Statistical Modeling

**SUBSCRIBE TO [THE MAILING LIST](https://torontorationality.beehiiv.com/). EVENTS ARE NO LONGER POSTED HERE.** ​Arguing about important things doesn’t usually lead to people changing their mind. Double Crux is a technique for making discussions more productive and understanding the actual reasoning of those who disagree with us. Sometimes it even helps to better understand the foundations of your own beliefs. Together, we'll learn about [Double Crux](https://www.lesswrong.com/posts/ya59PtGeYnCG25eWn/double-crux-in-a-box), and then break into pairs with someone we disagree with to practice finding out why our views are different and what might change our minds. ## Location Enter the Mars Atrium via University Avenue entrance. We'll meet at the food court in the basement. I'll be wearing a bright neon yellow jacket. ## Detailed Directions to the Food Court Enter from University Avenue and walk east until you see escalators. Take the escalators down. The food court is to the east of the escalators. If you are lost/confused, ask a security guard to direct you to the food court. [This event is cross-posted from LessWrong.](https://www.lesswrong.com/events/wuMwSJJEKZHfccoRs/toronto-acx-meetups-everywhere-spring-2025)

Join your community of fellow Intuitives and MBTI nerds for a casual evening of engaging conversation. We get together every second Sunday – with a mix of regulars and new friends. There is no fee to attend, though we ask that you support the venue by ordering something to eat or drink. **Feel free to contact event host B. via Facebook/Meetup messenger, or text/call 416-712-8635 for directions**. About the venue: The Pint Public House Nearest Subway: Union Station Map / Directions: https://maps.app.goo.gl/G5GfXDSQXeifJ5ot5 We make an effort to find pubs that are quiet and introvert friendly, with a section to ourselves. We make no effort to muffle our extroverts, but should they get out of hand, our resident INTJ will use their death stare, to pull them back in line.

Join us for another relaxed Creative Sundays painting session. This is a calm, social hangout where we spend a couple of hours painting together in a small group setting. No experience is needed, and there’s no formal instruction, just a shared creative space where everyone works at their own pace. **All supplies will be provided. A $25 materials fee will apply to cover the cost of supplies.** **💰 Payment details:** Email: larhtyfarh@gmail.com Note: Creative Sundays + Name You’re welcome to follow one of the inspiration ideas provided or paint something completely your own. Spots are **confirmed once payment is received**, as supplies are prepared ahead of time and space is limited. 📍 **Location** Midtown Toronto (Yonge & Eglinton area) The exact address will be shared with confirmed attendees. Looking forward to another cozy Creative Sundays afternoon together.

We are back after a well needed break. This time we are staying in the city for another cafe hopping event. Lets meet outside Queen’s park subway and venture into different directions of downtown and maybe Yorkville. Detailed map itinerary to follow closer to the date. I will let cafes know that we are coming but some cafes can be small or have no washrooms so please plan accordingly and drink responsibly. Haha. Its $2 event to cover the Meetup fee. You can pay using this link: https://buy.stripe.com/bJe00j7KXf3if8caTsdZ605 Thanks and see you all.

Salsa Sunday Social • Beginner friendly • 4 PM lesson / 5 PM social • Ajax (near Ajax Go Station & Hwy 401) [Grab your spot here](https://www.sapphenix.com/event-details/salsa-sunday-social-reset-2026-03-29-17-00)

This group is for badminton enthusiasts who are passionate about exploring the connections between metabolism, energy, and exercise. We are welcome beginner plus, intermediate and advance level players looking to improve your skill or a seasoned player seeking to optimize your performance on the court, this group is for you! Join us for friendly games. This badminton session is a weekly event and it is followed with dinner together but it is optional. Since we have 3 courts and allowed the maximum of 24 players so that everyone signs up for this event will be placed on waiting list FIRST then will be moved to the joining list on WEDNESDAY MORNING. Court fee: It will be informed at the comment section by 4pm. Cost per person is either $162 (for 3 courts) divided by the number of players attended OR $108 (for 2 courts) divided by the number of players attended. My email address will be provided at that time for etransfer.

