ESRI

Let’s do a loop around the perimeter of Georgetown. Milage: 5 mi Start Location: Foggy Bottom Metro Station End Location: Rosslyn Metro Station Approximate Time: 6pm - 8pm Map (Approx.): [https://maps.app.goo.gl/gyUXRJ3GuSW7m3LT6?g_st=ic](https://maps.app.goo.gl/gyUXRJ3GuSW7m3LT6?g_st=ic) Terrain: This will be mostly on trails with some stairs and steep climbs \-\-\- We try to be punctual with our event times so please be respectful to others and show up a few minutes early, because we will leave without you. We're always looking for new leaders who can showcase their neighborhood or any cool places they know, so please reach out either at an event or on meetup if you are interested. If you've enjoyed our walks please consider donating a few bucks to help us keep this group running (meetup is expensive!). [Donation Link](https://venmo.com/code?user_id=2158403661070336114)

Let's get together to play some fun BB level Quads games at Bluemont. **Format**: Doubles **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Intermediate-BB (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 1. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 1. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

This presentation will offer a few historical firsts of public transit in the U.S., starting from its origins in 1630, before turning to some oddities and strange beginnings of public transit from across the globe. Part history, part trivia, this examination will also provide some analysis of what these various public transit beginnings and curious cases suggest about the forces and patterns that govern public transportation.

**Pre-registration is REQUIRED. RSVP here - [https://hubs.li/Q046VS--0](https://hubs.li/Q046VS--0)** **Speaker:** Michael Novack, Solutions Architect at AIceberg **Topic title:** "Trust What You Can Trace: Making Agentic AI Explainable, Secure, and Enterprise-Ready" As enterprises adopt increasingly powerful AI systems, one critical challenge remains: understanding how and why these systems make decisions. Many modern models - especially large language models - operate as opaque “black boxes,” making transparency, compliance, and trust difficult to achieve. *This webinar introduces the AI Explainability Scorecard, a practical framework for evaluating the transparency of AI systems based on criteria such as faithfulness, consistency, accessibility, and comprehensibility*. Attendees will learn how different model architectures - from K-Nearest Neighbors to neural networks and transformers - vary dramatically in explainability and risk. **The session will also explore real-world techniques for improving visibility into complex models, including surrogate monitoring approaches that map AI behavior to comparable examples.** These methods help organizations build observable, auditable AI systems without sacrificing performance or scalability. By the end of this session, attendees will understand how to move beyond black-box AI toward transparent, accountable, and secure AI deployment - a critical step for enterprises scaling agentic AI in high-stakes environments. You will learn: **\- Why Explainability Is the Foundation of Trustworthy AI** *Learn why transparency isn’t just a technical preference - it’s becoming a legal, ethical, and operational requirement for enterprise AI systems.* **\- The AI Explainability Scorecard Framework** *Understand the five key criteria - faithfulness, comprehensibility, consistency, accessibility, and optimization clarity - for evaluating how explainable an AI model truly is.* **\- How Different AI Models Compare in Transparency** *Discover why some models are inherently interpretable while others require advanced methods to understand their behavior.* **\- Practical Methods for Making Black\-Box AI Observable** *Explore modern techniques - including surrogate monitoring models - that help organizations understand and audit large language models at scale.* 🔗 Stay Connected * **Learn:** Free talks and trainings on the [Ai+ Training platform](https://aiplus.training/). * **Read:** The latest in AI research on the [ODSC Blog](https://opendatascience.com/). * **Chat:** Join the conversation in our [Slack Channel](https://www.google.com/search?q=https://odsc.com/slack). * **Community:** Review our [Code of Conduct](https://odsc.com/code-of-conduct/).

Brisk 3- to 4- mile urban hike starting and ending at the Brig. We will hike to Southwest, before circling back past Bartholdi Park and ending at the Brig for drinks and food. Closest Metro Eastern Market.

To secure your spot, purchase your ticket from the Eventbrite link (https://www.eventbrite.com/e/green-sustainable-energy-environment-virtual-hour-tickets-150586158253). RSVPing only on the Meetup page, doesn't allow you to attend the Event. ABOUT THE EVENT This Happy Hour is devoted to professionals in the Green, Sustainable Energy and Environment; to grow, interact, and learn from each other. It is designed to provide a professional environment to meet other professionals to broaden one's career. It is also for those interested in careers in the sector and are studying or intend to enter the dynamic world of green movement. HOW IT WORKS : We will try to assign Breakout Rooms for each represented INDUSTRIES AND SPECIALIZATIONS; and will direct attendees to their respective breakout rooms accordingly. All are welcome! However we don't guarantee the availability of a partner in that particular experience, you would like to exchange. Space is limited and advance ticket purchase is required. NOTES : 1. Sign up on Eventbrite for FREE . 2. When you purchase a FREE ticket, you will be emailed the Event ID and Password, on the day of the event. 4. As we try to make it a live event, you can't turn off your camera. 5. We have limited spots and RSVP at your earliest convenience. 6. Bring Your Own Beverage (BYOB - Alcoholic/Non-Alcoholic). **FOR FURTHER DETAIL, REFER THE EVENTBRITE LINK**. IT RULES.

