Machine Learning

New Columbia Swing is your source for swing dancing and learning. Take our free beginner lesson, offered every week, followed by a fun social dance. Dance is $15 at the door or $12 if you preregister at https://newcolumbiaswing.org/register. $10 for students/military. **Is this your first time dancing with us? Register with the code FIRSTTIME for a 100% discount!** **SCHEDULE:** Join us at 8pm for a drop-in beginner lesson (no partner required). The main social dance starts at 9:00pm! Any questions or concerns? Email us at info@newcolumbiaswing.org.

Discover the path to stress management, life's tranquility, and self-improvement through Heartfulness Meditation. Embrace relaxation, meditation, and emotional detoxification practices to unlock your best self. Join our free sessions every Wednesday at 730 PM at MD. Experience the profound benefits of these simple yet powerful practices. Commit to a few months of meditation and witness the transformative impact firsthand. We eagerly await your presence at these enlightening sessions.

[Book Your Classes by Clicking This Link! ](https://crowndancestudio.com/group-classes/) Mid-week is for the experts with **Level 3 Bachata (7:45 PM)** and **Level 3 Salsa (8:30 PM),** followed by a **Social Dance Party at 9:15 PM.** These advanced classes challenge experienced dancers with intricate footwork and styling, emphasizing the joy of high-level performance. **The evening costs $25 for the classes and social**, providing an inclusive space where advanced students can sharpen their craft and immediately practice their moves with peers. 7:45 Bachata (Level 3) 8:45 Salsa (Level 3) $18 for 1 Class $22 for 1 Class + Social $25 for 2 Classes + Social $10 for Social Only

This epic event will run for two weeks, I want to create a MeetUp giving others, like myself, a way to meet new friends and get out there for any day you have available. Each day will be a duplicate event, giving everyone the ability to sign up for the day they have free. I will not be at every event as I work three days a week, but I will put in the messages the days I'll be there. The Metro Smithsonian is a great place to meet since it's right at one of the two entrances. The only two entrances are at 12th and 4th and Jefferson. If you want to go to one or several of the days just hit the attend and message those who are also planning on attending that day. You can coordinate the times as well. Let's make new friends and experience the 250 anniversary of our country.

This event is for volleyball beginners who want an opportunity to practice, play, and gain experience in a relaxed, low pressure environment. Whether you're trying volleyball for the first time or still developing confidence in the basics, you'll find this event welcoming, supportive, and beginner-friendly. Level: Beginners Cost: Free Field Type: Outdoor grass Format: 6x6 The focus will be on getting 3 touches on the ball, learning through play, and having fun with others who are also new to the game. Come enjoy some casual volleyball, meet new people, and have fun! **Smiley Social documents:** 1. [Group Rules](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

I try to arrive by 6:45! Arrive before me? There will be a reservation under Connor L. You can either ask the host in Sonny's or look for the silver table tent with my name written in green tape. -- Join us for some focused writing time. All writers and all experience levels are welcome and don’t worry, no one will see what you've written. This session is about getting your writing done and meeting other writers in your area. Bring your writing materials (such as a notebook or a charged laptop - outlets are limited.) And if you'd like to tune out other patrons at Sonny's or any overhead music, we recommend bringing headphones or earplugs. -- BEING LATE IS OKAY: Just show up and get settled, then check-in with me after the session. If you were on time, please be willing to make room for the friendly latecomer. Happy writing and I look forward to seeing you! When you show up, I will be sitting at a table with folded "Shut Up & Write" table cards. Say hello to everyone, grab a drink, and get your writing tools ready. Once you’re all settled, take some time to chat with your fellow writers. Once everyone’s arrived, I will lead quick introductions and then set the timer for our quiet and focused writing session. Afterward, we’ll have time to chat and get to know each other. We often talk about our successes and challenges as writers. If you don’t have time to stick around, no worries! -- **A note about the format** We don’t host critiques or readings. These events are a safe space for writers of all skill levels and genres to work on their craft, so no one will read or critique your writing. For our full event schedule, visit [https://shutupwrite.com](https://www.shutupwrite.com). -- **Other Important Details:** **WiFi name/password:** Name - Sonny's/Doubles Guest; Password - pingpong **Travel / Parking info:** Sonny's is on the D40/D4X bus line and about a 15 minute walk from either the Columbia Heights or Georgia Ave/Petworth metro lines. There is limited on-street parking. **Venue Guidelines:** Please thank our hosts by purchasing something.