Let’s bundle up and brave the cold with a winter stroll at High Park. After that, depending on how hungry (and frozen) we are, we can warm up at one of the cozy cafés or restaurants along Bloor. Hopefully, we’ll end the day feeling full, happy, and proud of ourselves for embracing winter ❄️😊 What to wear & bring: Dress in warm layers, a cozy winter jacket, hat, gloves, and a scarf—bonus points for thermal socks! Waterproof boots with good grip are a must. Bring a small backpack with water, lip balm, tissues, and maybe a thermos with something hot to sip along the way 💵 Cost: $2 (cash or e-transfer to mech.mandeep@gmail.com)

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **Join the Toronto City Brunch Club and make new friends!** Each meetup brings together 4–6 people for casual conversations over brunch. We use the Groupvibe platform to facilitate the meetup and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com/](https://groupvibe.com/) We’ll share the exact location of the upcoming meetup the night before only if you have bought a ticket or membership plan. **Why this works:** \* Smaller groups make real conversations easier. \* Discover new restaurants in your city, together. \* Curated lunch venues with good food and vibe. \* If you hit it off with your group, there’s plenty of time to hang out afterwards. **Note:** RSVPs on Meetup don’t reflect total attendance. Many attendees register directly via our website. The event on [Meetup.com](http://meetup.com/) is only a placeholder. This meetup is organized by Groupvibe, a small team passionate about helping people form meaningful friendships offline.

Join us for a fun afternoon of speed dating! We have events for ages 35-45 and 45-55! **Tickets here:** https://www.eventbrite.com/cc/toronto-downtown-speed-dating-events-4800164

We experience and produce humour through the memes we spread and the inside jokes we share with friends, and we even use it when facing life’s most difficult challenges. Humour can help us bond, cope, and rethink our assumptions. But what makes something funny? Why do humour and the laughter it produces play an important role in our culture? One answer is that humour can help break down barriers and bring people together. As Victor Borge once said, “Laughter is the shortest distance between two people.” Humour can also be used as a social instrument to call out misconduct. How is it that humour fosters community and division at the same time? At our next Curiosity Café, we’ll revisit the silly and serious sides of humour, and explore the role that humour plays in how we connect, think and live. Together, we’ll discuss questions like: * How does humour help break down barriers and bring people together? * Does humour have a unique ability to help us find common ground and strengthen relationships? * On the other hand, does how we respond to humour have implications for our social capital? * How might jokes or humour be perceived by people from different backgrounds? * Is it possible to create humour that’s both provocative and inclusive? * How might humour give us a sense of control? * What is or should be the role of comedy in society? Join us for a lively and collaborative conversation moderated by Erik Ai and Dylan Michels, where we’ll explore questions, new and old, and (hopefully) share plenty of laughs along the way. **Space is limited!** **Please obtain a “Pay-What-You-Can” ticket from Curiosity Café at [this link (click here)](https://www.eventbrite.ca/e/curiosity-cafe-revisited-no-laughing-matter-humour-in-our-lives-tickets-1985339500891) to attend this event. You need a ticket to be admitted.** See the above link for more info about tickets and other options including a limited number of free tickets. Come and hang out with us, grab food, and read through our handout from 6-6:30pm. Our structured discussion will run from 6:30-8:30pm with a 10 minute break in the middle. Hope to see you there! ***__________________________________________________________________*** This event is brought to you by [Being and Becoming](https://beingnbecoming.org/), a Toronto based non-profit. We aim to create community around exploring everyday concepts and experiences so that we may live more intentional, thoughtful, and meaningful lives. We use philosophy as a tool with which we can come to a richer understanding of the world around us. By offering activities, spaces, and other opportunities for conversation and co-exploration, we hope to enable the meeting and fusion of individuals and their ideas. Everyone is welcome, regardless of background: indeed, we believe the journey is best undertaken alongside explorers from a variety of disciplines, cultures, backgrounds, and experiences. Find out more about Being and Becoming [here](https://beingnbecoming.org/). About the Curiosity Café Series: For those of you who haven’t had the opportunity to join us at our Curiosity Cafés and are wondering what they’re all about: every two weeks, we invite members of our community to come out to the Madison Avenue Pub to engage in a collaborative exploration of our chosen topic. Through these events, we aim to build our community of people who like to think deeply about life’s big questions, and provide each other with some philosophical tools to dig deeper into whatever it is we are most curious about.

