MapReduce

♠️ Last Saturday Spades in Silver Spring! ♠️ 🌟 In Downtown Silver Spring 🕕 6:00pm to 10:00pm 😀 **Posted in multiple groups. So, expect a nice crowd.** 🚗 Nearby Parking in Wayne Ave. Garage 🍷 Alcoholic beverages are available! Please support the business by purchasing food/drinks. ✅️ No partner needed! Get matched with a partner onsite. All skill levels are welcome. ❤️ Come hang out with a friendly and welcoming group. Meet new people and have a great time! 🌟 The fun starts at 6:00pm! RSVP today.

**​This is a relaxed but intentional Saturday hangout for young entrepreneurs.** ***Note:*** *Only 10 spots are available to RSVP on Meetup, but the event capacity is **40 people total**. Please join the waitlist and I will approve additional attendees until we reach the 40-person limit.* ​We’ll meet at MLK Library for donuts, co-working, and structured conversations. ​Instead of sharing in front of the whole group, we’ll rotate through casual chats where you can: • Talk through a business blocker or something you want to improve • Get perspective and ideas from others on how to move forward (whether that’s getting through the blocker or executing the improvement) We won’t just leave with ideas - we’ll actually start working on the thing you discussed, using the perspective and ideas you received to begin moving through the blocker or executing the improvement. ​Whether that’s: – Fixing your landing page – Outlining your launch – Sending the email you’ve been avoiding – Or clarifying the path forward on something you’ve been stuck on **​You’ll leave having made real progress.** No pressure. Just entrepreneurs helping each other move forward - and then actually putting in the work. ​Bring: • Your laptop • One thing you’re ready to improve • An open mind ​I’ll bring the donuts ;) **​If you want to build things with people - not alone - this is for you.**

Danceintime runs Cuban Salsa Classes & Social Dancing Every Saturday, all year-long. Come at 1:15 pm to sign in. Stay till 4 pm. Some of us go out for coffee or a bite to eat afterwards and everyone is welcome! $15/person. Cash, PayPal, Venmo, Apple Pay, or Card accepted. Chevy Chase Baptist Church; 5671 Western Ave. NW; Washington DC 20015. NOTE: Enter through back corner door of the church. Danceintime classes are great fun. The dance moves are beautiful, fun, and our class creates a bonded community... Check it out! Class will be held every Saturday in December....celebrate the holidays with dance! For more info: danceintime.com/classes Questions? Contact Barbbernsteintalks@gmail.com

Welcome to Pickup Sports (Adult League)! Join our community! To register for this game, download our app on the App Store or Play Store and sign up. More players signed up on the app. App Store: https://apps.apple.com/us/app/pickup-sports-adult-league/id6739766176 Play Store: https://play.google.com/store/apps/details?id=com.pickup.sports We host games for all sports in every city. Please check our app for complete game details and availability. Keywords: Soccer Basketball Tennis Volleyball Baseball Softball Football Rugby Hockey Golf Swimming Track and Field Cycling Wrestling Boxing Karate Judo Table Tennis Badminton Cricket Lacrosse Pickleball Rowing Sailing Skateboarding Surfing Snowboarding Skiing Spikeball Rock Climbing Martial Arts Dance \*\*\*Important: Do not rely on this Meetup event for final game details. All game information, including exact locations, start times, player counts, live status updates, etc. are available exclusively in the Pickup Sports App.\*\*\*\*

**L.A.M.A. Gaithersburg has the pleasure of inviting you to their 14th Anniversary party weekend!** ***\* Meet & Greet Friday 3/27/26 @7pm*** ***\* Main Event Saturday 3/28/26 @1-6pm*** (both days at the American Legion Post 86) **Great food \| Latin DJ \| 50\-50 \- Raffles \| Vendors \| Games & More\.** **Let's start the year with the best attitude at the first Anniversary Party of 2026 in the NE Region.** **Cash-only bar with ATM on premises.** (See the full flyer below for hotel information)