**April’s event will give you a sneak peek of [FedGeoDay 2026](https://www.fedgeo.us/)!** GeoDC’s guest speakers for the evening will be members of the organizing team for **[FedGeoDay](https://www.fedgeo.us)**, a conference about how federal programs and stakeholders build, support and use geospatial open-source software, open data, open science and open mapping. **FedGeoDay 2026: *Building Ecosystems for Supporting Federal Data Stewardship*** Do you use US Census data, NASA satellite imagery or federal GIS tools? Curious how policy changes and AI innovation are shaping the way we think/talk about or solve problems with location and maps? **FedGeoDay 2026**, a conference on April 22–23 in the DC area, will answer these questions and more. **[FedGeoDay](https://www.fedgeo.us)** is the premier conference devoted to how federal programs and stakeholders cultivate and harness “open geospatial ecosystems.” Themed ***Building Ecosystems for Supporting Federal Data Stewardship***, FedGeoDay 2026 will feature more content than ever and more ways for attendees to engage and shape the dialogue. Organizing team members including **[Eddie Pickle](https://www.linkedin.com/in/eddie-pickle-b67545)** from Snowflake will answer your questions and tell you more about the conference, including the hands-on workshops on day two and the first-ever FedGeoDay "unconference," which gives the power to shape the discussion back to the attendees in the spirit of open source. FedGeoDay's planning team also includes GeoDC's very own Chad Blevins and Puneet Kollipara. FedGeoDay is April 22–23 in Suitland, MD at the Census Bureau HQ, just off the Green Line. Check out the website for an at-a-glance view of the [program](https://www.fedgeo.us/program), keynoted by **[Denice Ross](https://www.fedgeo.us/denice-ross)** (former U.S. Chief Data Scientist, now at Federation of American Scientists). Get your **[early-bird tickets](https://www.eventbrite.com/e/fedgeoday-2026-tickets-1980250906769)** by this **Friday, 4/10**. **Agenda** * **6–7 pm:** Happy Hour / Networking \*Sudhouse has great HH specials! * **7–8:30 pm:** Announcements / Events /Jobs-Internships and FedGeoDay Preview Presentation Happy Spring, and we look forward to seeing you at Sudhouse DC! If you're interested in presenting for the May GeoDC event, we've got a few spaces remaining. Please complete an [interest form](https://docs.google.com/forms/d/10Yj1-BOBXHqtoepJNW2X1WRzmdMjvbBPB8F5fgu5Lhk).

Adam Sandman will be showing how you can use Kiro together with an MCP server to pull software requirements, designs and tasks from a project management repository (Spira) using an MCP server. From there we can use the power of agentic AI to create an MVP app, deploy and test it.

\-\-\-\-\-\- [REGISTER FOR THE EVENT HERE (ON LUMA)!](https://luma.com/g7s8n8sz) \-\-\-\-\-\- Join us for an evening of collaborative problem-solving as we work on a variety of civic tech projects together. Project needs vary but often include brainstorming, researching, writing, coding, or analyzing data. Check out [our website](https://www.civictechdc.org/projects) for a list of projects which may make an appearance! Meet other civic tech enthusiasts. Learn new skills. Contribute to a project to improve a local civic issue. **All are welcome and collaboration is encouraged.** Laptops are recommended but not required. **Where do I register?** To better serve our growing community, we’re transitioning our event registrations to Luma! **We still love Meetup** Meetup has been an incredible platform for us to build and connect with our community. We’ll continue sharing upcoming events there so that new people can find us, but Luma will be our primary registration platform moving forward. **Why we're making the switch** Meetup’s registration system has some limitations, and we need more flexibility to manage sign-ups and engagement. \-\-\-\-\-\- [REGISTER FOR THE EVENT HERE (ON LUMA)!](https://luma.com/g7s8n8sz) \-\-\-\-\-\-

