Data Architecture

We will be meeting at Starbucks to learn together. Come with an online class you're already going through or an interest and we will try to connect you with a course where you can learn it. Already have a skill you want to contribute to a Kaggle Datascience competition? We will work on these too! Laptop required :)

We will be meeting at Starbucks to learn together. Come with an online class you're already going through or an interest and we will try to connect you with a course where you can learn it. Already have a skill you want to contribute to a Kaggle Datascience competition? We will work on these too! Laptop required :)

Let's get together in a warm and open atmosphere to talk about ethical non-monogamy and how we actually do it. Ask for advice, give some in return, meet and mingle with your peers. Let's kick back and get to know each other and learn a few things. TOPIC: There's something so wonderful about the security of a lengthy relationship. But is there also something. . . a little smother-y? The location of our group will rotate between VA and MD. This week, we'll be in VA, at the home of our longest-serving host. FOOD: It's BBQ/picnic food season. I am beyond excited about the fresh tomatoes and peaches. Please consider bringing a vegetarian or vegan option; we do currently have active members who need these options. Cut-up fresh fruit is always great! If you don't feel like schlepping, we also always appreciate a donation. Please note: we share the address on the morning of the meeting, via the messaging/email system here. If you don’t have the details by Friday noon, you will need to message us directly to get them.

PyData London 2026 brings together data scientists, engineers, and researchers from around the world for three days of insightful talks, tutorials, and community connection. Hosted in one of Europe’s leading tech hubs, the event highlights the latest developments in Python, machine learning, and data science. Attendees can expect a mix of cutting-edge research, real-world applications, and opportunities to network with industry leaders. Whether you're a beginner or an expert, PyData London offers something for every level of the data science community. **THIS IS NOT A TICKET- TICKETS MUST BE PURCHASED ON CONFERENCE WEBSITE.** https://pydata.org/london2026

What's better than brunch? Brunch with the LGBTQ+ community, of course! Join the Dulles Triangles at 11:00 AM for a dazzling brunch at **[Amphora Diner](http://amphoragroup.com/amphoras-diner-deluxe/)**, located at **1151 Elden St, Herndon, VA 20170**. This is your chance to catch up with old pals, make some new ones, and bask in the glory of a Sunday well-brunched! Amphora’s menu is as diverse as our community, offering everything from omelets and pancakes to divine bakery treats. Seriously, their pastries are more irresistible than a shirtless Ryan Gosling holding a puppy! **RSVP Required!** Amphora needs a headcount beforehand, and adding seats at the last minute is like trying to squeeze into last year’s pride outfit—tricky! To ensure you get a seat at the brunch extravaganza, RSVP on Meetup or in the Dulles Triangles Facebook group by the day before. Those who RSVP get priority seating, and we promise not to judge if you show up in sequins. Remember to ask for Dulles Triangles when you arrive. Use the links below to RSVP and secure your spot faster than you can say "mimosas." This event is usually held on the first Sunday of each month, but check for updates because we like to keep things as flexible as our dance moves. Keep an eye on the current schedule so you don't miss out!

**REGISTER AT THE LUMA EVENT PAGE!!!** https://luma.com/27ja5gwl Join us for an exciting talk by Mary Gibbs, Senior Applied Scientist at Relativity. ​ ​**​Agenda:** ​​6:00 - 6:30 PM - Welcome and mingle 6:30- 6:45 PM - Introductions 6:45 - 7:30 PM - Talk 7:30 - 8:00 PM - Wrap up **​​Description:** ​If you have ever shipped a model, watched your metrics improve, and later learned from your users that something was wrong, the metrics were always wrong. You just didn’t know it yet. An evaluation consists of three components, a benchmark, a scorer, and a claim about what a score represents. Each component has its own weaknesses. Benchmarks can suffer from narrow coverage, contamination, or saturation. Scorers are often chosen for ease of automation or computation rather than for their alignment with user outcomes. And the claim connecting a score to reality is rarely made explicit. These gaps compound across the model development lifecycle. When metrics improve, teams treat that as a signal and optimize directly against it, which is how a measurement problem becomes a model problem. This talk maps where evaluations can go wrong, considers counterarguments, and ends with practical advice for building better ones. **​Speaker Bio:** ​Mary is a Senior Applied Scientist at Relativity, tackling data science challenges in the e-discovery and legal tech space. She is also an organizer for Women and Gender eXpansive Coders DC (formerly Women Who Code DC), fostering a community dedicated to empowering women and nonbinary individuals to excel in their careers. Mary's experience spans various domains. She has developed data science solutions related to job search and career progression at Teal, cybersecurity challenges at LiveAction Software, and commercial and government consulting at Mosaic Data Science. Before venturing into the field of data science, Mary conducted and published research pertaining to the cellular and molecular mechanisms underlying neurodevelopment at the National Institutes of Health. In other words, she has dissected and imaged a lot of fruit fly brains. She holds a M.S. in Data Science from The George Washington University and a B.A. in Biological Sciences from Cornell University

**Chantilly Carb Crawl: Asian Breads & Pastries** **🍞** **Whether you’re a long-time member or this is your very first event, come with us on a mini-tour of 3 of Chantilly’s hidden gems. It’ll be a fun chance to reconnect, meet new members and enjoy some amazing breads and pastries!** **The Game Plan** ***11:00 AM — Café Moment*** **We’ll kick things off at this new cafe specializing in** **Korean Salt Bread. If you’ve never tried it, imagine eating a warm, buttery, fluffy cloud (yes, I am drooling as I write this)** **Next, we’ll head over to Mahiwaga for some warm, freshly baked** **Pandasal. If you’ve never had this Filipino classic fresh from the oven, this father/daughter team** **make** **some of the best!** **We’ll wrap up with a stop across the hall at Toimoi Bakery for their famous** **pandan and banana pudding filled croissants** **🥐.** **Can't wait to see you there! RSVP to save your spot!** [Cafe Moment](https://www.instagram.com/reel/DX-C-Hmhg7g/?igsh=dHd4N2RodWwwaHo1) [Mahiwaga](https://www.instagram.com/reel/DXiCy0Gz0P5/?igsh=Mm45a2c3ZWJtM2pv) [ToiMoi Bakery ](https://www.instagram.com/reel/DX0O-2KuRiT/?igsh=MWh2bjN4cHE1am55eg==)