and then brand new jokes workshopped as a panel with your input.** Like a live writers’ room! Like Pimp My Ride but with jokes? Pimp our jokes into bangers or watch them get dumped at the scrapyard. **Strap in for a wildly funny ride with Berlin legends, rising stars and touring pros every Monday at Suess war gestern totally in English** Doors 8:00pm **Show 8:30pm – 9:30pm (60 min show no break)** **FREE ENTRY** - a donation is requested at the end of the show between 7 and 15€ cash/card depending on your life situation **To secure a seat, reserve for 10€ and that's your donation pre-paid via** \*\*[https://www.annaberos.com/berlin ](https://www.annaberos.com/berlin)\*\*or via **[https://pimpmyjokes2026.eventbrite.de](https://pimpmyjokes2026.eventbrite.de)** produced and usually hosted by **ANNA BEROS (AUS)** Anna’s a Kiwi born, Melbourne raised, Berlin based full-time independent standup comedian, YouTube host, podcaster and producer. She celebrates life’s struggles with incisive standup and playful audience interaction. Her new standup solo, High Hoe enjoyed a successful full run at the Edinburgh Fringe 2025 and her previous solos, Creampie Curious and Creampie Clarity played at numerous comedy festivals through the UK and Australia in 2023 and 2024. She tours Europe and produces and hosts 5 weekly shows in Berlin. In 2025, she opened for Jeff Arcuri at Admiralspalast, in 2024 for April Macie on US army bases in Germany and for Ian Fidance in Berlin in 2019. She hosts the comedy channel, Ersties Nonsense, has the podcast Adults ONLY Comedy Berlin and has written for Comedy Central DE. **[https://www.instagram.com/afberos/](https://www.instagram.com/afberos/)** **LINEUP on IG stories** @adultsonlycomedyberlin **https://www.instagram.com/adultsonlycomedyberlin/** GUEST COMEDIANS: Local and touring comedians with solid years in the game or hard-working promising new blood who host regular shows and/or are performing solo

Train Your Brain Confidence & Adaptability Under Pressure What if confidence, adaptability, and decision-making could be trained through play? This interactive workshop introduces Cognitive Agility Through Chess — a beginner-friendly experience designed to strengthen focus, resilience, strategic thinking, and communication in a supportive and engaging environment. This is not a traditional chess class. Chess is used as a tool for reflection, collaboration, adaptability, and cognitive development through interactive challenges and guided exercises. WHAT TO EXPECT ♟️ Beginner-friendly introduction to chess fundamentals 🧠 Interactive cognitive and strategic challenges 🤝 Team-based and collaborative gameplay ⚡ Exercises focused on adaptability and thinking under pressure 💬 Guided reflection and discussion THIS EXPERIENCE SUPPORTS • Confidence-building • Strategic thinking • Communication • Adaptability • Emotional resilience • Cognitive flexibility • Decision-making under pressure WHO IS THIS FOR? Women interested in: • self-development • leadership • psychology • strategy • meaningful social connection • cognitive performance • creative and reflective experiences No chess experience is needed. EVENT DETAILS 📍 Motel One — Invalidenstraße 54, 10557 Berlin 🕒 2 Hours 👥 Limited small group experience, from 6-12 participants per event PILOT SESSION This is part of a limited founding pilot series in Berlin designed to create a thoughtful, engaging, and collaborative learning experience. FACILITATED BY Radwa Omar Founder & Cognitive Agility Facilitator Train Your Brain — Cognitive Agility Through Chess Train how you think. Elevate how you perform.