Hello everyone, Please join me and my other groups for a great evening of Mix, Mingling, Movie and beverages before as we get ourselves ready to see a great movie. With a nice group discussion following the film as well. (Project Hail Mary) (Saturday March 28th) Including a pre-movie mix and mingle, ice-breaker in the cool (V.I.P lounge) \*Joined by my other groups too; so we can anticipate a great turn out ***\*Meet me and the others right outside the box office beside the air hockey and arcade games)* (8:30 pm to 8:50 pm)** Kindly read the details carefully below: Sincerely, Steve Flemming (Organizer/Host) Event Details: **Saturday Night at the Movies! (Project Hail Mary) (Saturday March 28th)** -A great night to mix, mingle, make new friends and go see a great movie; than hang out after for a little conversation over a cold or hot beverage **About Film: Project Hail Mary** Science teacher Ryland Grace wakes up on a spaceship with no recollection of who he is or how he got there. As his memory slowly returns, he soon discovers he must solve the riddle behind a mysterious substance that's causing the sun to die out. As details of the mission unravel, he calls on his scientific training and sheer ingenuity -- but he may not have to do it alone. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Event Fee:** for Mix and Mingle (before and after film; and the planning of the event) 4 dollars by e transfer in advance (minimum day prior to event to steveflemming11@gmail.com or 5 dollars day of event ( by cash or e transfer) \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- (Movie fee- separate) **Where and When to Find Us?** **Location:** **(Inside Yonge & Eglinton Centre)** 2300 Yonge Street, Toronto, ON M4P 1E4 **(We will meet out front of box office beside the air hockey table and arcade)** (Simply walk up the steps from the outside and come into the Centre- turn left and we will be waiting right there) **Arrive between 8:30 pm and 8:50 pm** (We will head to the V.I.P. lounge for a beverage before heading to see the film) **Parking and Close to the Yonge and Eglinton subway** (Lots of parking in the area and 2 minute walk from the subway)

Hello all! Hiking series are back!!! This time, it will be bi-weekly for the next two months. We will have 4 different hikes over the course of the upcoming 2 months ranging from 5 - 7 km per hike. So get your boots, and water, and do some hiking!

Cost: $16 per person (includes feather birdies). Plastic birdies are available upon request. Payment: Cash is preferred and should be made before playing. E-Transfer (EMT) or debit card payments are accepted (plus applicable taxes). Time: Sundays, 9:00 AM – 12:00 PM Location: 1370 Birchmount Rd, Unit #6 (Closest intersection: Birchmount Rd & Lawrence Ave) Requirements: Racquets: Bring your own racquet. Rentals are available at the club if needed. Shoes: Please bring indoor gym shoes and change into them at the club before entering the courts. Winter Reminder: Ensure you change into court shoes before stepping onto the courts during the winter months. Rules and Guidelines: No outside food is allowed. This meetup is open to players of all skill levels (beginner to advanced). The primary purpose is to play friendly doubles games. This event is not intended for singles matches or formal training sessions. Attendance is capped based on court availability. Waitlisted participants may be moved to the confirmed list as space allows, with priority given to regular attendees and those with reliable RSVP history. No Drop-ins: Only individuals on the confirmed “Going” list are allowed to attend. Unregistered participants will be asked to leave. Cancellation Policy: Please cancel at least 48 hours in advance if you cannot attend. Failure to do so will result in being marked as a no-show. Repeated no-shows may lead to removal from future “Going” lists.

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.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

**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)

**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

(Note: RSVPing here on Meetup does NOT reserve your seat. To do that, you'll need to register at our website, **[HERE](https://www.coreerocks.com/Events.aspx?ID=IN-PERSON-in-Columbus-Creative-Deal-Autopsies-Wholesaling-101-14-4-7-2026)**.) The market changed—and most investors are still operating like it didn't. Deals that used to work don't. Buyers want different things. And a lot of what's being taught right now is outdated or just wrong. And, since 2011, it's been our job to make sure that our members are armed with the most up-to-date, real-world strategies for building wealth in Central Ohio real estate… …so our mission with this meeting (and every meeting) is to give you the no-hype, warts-and-all info you need to succeed. First, Wholesaling 101—a clear, real-world look at how wholesaling actually works today, what to pay, and how to stay out of trouble. Then, Creative Deal Autopsies—real investors breaking down real deals with real numbers, real conversations, and real outcomes. You'll also get the chance to put the presenters in the hot seat and ask any and every question you have about how they did their deals. You'll learn: 1. What wholesaling actually is 2. How to calculate real offers 3. Where deals are coming from now 4. What buyers want 5. How creative deals are structured 6. What contracts and terms are used 7. What can go wrong—and how to avoid it **Agenda:** 5:00–6:00: Free Light Dinner and Networking 6:00: Earlybird Meeting – Wholesaling 101 7:00: Buy-Sell-Trade (members only) 7:30: Creative Deal Autopsies Members: Free First-time guests: Free Non-members: $35 (or join for $30 instead) Remember, to actually reserve your seat, you have to go **[HERE](https://www.coreerocks.com/Events.aspx?ID=IN-PERSON-in-Columbus-Creative-Deal-Autopsies-Wholesaling-101-14-4-7-2026)** and register on our website!

**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.

Join us for a casual chat over coffee & tea at Grandview Grind! Come out and meet some new people, enjoy your favorite drink, and make some new friends!