Join the event where FXA champions are made!! If you’ve already learned the basics of volleyball and want to keep improving your skills while having fun, this event is for you! **Skill Level:** Advanced Beginner (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details). **Reminders** 1. Attendance: We’ve noticed that the waitlist is growing, so please make sure your name is on the Going list if you plan to play. Our number of nets is limited so this helps avoid too many rotations. If your name is on the list but you don’t show up, it will count as an absence according to Smiley Social rules. Please update your RSVP at least 12 hours in advance if your plans change. 1. Injuries: Play safely and be mindful of others on the court. Respect positions and avoid risky moves that could lead to injury. If you’re not sure the ball is yours, call it before going for it to avoid collisions. 1. Game Rules: Let’s follow the basic volleyball rules, especially the three-touch rule so we can play properly and improve as a team! 1. Waitlist: The waitlist is not first come first serve. We prioritize regular attendees, and will fill empty spots with new faces closer to the event date. **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/)

Call 202 797 9826 for more information and to register. Walk-ins are welcome! Refreshments are served. Your negative emotions can significantly impact your life and your relationships. Sometimes couples and friendships break apart simply because people couldn't manage their own negative emotions, such as anger, worries, anxiety, or depression. In this meeting, you will learn where these negative emotions come from, for you, and what you can do to start healing from them. YOU CAN DO SOMETHING ABOUT IT! And you can do it without medications, without suppressing these emotions inside yourself. You don't need to leave your loved ones. Come to this meeting and learn the answers. Our doors are open. **Refreshments will be served.** This group is created by the Dianetics & Scientology life improvement information center in Washington, DC.

Learn to manage stress and achieve self-growth through simple relaxation and Meditation. Heartfulness Meditation is a simple, modern, methodical approach to meditation. Rather than homing in on your breath or repeating a mantra, you simply focus inward, on your heart, to cultivate inner strength and serenity. Heartfulness meditation is gaining traction in recent years. It focuses on the heart, allowing individuals to connect with themselves on a deeper level, and ultimately achieve peace, relaxation, and clarity. It is a practice that encourages patience, self-compassion, and acceptance, helping cultivate a deeper appreciation for the present moment. This practice is offered with love and at no cost

Today we are Steve's Lab. RSVP and you'll be sent the location. It's in Silver Spring. ***Join us for an evening in an electronics lab where we will attempt to run clean scans of graphene and gold samples, and then clean up that data with post processing.*** This is a high sensitivity experiment, and we do not plan on being successful so early. But we've had promising results lately - so we will be putting in the time. We are NOT meeting at our usual location, but rather at Steve's house/lab. If you RSVP, you will get a DM with the address but it's located in Silver Spring. We will attempt full, clean lab - clean tip repeated scanning tests to see what we can learn and improve. We will experiment with online attendees, but if all possible showing up in person is strongly encouraged. Online join link is: - [https://meet.jit.si/mocomakers](https://meet.jit.si/mocomakers) Our community is building (and documenting for other teams) how to build a scanning tunneling microscope using a mix of common and 3D printed parts. This will allow us to scan and visualize a single atom - an ambitious we are doing over the course of a few months. The MoCo Makers community is one of the most innovative and competent groups in Maryland, and we've done everything from [publishing cancer research](https://pubmed.ncbi.nlm.nih.gov/38136356/), to [launching products](https://www.kickstarter.com/projects/gotim/cozy-curvy-multi-contour-pillow), [winning grants](https://covidinfocommons.datascience.columbia.edu/awards/2014255), and inspiring thousands. Now our biggest challenge yet has appeared. We are building a Scanning Tunneling Microscope, that will allow us to scan and visualize single atoms. To get a better idea of what we are doing, see our reference project here: [https://www.youtube.com/watch?v=7N3OqTEq08g](https://www.youtube.com/watch?v=7N3OqTEq08g) All starting CAD, code, and reference files should exist. However, let's be the first Maker community to document the build process and share it with learners around the world. We will be publishing our work here -[ https://hackaday.io/project/202816-qt-panda](https://hackaday.io/project/202816-qt-panda) If you need a ride, let us know.

Join us for a special post-AWS DC Summit **“Meet the Community” evening** with **AWS DMV User Group** with special guest, AWS Principal Developer Advocate, Aaron Hunter! This casual networking session is a great way to connect with fellow builders, cloud enthusiasts, and AWS community members after the AWS DC Summit. Whether you’re a student, developer, architect, or just curious about cloud, this is a perfect space to meet like-minded people, exchange ideas, and grow your network. Expect light conversations, meaningful connections, and a relaxed atmosphere as we bring the community together after the big event. 📅 **Date:** July 2, 2026 🕠 **Time:** 5:00 PM – 8:30 PM 📍 **Venue:** Amazon HQ2, WAS19 2.103 + 2.104. 525 14th St S, Arlington, VA 22202 Looking forward to seeing everyone there and discussing the summit with great energy and conversations! Please RSVP with the same name as is on your state-issued ID, which will be required to check in at security.