We make landladies and landlords. They buy a flat and pay just 1/4. Tenants and tax cuts pay 3/4. It's not a trick. It's government policy. Our Federal Governments, past and present, want taxpayers to become landlords and landladies, buy property, rent it out to tenants and enjoy passive income later. Come check this out. No strings attached. No sales. Just a meet and greet for orientation. And an after work drink. Wir machen Vermieter. Steuerzahler kaufen eine Wohnung und zahlen dafür nur 1/4. Mieter und Finanzamt zahlen 3/4. Das ist kein Trick. Das ist Politik: Alle Bundesregierungen wollen, dass Steuerzahler Wohnungen kaufen, Mieter reinnehmen und später Beton‑Rente bekommen. Info-Abend nur zur Orientierung. Kucken kostet nichts. S,U Bahnhof Zoo, Kantstraße 163-165, 10623 Berlin, Motel One Upper West, 10th floor, exit lift to the right, turn left, circumvent the sign "vorübergehend geschlossen" Go justs there. I'll be there Georg Holzach. 0177 8181 900 WhatsApp Wanna read somethin before: landlord.holza.ch betonrente.holza.ch

### Open Platform for Writers to connect, share & grow. Together. ‍ We create a safe space to be creative, connect through writing and give and receive feedback from each other. Get ready for bringing in different writing styles and helping each other improve our own writing skills and get to know some new friends. ...for more info check out www.dna-artclub.com / follow us on IG: @nightart.club See You soon :) Love. DNA. ______ \*Members of Dair Night Art e.V. and Subscribers of DNA. Art GbR. \*\*By entering the DNA. ART HOUSE, You agree to comply with the Hausordnung of Dair Night Art e.V. and Geschäftsordnung of Dair Night Art e.V. Please ensure You review these documents thoroughly in advance.

**⚠️ IMPORTANT: REGISTRATION MANDATORY ⚠️** Registration on **Luma** is **REQUIRED** to attend this event. **Link: https://luma.com/1sre8dy7?utm_source=meetup** Your registration is subject to host approval. You must complete the registration process on lu.ma to receive the full event location details and confirmation of your attendance. **Please note: Without approved registration on Luma, you will NOT be able to access the event location or attend.** We are excited to host a **BLISS x dida workshop** featuring **Lazar Obradović (Lead Data Scientist @ cognee.ai)**, who will guide us through an interactive session on Agentic AI. ​Title: Explainable Scientific Discovery with AI Memory: Hypothesis Generation and Validation with Cognee and Bayer 📅 Date: 27.05.2026 🕕 Time: 18:00 📍 Location: TU Berlin Marchstrasse 23 [Room 0.011] ​The session will last around 2 hours, followed by a networking session with dida and fellow AI enthusiasts (and free pizza!🍕). Bring your laptop! **​Abstract: Building "AI scientist"** systems that can reliably generate and evaluate research ideas remains effectively an open problem. While LLMs make hypothesis generation cheap, current systems still struggle to connect evidence across papers, domains, and mechanisms in a structured and reusable way. Evaluation is equally difficult, often relying on opaque “LLM-as-a-judge” methods that are hard to interpret or reproduce. We use Cognee to ingest scientific literature and construct a graph-based representation of papers, claims, and entities with associated vector embeddings. We then use this structure to select and organize the context used for hypothesis generation. Candidate hypotheses are evaluated using explicit graph- and vector-based metrics grounded in the underlying corpus. Initial evaluations by Bayer across targeted biomedical domains demonstrated that graph-based AI memory can reliably support scientific hypothesis generation and validation. **⚡ FINAL REMINDER ⚡** **You MUST register and be approved on Luma to attend. The event location will only be visible after your registration is confirmed by the host. Link: https://luma.com/1sre8dy7?utm_source=meetup** *** We are **BLISS e.V.**, Berlin’s AI community connecting like-minded individuals passionate about machine learning and data science. Our **BLISS Workshops** connect **students and young professionals with industry partners**, offering an inside look into **how machine learning is applied in real-world settings** \- from research and development to deployment\. ​We are **dida**, scientific engineers who believe that **reliable AI** should not be a **"black box".** That is why we prioritize transparency, mathematics, and code over hype. By **bridging the gap between theoretical research and production**, we develop custom white-box AI solutions that are fully explainable, rigorously engineered, and free of "magic". ​​​dida Website: [https://dida.do](https://dida.do/?utm_source=luma) ​​dida Youtube: [https://www.youtube.com/@dida-do](https://www.youtube.com/@dida-do?utm_source=luma) ​​​BLISS Website:[ https://bliss.berlin](https://bliss.berlin/?utm_source=luma) ​​​BLISS Youtube:[ https://www.youtube.com/@bliss.ev.berlin](https://www.youtube.com/@bliss.ev.berlin?utm_source=luma)