[https://ridewithgps.com/routes/46073614](https://ridewithgps.com/routes/46073614) 18.4 miles. Toilets are at the beginning, middle, and end of the trail. **Picnic stop will be in Meadowbrook Local Park at 12.5 miles.** Celebrate (Mother) Earth Day! This route was originally conceived as part of the Takoma Park Earth Day celebration in April 2024. We are happy to ride again for this year's Celebration. We will e-bike from Peirce Mill in Rock Creek Park through Takoma Park, and then on to the Sligo Creek Trail. From Sligo Creek we head west past Holy Cross Hospital and through the Forest Glen neighborhood. We then turn south on to Rock Creek Trail. Earth Day Festivities with occur in Sligo Creek Stream Valley Park, approximately 6 miles into the ride. Face painting, snow cones, art activities and exhibits promoting a variety of environmental and sustainability causes will be there! The picnic stop is at Meadowbrook Local Park, 12.5 miles into the ride. **Please charge your batteries. The ride is on asphalt and often flat but we will encounter some hills. As usual, non-assisted bikers are most welcome.** Bring snacks, lunch and plenty of water. Pump tires, check brakes and charge your battery. Consider packing a spare tire tube. Check weather and dress appropriately. As always, this is a self-guided event. **We recommend you download the Ride with GPS route.** [https://ridewithgps.com/routes/46073614](https://ridewithgps.com/routes/46073614) The group stops a few times for slower riders to catch up. The distance will be 18.4 miles or shorter any time you are fully satisfied with biking for the day. For the E-bike Lovers group to be successful, we need to grow our membership carefully. Please feel free to invite other E-bike lovers, spread the word, and let's have fun. **Free Ride With GPS for E-Bike Lovers** Membership of the Ride With GPS E-bike Lovers club is now free as www.ebikelovers.com is generating sufficient income from ads to cover the costs. Here is the link to activate your free membership: https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN **More information about using GPS files:** https://ebikelovers.com/2021/03/15/download-our-trails-and-never-get-lost/ **More information about e-bike ranges:** https://ebikelovers.com/2020/12/31/e-bike-longer-and-happier-15-smart-strategies-to-reduce-your-e-bike-range-anxiety/ **DISCLAIMER** LIMITATION OF LIABILITY: TO THE FULLEST EXTENT PERMISSIBLE PURSUANT TO APPLICABLE LAW, NEITHER GREGORY MAASSEN, RICHARD CAMER, TRIP COORDINATORS, THEIR AFFILIATES, FAMILY AND FORMER AND CURRENT EMPLOYERS NOR ANY OTHER PARTY INVOLVED IN CREATING, PRODUCING, OR DELIVERING E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS IS LIABLE FOR ANY DIRECT, INCIDENTAL, CONSEQUENTIAL, INDIRECT, EXEMPLARY, OR PUNITIVE DAMAGES ARISING OUT OF A USER’S ACCESS TO, OR USE OF THE E-BIKE LOVERS GUIDES, OUR MEETUP EVENTS, AND THE GPS E-TRAILS. See for full disclaimer: https://ebikelovers.com/disclaimer

🍻 **Post-Event Happy Hour — Tech Fluent** 📅 April 10 \| 🕠 5:30 PM 📍 Gordon Ramsay Street Pizza After a full day of building, learning, and experimenting with AI, join us for a **casual happy hour** to unwind, connect, and keep the conversations going. This is open to: * Tech Fluent attendees * DC Legal Tech Meetup members * AI-curious professionals who just want to join for drinks + conversation No agenda — just good people, good pizza, and a chance to meet others exploring AI across legal, business, and beyond. *** 💡 **Why come?** * Meet others who are actually *doing* something with AI * Continue conversations from the workshop in a relaxed setting * Join even if you couldn’t attend the full event *** RSVP appreciated for the happy hour.