Are past negative experiences hindering your ability to live a happy life? Are you ruled by negative emotions? Possibly you have a thought or emotion that hangs around for days and you just can't shake it. What is all this stress, anxiety, depression, acting out and self doubt? It's just crazy! It's not the real you. You **can** find out what is at the root of all this. There **IS** technology to relieve the pain of a lifetime. Areas you can be helped with: Control of unwanted emotions Lack of confidence Grief Anxiety Anger management Creating ideal relationships Depression Memory and more... This is an in-person class that can start you on the way to a better life, more confidence and less negativity. All the happiness you have lies within you. Let's find it! We only use natural proven techniques, called Dianetics; no drugs or labeling. This Zoom webinar is an introduction to proven techniques from the book "Dianetics, The Modern Science of Mental Health". This group is sponsored by the Dianetics and Scientology Life Improvement Center of Washington, D.C. Call 202-797-9826 with any questions and to register! You are welcome to arrive 15 minutes early for refreshments!

**THE POWER OF THE SUBCONSCIOUS OVER YOU** You are welcome to arrive 15 minutes early for refreshments! At the lecture "The Power of the Subconscious", the speaker will clearly and understandably explain topics such as: * What is the exact definition of the Subconscious Mind? * How does it inflict unwanted feelings and anxiety in you? * What determines how much pressure it exerts on a person? * What exactly is the goal of the subconscious? This is not just a lecture where you sit quietly and listen. It's interactive and LIVE, so you can ask questions at any time. And the most important topic: **HOW DO YOU TAKE CONTROL OF YOUR SUBCOUNSCIOUS!** This group is sponsored by the Dianetics Life Improvement Center.

Most people use LLMs by feel: ask a question, read the answer, decide whether it “seems good,” and move on. That works for casual use. It does not work when you are building software, automating workflows, writing important documents, or relying on AI for anything that needs to be repeatable. In this talk, we’ll look at how to improve and evaluate the inputs and outputs of LLMs using practical measurement techniques. We’ll cover how prompt changes affect results, how to compare outputs, how to build simple evaluation sets, and how math-based methods like similarity scoring can help you move beyond guesswork. This will be beginner-friendly, so even if you don't know anything about AI, you should get something out of it. However, this will be a little more technical than our intro talks. You do not need to be an AI researcher, but programmers and technically curious attendees will get a lot out of it. We’ll cover: * Why “it looks good” is not enough * How to improve prompts by changing the input, context, and constraints * How to compare LLM outputs more systematically * Basic evaluation techniques for accuracy, consistency, and usefulness * How embeddings, cosine similarity, and scoring can help evaluate results * Where automated evaluation works — and where humans still need to stay in the loop By the end, you’ll have a practical mental model for treating LLMs less like magic and more like systems you can test, measure, and improve. 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.

**Practical Curiosity: Learning from Everyday Data** How do we actually get better at utilizing our day-to-day data? Fancy dashboards and complex models might look nice and draw attention, but that’s not where most of us spend our time. In fact those shiny outputs frequently sit unused, while the real insights are drawn from the analyst’s daily practice. Sometimes it’s as simple and as powerful as noticing that a segment is shrinking, a channel is underused, or certain links keep getting all the clicks. There’s many different places that the spark of insight can come from, but you have to keep your head in the data and know where to look. In this session, we’ll explore real-world examples of how segmentation, testing, and click behavior can uncover practical digital marketing opportunities. You’ll leave with inspiration for your own use cases, along with a few simple ways to ask better questions, spot meaningful patterns, and make smarter decisions without overcomplicating it. **About Our Speaker:** [Elaine Armbruster](https://www.linkedin.com/in/elainearmbruster/) is a Director of Digital Experience at the [American Diabetes Association](https://diabetes.org/), where she focuses on using data and insights to create smarter, more effective digital experiences. A lifelong Columbus resident, she has built her career in email marketing and the broader digital user journey, and is finding she most enjoys working in the messy middle where systems, data, and big ideas don’t quite line up yet. 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)

If you enjoy knitting, crocheting, working with yarn, this is the group for you. Meet new friends, bring your projects, learn from others.
We normally meet a few times a month during the week from 6-8pm. We will occasionally meet on weekends during daytime hours.

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

NFT's are here to stay folks! This is a group for like minded people interested in understanding, leveraging, using, creating for, profiting from, trading too i suppose, NFT's.. everything around them, complexity, fear and exploits, best practices and more. **PLUS** This group will talk AI ART tools, techniques, artists, video, audio, prototypes and more in the AI assisted production space- ART specifically, but we can get into any aspect of some of the cooler things happening in AI in general.

We're planning a hands-on technical session focused on building AI solutions in ServiceNow - think skills, agents, and real-world use cases. If you’re curious about AI on the platform, RSVP now and stay tuned for more details. Let's build together!