Get ready for a night full of laughs at **Big Berlin Comedy!** High Energy Hosting, great vibes and lots of wild crowd interaction! Whether you're a local or just visiting, this is the perfect chance to enjoy some top-notch comedy with friends. Don’t miss out on the fun – comedy fans unite and let’s make it a night to remember! Doors 8pm Showtime 9pm Tickets It's NOT A FREE SHOW. It's Pay What You Want. You just decide the amount you want to pay AFTER the show. Artists deserve to be paid. If you plan to not pay at all, please don't come to our show!! Free Entry + Donation based. We suggest a donation of 10€-15€. Students & unemployed 5€-7€. We accept cards & cash

The next **Berlin C++ Meetup** hosted by think-cell takes place on **Tuesday, May 26**. Join us for an evening with the Berlin C++ community! This meetup is a chance to step away from your day to day work, meet other developers, exchange ideas, and have real conversations about modern C++ in a relaxed setting. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- ## **Talk** ### **Contract assertions on virtual functions** *Timur Doumler – Citadel Securities* Contracts assertions were introduced in C++26, but they cannot be applied to virtual functions. To close this gap, we first need to answer the question: how should contracts assertions behave in the presence of inheritance and runtime polymorphism? In this talk, Timur explores why this problem is harder than it looks. He reviews existing approaches from other languages, such as Eiffel, D, and Ada, highlights why they don’t fully translate to C++, and outlines the key design challenges involved. He then presents a concrete proposal for how contract assertions on virtual functions could work in C++, balancing correctness, safety, and usability. Along the way, the talk touches on good API design, the true meaning of the Liskov substitution principle, and how to reason about program correctness. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- 📅 **Date & Time:** Tuesday, May 26, 2026 – 18:30–21:30 📍 **Location:** Le Wagon Coding Bootcamp, Rudi-Dutschke-Straße 26, 10969 Berlin 🕒 **Agenda** 18:30 – Doors open 19:00 – Talk + Q&A 20:40 – Pizza, Drinks and Networking \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **RSVP now to save your seat!**

In Bad Company is a one-hour stand-up show hosted by Sepideh Kaav, featuring 2–3 of Berlin’s best comedians at one of Mitte’s coolest bars, HIER WO DU STRAHLST. Expect a night of great comedy, terrible decisions, and the kind of socializing where by the end of the night we all somehow know each other a little too well. No topic is off limits. No one is fully safe. Come with friends, come with a date, come alone, honestly, especially come alone, maybe you meet your future best friend or soulmate here. 🍸 HIER WO DU STRAHLST 📅 Thursday 8:30 PM (CEST) Doors: 20:30 Show: 21:00 to 22:00

Join us for an evening on the practical side of AI agents. We'll dig into context engineering and why relevance matters more than prompt tricks, then look at what it takes to run autonomous agents safely alongside humans. Food and drinks provided — stick around after for networking. ✍️ RSVP asap as capacity is limited so grab your spot asap! 📅 **Date and Time** Wednesday, May 27, 2026 from 18:00-20:45 📍 **Location** [EBCONT office, beyond Quartier Heidestrasse, 34, 10557 Berlin](https://maps.app.goo.gl/aQGPgteqhQ2yrmx96) 📝 **Agenda** 18:00 – Doors open, arrivals and check-in 18:20 – Welcome note by EBCONT 18:30 – **Agent Builder Hope is not a strategy — relevant context for data driven agents** by Anderson Queiroz — Elastic *What are agents and context engineering? And why we think the "center of gravity" for context engineering is much more about relevance and your data than only prompts and memory management.* 19:00 – Q&A & quick break 19:15 – **Adapting to AI in Security** by Jenny Pinheiro — Tines *Best practices for autonomous AI and human interaction in the context of workflows.* 19:45 – Pizza, drinks & networking \*\*\* Invite your friends and join us for an evening of learning and networking with fellow engineers and speakers! Thank you to **EBCONT** for hosting and to **Tines** for teaming up with us on this one!