Welcome to Pickup Sports (Adult League)! Join our community! To register for this game, download our app on the App Store or Play Store and sign up. More players signed up on the app. App Store: https://apps.apple.com/us/app/pickup-sports-adult-league/id6739766176 Play Store: https://play.google.com/store/apps/details?id=com.pickup.sports We host games for all sports in every city. Please check our app for complete game details and availability. Keywords: Soccer Basketball Tennis Volleyball Baseball Softball Football Rugby Hockey Golf Swimming Track and Field Cycling Wrestling Boxing Karate Judo Table Tennis Badminton Cricket Lacrosse Pickleball Rowing Sailing Skateboarding Surfing Snowboarding Skiing Spikeball Rock Climbing Martial Arts Dance \*\*\*Important: Do not rely on this Meetup event for final game details. All game information, including exact locations, start times, player counts, live status updates, etc. are available exclusively in the Pickup Sports App.\*\*\*\*

**NOTE TO PROSPECTIVE RIDERS; RIDE MAY BE CANCELLED IN THE EVENT OF LOW INTEREST/SIGN-UP.** [https://ridewithgps.com/routes/45899232](https://ridewithgps.com/routes/45899232) 26.1 miles. Lunch is at the Great Falls overlook 18.2 miles into the ride. There are toilets at Great Falls and Fletchers' Boathouse. We will e-bike from Glen Echo Park in Maryland to the majestic Great Falls. We will be biking on the Capital Crescent Trail, the C&O Canal pathway, and McArthur Blvd with separate biking lanes. This tour captures the essence of adventure and natural beauty. We will be meandering alongside the serene Potomac River and the C&O Canal, offering E-bike Lovers an unparalleled opportunity to immerse themselves in the lush landscapes that define this region. Glen Echo Park, with its rich tapestry of cultural and artistic heritage, serves as the perfect prologue to a journey that gradually unfolds into the wild, untamed beauty of the Great Falls. The route is just over 26 miles on gravel and asphalt. The gravel is compact. If you don't like the gravel on the C&O Canal pathway, this is not your route. Entrance to the Great Falls National Park is for free as we enter from the C&O Canal. We park at the large parking lot off Oxford Street, NOT at the smaller lot at McArthur Blvd. Please bring snacks, lunch and plenty of water. FYI: Ride With GPS E-bike Lovers Club membership is now for free as [www.ebikelovers.com](http://www.ebikelovers.com/) generates 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](https://ridewithgps.com/auto_approve/Club/6746/Zwa5jhttF5mJrFbN) The group stops a few times for slower riders to catch up. **REMEMBER:** This is a self-guided event. This event empowers each participant to take the lead, as there are no designated bike leaders within E-bike Lovers. We all embrace the role of leaders in this self-guided experience. Please RSVP only if you are coming so we know how many E-bike Lovers will participate. We enjoy a nearly 100% RSVP success rate. Thank you so much for your help! As usual, non-assisted bikers are most welcome. DISCLAIMER LIMITATION OF LIABILITY: TO THE FULLEST EXTENT PERMISSIBLE PURSUANT TO APPLICABLE LAW, NEITHER GREGORY MAASSEN, NATHAN MERRIS, 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 the full disclaimer: https://ebikelovers.com/disclaimer

*Location Change * Since Freedom Plaza is under construction, we will meet at the plaza in front of The International Trade Center near the National Children's Museum (on Pennsylvania Ave). We'll begin with going over a few drills (varies week to week). The skills we drill will be for the first 30 minutes. For the second half, we will casually skate down the bike lanes on Pennsylvania Avenue from the plaza to the U.S.Capitol and stop at 3rd St. and then skate back the same route. This route is about 2 miles in total and is perfect for those who are new to skating in the city but feel comfortable on skates in a parking lot or roller rink. This is also great if you wish to start with shorter routes to increase your physical fitness or stamina for some of the other routes. This is an excellent opportunity to prepare to skate with others on the road. You will also get to meet skaters who will arrive for the Intermediate and Advanced skate routes following the introductory skate. This is great training to feel prepared for the Tuesday Night and Friday Night Skate! Route: http://www.gmap-pedometer.com/?r=7653831 Inline skates (rollerblades), roller skates (quads), bicycles, unicycles, skateboards, longboards and other similar modes of transportation are welcome to join. Helmet and pads are required. Skate at your own risk.

King Soul delivers old-school Southern Soul with original songs, powerhouse vocals, and a killer horn section. Featuring all-star musicians from top DC bands and boasting 30+ Wammies and Austin Music Awards, they’re a premier draw at clubs and events. Bring a chair. We will sit near the front on the right facing the stage.