What better way is there to celebrate San Fermin other than at a bar named after the very city of Pamplona (with all set-up, decoration and amenities), where the main fiesta takes place and without heading to Spain?! We won't have the real bulls running around. But we will have real Spanish Drinks to sip on! Pamplona is ornate, bullfight-themed Spanish spot for creative tapas & paellas, plus sangria on tap & cocktails that draws its inspiration from Ernest Hemingway’s travels throughout the Basque region of Spain. It is located in the bustling Clarendon neighborhood, features an innovative take on traditional Spanish fare paired with an extensive sangria program. -Free with RSVP - Huge line up of DJs - For bottle/table service AND birthday specials text 202-368-1878 - Dress Code : we encourage you to dress-up in White and Red - Event is 21+ - We will have specials including the usual suspect Mer-Tini:) -Come one, come all; this is the most friendliest event you have ever attended! - Feel free to invite your friends. They don't necessarily have to be a member EXCERPT ".....The world’s most exhilarating race (yes, with real bulls!)takes place each July in the cramped streets of Pamplona, Spain for a nine-day festival unlike any other. The famous Running of the Bulls in Spain is actually just a portion of a three-part fiesta known as the San Fermin festival. The origin of the Pamplona bull run dates back to the 14th century when local Spaniards began honoring the passing of Saint Ferman. Saint Ferman was dragged to his own death by bulls – so what could be more fitting a tribute than an annual run with the bulls? In his memory, participants take part in a feast day, an ancient fair and a bullfighting event that has become world-famous. The massive party kicks off at midday on July 6 after the launch of the Txupinazo rocket. Locals and tourists come together in a rowdy crowd ready to take on nine days of celebratory drinking and eating. The actual bull run itself includes a half-mile course that winds through four different cobblestone streets of the historic Spanish town. As you might imagine, slow runners are not encouraged to attempt the life-threatening feat of running with bulls. On the mornings of July 7 to July 14, hundreds of anxious spectators dressed in red and white await the sound of the starting rocket – and the lumbering arrival of the bulls. Once the bulls are released, adrenaline-seeking runners sprint down the road for their lives… literally. The enraged bulls show no mercy to those who slip or fall on the course, making this one of the most dangerous running events of all-time. Once the race is completed, traditional bullfighting commences. This allows runners to take a shot at besting the bulls in true matador fashion. By the end of it all, festival-goers accompany each other for a closing candlelight performance of the song “Pobre de Mi.....” METRO & PARKING INFO : Pamplona is half a block from the Clarendon metro station. Street parking might be a challenge. There are parking garages around.

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

The global Azure community is coming together again, and Columbus is officially on the map. View the session lineup and speakers at [Global Azure Columbus 2026](https://coazure.github.io/cbus-global-azure-2026/) On **Saturday, April 18, 2026**, the Azure Columbus Meetup, DevOps Meetup, and Code and Coffee Meetup are hosting our local edition of Global Azure 2026. This is a free, community-driven event packed with learning, networking, and all things Microsoft Azure. Whether you’re building modern cloud-native apps, experimenting with AI agents, deploying containers, automating infrastructure, or just beginning your Azure journey, this event is for you! **What to Expect** * Engaging technical sessions * Real-world Azure architecture & cloud-native patterns * AI, agents, automation, and modern DevOps * Food and drinks (because learning burns calories) * Time to connect with fellow engineers, architects, and cloud enthusiasts **Who Should Attend?** * Software engineers (any language, any stack) * Cloud architects * DevOps engineers * Data professionals * AI explorers * Platform builders * Anyone who loves solving hard problems with great tools If you build, deploy, automate, scale, monitor, or optimize in Azure, you’ll feel right at home. **Why Global Azure?** Global Azure is a worldwide community event where Azure user groups host learning sessions on the same day across the globe. It’s grassroots. It’s technical. It’s practical. And it’s powered by people who genuinely love sharing what they’ve learned. And yes, it’s free to attend!

**The Data-Driven Brand: Using Analytics to Shape Perception** Can you use analytics to improve tacos? This being CBUSDAW, we think the answer is probably “yes”, but we’re not sure how to implement or test this theory. For our April meetup we’ve got Sara Kear, CMO of Condado Tacos, to investigate this delicious question. Sara will explore how she blends quantitative data and qualitative customer feedback to shape brand positioning and drive business decisions. We all know that marketing and analytics go way beyond attribution. Sara will show how Condado uses customer insights to inform product and pricing strategy. She’ll also highlight how Condado leverages customer feedback at scale to influence operational priorities, positioning marketing as the voice of the customer across the organization. In the last 12 years Condado has gone from one location in Columbus to 52 locations across 10 states, so we’re guessing there’s more to that growth than really good guac (though the guac probably helps). Ultimately, this talk focuses on the intersection of art and science—using data to inform creativity and build a brand that resonates with customers in a measurable way. **About Our Speaker** Sara Kear is Chief Marketing Officer at Condado Tacos, where she oversees brand, restaurant design, menu and pricing strategy, off-premise including catering, and customer data strategy. Since joining in 2021, she has helped grow the brand from 19 to 52 locations while building a data-driven marketing organization focused on loyalty and customer insights. Condado has since been named to the Inc. 5000, recognized as Breakout Retailer by Chain Store Age, and consistently ranked among FastCasual’s Top 100 Movers & Shakers. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

We're bringing the community together for a casual happy hour with ServiceNow-themed trivia, food and drinks, and great conversation. Details coming soon - for now, save the date and plan to join us for connection and fun.

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).