**Berlin’s Only Comedy Show That Fixes Your Problems (Kind Of)!** Stand-up comedy meets hilarious, unqualified life advice! Comedians tackle your anonymously submitted problems live on stage—roasting, dissecting, and turning them into comedy gold. **Where?** The hidden Mitte gem —**Art.City.People** in **Heckmann-Höfe!** **When?** Doors: **8:00 PM** \| Show: **8:30 PM** Come for the stand-up, stay for the therapy—just bring your problems (or a friend with worse ones). Every show is a fresh mix of **four experienced comedians and new audience problems**—so you never know what to expect! Hosted by **Lena Stolby** — she’s Russian, so she *really* knows about problems! **&** We are a free entry pay-what-you-want show, and **have been running solely thanks to the support of the audience**, so to help us keep making this world a drama free place we **suggest a contribution of €12-15!** **Seats are limited, so book now!** The room gets very busy, so, to make sure you get a seat please book a seat via Eventbrite here (it’s free): https://www.eventbrite.com/cc/comedy-therapy-events-1626059

Welcome to the PyData Berlin May meetup! We would like to welcome you all starting from 18:00. There will be food and drinks. The talks begin around 18.30 and the doors will close at 18:45. **Make sure to arrive on time!** Please provide your first and last name for the registration because this is required for the venue's entry policy. If you cannot attend, please cancel your spot so others are able to join as the space is limited. **Host**: **GetYourGuide** is excited to welcome you to this month's version of PyData. \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* The Lineup for the evening **Talk 1: Text2SQL in the Wild — Agentic Workflows & Semantic Models on Customer Data** **Abstract**: Translating a business user's natural language question into a reliable SQL query has huge value for business analysts, but doing it accurately at scale, on messy enterprise data, for complex queries, is incredibly difficult. This talk walks through a production Text2SQL system built on four pillars: semantic models built on customer data, RAG-based semantic search, an agentic verification and correction loop for building the SQL, and an evaluation framework for the entire process. Raw schema information is not enough for text2sql to work. Rather, thorough documentation including business metrics, synonyms, and qualified example queries, are required. We'll cover how to automate this documentation pipeline by mining query logs, generating descriptions with LLMs, and organizing everything into a knowledge graph and vector search index. From there, we'll dive into the agentic flow that takes a user question and iteratively generates, validates, and fixes SQL against a live database. The agentic framework analyses syntax errors and execution results to help it fix the SQL. Participants will leave with practical takeaways on RAG architecture for structured data, agentic retry patterns, and how to think about evaluation for Text2SQL systems in production. **Speaker**: Oren Matar **Bio**: Oren Matar is a principal data scientist and algorithms developer, with a background in social sciences and Bayesian methods. He specializes in NLP and time series forecasting, as well as agentic methods for data retrieval and processing. **Talk 2: Interpreting and Communicating Statistical Models** **Abstract**: Extracting actionable insights from complex statistical models remains a challenge, as raw coefficients are often uninterpretable due to nonlinearity, interactions, or hierarchical structures. This talk introduces a unified framework for model interpretation based on the principles of the Marginal Effects project ([https://marginaleffects.com/](https://marginaleffects.com/)). We move away from internal model parameters toward quantities of interest, such as marginal effects and adjusted predictions that translate statistical output into the "natural language" of the data. We will demonstrate these concepts in Python using the Bambi interpret module, showcasing a seamless workflow for interpreting Bayesian models built on PyMC. The audience will learn how to use the four primary interpretative pillars: Predictions, Comparisons, Slopes, and Marginal Means to compute average marginal effects and visualize conditional relationships. By the end of this session, you will be equipped to turn sophisticated GLMs and multi-level models into clear, rigorous narratives that are easily communicated to stakeholders. **Speaker**: Juan Orduz **Bio**: Juan is a Mathematician (Ph.D. Humboldt Universität zu Berlin) and Principal Data Scientist at PyMC Labs. He is interested in interdisciplinary applications of mathematical methods. In particular, time series analysis, Bayesian methods, and causal inference. **Lightning talks** There will be slots for 2-3 Lightning Talks (3-5 Minutes for each) between the two main talks. Kindly let us know if you would like to present something :) \*\*\* NumFOCUS **Code of Conduct** THE SHORT VERSION Be kind to others. Do not insult or put down others. Behave professionally. Remember that harassment and sexist, racist, or exclusionary jokes are not appropriate for NumFOCUS. All communication should be appropriate for a professional audience including people of many different backgrounds. Sexual language and imagery are not appropriate. NumFOCUS is dedicated to providing a harassment-free community for everyone, regardless of gender, sexual orientation, gender identity, and expression, disability, physical appearance, body size, race, or religion. We do not tolerate harassment of community members in any form. Thank you for helping make this a welcoming, friendly community for all. If you haven't yet, please read the detailed version here: https://numfocus.org/code-of-conduct \*\*\*