Welcome to Pickup Sports (Adult League)! Join our community! To register for this game, download our app on the App Store or Play Store and sign up. More players signed up on the app. App Store: https://apps.apple.com/us/app/pickup-sports-adult-league/id6739766176 Play Store: https://play.google.com/store/apps/details?id=com.pickup.sports We host games for all sports in every city. Please check our app for complete game details and availability. Keywords: Soccer Basketball Tennis Volleyball Baseball Softball Football Rugby Hockey Golf Swimming Track and Field Cycling Wrestling Boxing Karate Judo Table Tennis Badminton Cricket Lacrosse Pickleball Rowing Sailing Skateboarding Surfing Snowboarding Skiing Spikeball Rock Climbing Martial Arts Dance \*\*\*Important: Do not rely on this Meetup event for final game details. All game information, including exact locations, start times, player counts, live status updates, etc. are available exclusively in the Pickup Sports App.\*\*\*\*

Welcome to Pickup Sports (Adult League)! Join our community! To register for this game, download our app on the App Store or Play Store and sign up. More players signed up on the app. App Store: https://apps.apple.com/us/app/pickup-sports-adult-league/id6739766176 Play Store: https://play.google.com/store/apps/details?id=com.pickup.sports We host games for all sports in every city. Please check our app for complete game details and availability. Keywords: Soccer Basketball Tennis Volleyball Baseball Softball Football Rugby Hockey Golf Swimming Track and Field Cycling Wrestling Boxing Karate Judo Table Tennis Badminton Cricket Lacrosse Pickleball Rowing Sailing Skateboarding Surfing Snowboarding Skiing Spikeball Rock Climbing Martial Arts Dance \*\*\*Important: Do not rely on this Meetup event for final game details. All game information, including exact locations, start times, player counts, live status updates, etc. are available exclusively in the Pickup Sports App.\*\*\*\*

Hey Poetry Lovers! This group is on a roll. Here’s the gist: We meet at the **Capital One Café in Chinatown** from **12pm - 2pm** every other week. For enrichment, we start by reading and reflecting on a **“published poem”**, suggested by someone in the group. No advance preparation is necessary. But feel free to check out some of the poems we’ve read [here](https://docs.google.com/spreadsheets/d/e/2PACX-1vSyE_wCLQCPHRrKmN5F9tOIeeRQUZESxjRXGVBoCF2uU8Gm0_d0uECiCBCQXEy6ksxfsBOhtRIOpW3T/pubhtml?gid=0&single=true&widget=true&headers=false%22%3E%3C/iframe%3E). Or submit suggestions for future meetings [here](https://docs.google.com/forms/d/e/1FAIpQLSexGc2Z2Kp6bZW0D3_hfJ7NUUkfNHf7TXX-43FglCeBd9EF2Q/viewform?usp=send_form). Next, we **share our work and offer feedback**. Depending on attendance, everyone gets \~10 minutes to use as they like. (No need to share, though; you’re welcome to come even if you prefer just to listen.) We maintain a **Discord server** to help share our work and communicate outside our bi-weekly meet-ups. If you haven’t used Discord before, take a moment to download it and create an account before arriving. When we meet you on Saturday, we will add you to our server, the “DC Poetry Workshop”, and can help you navigate the app if you have questions. Finally, if you plan on sharing a poem, consider how you will do so. Some options include: * Print 5-10 copies to distribute in person * Take and share screenshots in the Discord chat. * Copy the poem into a google doc, change sharing settings to “anyone with link”, and copy the google doc link into the Discord chat. Most importantly, we’re excited to meet you! Catch you on Saturday, Diego / Ian / Cayden / Nate / Otasha / Lia / An

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.

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ). This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join 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: Type Annotations with John Cassidy 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

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. *** Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ).

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

This is an in-person meeting. At this meeting you will get answers to depression and anxiety. Find out the source of them and how to get rid of them. Did you know that unwanted emotions like anxiety, depression, unhappiness, loneliness, hopelessness, anger, fear, or feelings of irritation don’t just fall on you for no reason. They are not random occurrences that simply happen to people's minds. They are definitely not due to a chemical imbalance in your brain from some nebulous chemical reaction "by chance". Your negative emotions are the symptoms of the painful experiences that you have which are not healed, and which are still affecting you. The effects of these painful experiences are exacerbated by the pressures or difficulties of the other problems in your life. Come to our Meetup, where we can introduce you to some of the knowledge, tools and techniques of the breakthroughs in the field of the mind that we can apply to this ever important area of life. Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is created by the Hubbard Dianetics Foundation of Central Ohio and Church of Scientology of Central Ohio.

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.