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** Like it or not, AI agents are now capable of turning a quickly written paragraph of requirements into a pull request that is ready to be integrated into real-world production applications and it's now our responsibility to make sure AI doesn't go rogue and take down prod - or corrupt our data by misunderstanding the requirements or our existing schemas. In this session we'll explore strategies to protect our codebases through unit and integration testing, documentation, and code review along with additional ways of providing context and guard rails to our AI agents as they carry out the work we've assigned them to do. By the time we're done, you'll have a firm grasp of the problem and understand some helpful options for protecting your codebase from vibe coding mishaps getting YOLOed into prod. **YouTube Link** TBD

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

Most people use AI like a search box: they type one sentence, hope for the best, and get frustrated when the answer is generic, wrong, or useless. But getting better results from tools like ChatGPT, Claude, Gemini, and other AI systems is not about memorizing magic prompts. It is about learning how to give the AI better context. In this beginner-friendly session, we’ll break down how to make AI dramatically more useful by improving the way you communicate with it. You’ll learn how to give clearer instructions, provide examples, set constraints, ask for better output formats, and use follow-up questions to turn a mediocre answer into a genuinely useful one. We’ll cover practical techniques you can use immediately for work, learning, writing, coding, planning, research, and everyday problem solving. We’ll also touch on why these same ideas show up in more advanced AI systems, including RAG, agents, evaluations, and AI workflows. No technical background required. Bring your curiosity, your questions, and maybe one real task you wish AI was better at helping you with. **What you’ll learn:** * Why “better prompting” is really about better context * How to structure requests so AI gives more useful answers * How to use examples, constraints, and output formats * How to iterate when the first answer is not good enough * How these skills connect to more advanced AI workflows This meetup is for anyone who wants to move beyond basic ChatGPT usage and start getting more practical value out of AI. LOGISTICS AND PARKING: The talk starts at 7:00 PM. The first half hour is reserved for everyone to get set up and mingle. Free pizza and drinks! The cheapest parking option is to find street parking, which will only cost you a few bucks. Otherwise, park in the nearby veteran's museum lot for $8. It's highly recommended you avoid the nearby $15 garage parking.

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

**How to take control of your subconscious and harness its power!** Join us for an eye-opening lecture where the speaker will break down complex ideas in a clear and practical way. You’ll gain insights into: ✅ The true definition of the subconscious ✅ How it generates unwanted emotions ✅ Its real purpose and function ✅ What determines the pressure it exerts on you And the most important topic: **How do you take control of your subconscious!** But this isn’t just another lecture where you sit and listen passively. It’s interactive and engaging—you can ask questions at any time. 📅 Reserve your spot now! Seats are limited, so don’t wait too long to sign up. Location: 1266 Dublin Rd, Columbus, OH 43215 Hosted by the Hubbard Dianetics Foundation

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/