Data Science

\*\* We are moving to heylo.com. Please join us there to sign up for any upcoming events (although you will still be able to sign up on Meetup for the next couple of months). \*\* We will be holding our monthly in-person Skeptics in the Pub event on the second Tuesday of every month. We are an informal group of scientific skeptics who promote critical thinking, reason, and empirical evidence, advocating for the scientific method to evaluate claims while opposing pseudoscience, superstition, and anecdotal evidence. We will get together for a social event to say hello to people we may have only met on-line, to reconnect with some long-time acquaintances, and to meet new people who may be interested in skepticism. We will not be having a presentation or a speaker, just a chance to sit down and have a meal and/or a beverage and a conversation with a pleasant group of fellow skeptics. (Monthly on-line Zoom meetings will continue as usual, on the third Friday of every month). Our previous venue, Prenup Pub, has closed, so we will meet this month at a **new location**, The Frog: A Firkin Pub, 4854 Yonge St, North York, ON M2N 5N2. Google Maps says it is about a 3-minute walk (200 m) from Sheppard-Yonge subway station, north of Sheppard, on the west side of Yonge. Food and beverages are available from the menu. Foods include a full menu from soups, salads, and appetizers to burgers, sandwiches, entrées and dessert. The beverage menu includes about16 different beers on tap, many bottled beers, ciders, seltzers, and coolers, as well as a selection of wines, various cocktails, and non-alcoholic drinks. When you arrive, just ask where the "Skeptics" are. If you plan on joining us, please register so we can estimate the number of attendees.

**This is a ticketed event. Please register at [this link](https://luma.com/qzxavbjl).** ​Most AI governance proposals land in one of two failure modes: command-and-control regulation that can't keep pace with the technology, or heavy delegation to industry that leaves values-based decisions in private hands. In a 2023 paper, Gillian Hadfield and Jack Clark propose a third path: regulatory markets, where governments license private regulators and require AI companies to purchase regulatory services from them. ​Kathrin Gardhouse will walk us through the paper's core argument and what it would actually mean in practice: how regulatory markets differ from existing approaches, what problems they solve, and what they might get wrong. ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions

**This is a ticketed event. Please register at [this link](https://luma.com/2eq29bip).** ​Proposals to nationalize AI development keep surfacing — whether driven by fears of AGI-related loss of control, or by national security logic like an "AI Manhattan Project." But these discussions rarely engage with how nationalization actually works in practice. Join Jason Yung at Trajectory Labs as he draws on the history of nationalization — its triggers, mechanisms, and consequences — to build a grounded picture of how nationalizing an AI company might actually unfold ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions

**When:** Tuesdays, 7:00 PM - 9:00 PM, Winter/Spring 2026 **Where:** 792 Glencairn Ave., Toronto, ON **Attend online via Zoom:** https://us02web.zoom.us/j/89671983431?pwd=hoYVrQG1EF4ibvIieyTnavmXxWcy5h.1 **Main Text:** [Deity, Cosmos and Man](https://www.theosophy.world/sites/default/files/ebooks/DeityCosmosAndMan_GFarthing.pdf) by Geoffrey Farthing If the above link is broken, paste this into bar for free PDF: https://www.theosophy.world/sites/default/files/ebooks/DeityCosmosAndMan_GFarthing.pdf This third part of our **Intro to Theosophy** series turns to *Deity, Cosmos and Man* by Geoffrey Farthing, a clear and reliable guide to the foundational teachings of Theosophy as originally presented by **Helena Petrovna Blavatsky** and her Adept teachers. This study explores a living, intelligent universe governed by unity, law, and vast evolutionary cycles, and examines how the human being reflects these same cosmic principles within their own inner constitution. Emphasis is placed on Theosophy not as a belief system, but as a coherent body of knowledge—offering insight into consciousness, post-death states, hierarchies of beings, and the deeper purpose of human evolution. Alongside discussion and reflection, the group will explore guided experiential exercises designed to support awareness, perception, and integration. The intention is to: * Develop a clear understanding of core Theosophical principles * Explore the relationship between cosmos, consciousness, and the human constitution * Encourage experiential insight alongside study and dialogue * Support inner balance, discernment, and conscious self-development This class is suitable for: * Students continuing from Parts 1 and 2 of the Intro to Theosophy series * Those interested in Theosophy, cosmology, and human evolution * Participants seeking a grounded, psychologically oriented approach to spiritual study * Anyone curious about consciousness, meditation, and the deeper structure of reality No prior experience with Theosophy, yoga, or meditation is required. Only curiosity, openness, and a willingness to explore thoughtfully.

Join us for an evening of curated speed dating, meant for those who earn 100k+ per year, and are professionally employed. An Evening of Uncompromising Standards: Verified Elite Speed Dating Welcome to the next level of speed dating. Our Verified Elite Speed Dating event is meticulously curated for accomplished men and women in their 30s and 40s who refuse to settle. We understand that your time is your most valuable asset, which is why we have eliminated the uncertainty of traditional dating. Every attendee in the room has been vetted through our proprietary verification system, ensuring that identity, net worth, and professional standing are not just claimed, but confirmed. This exclusive evening is designed to foster genuine connections among high-caliber individuals who share your drive, ambition, and appreciation for the finer things in life. Your ticket includes a welcome cocktail or Whiskey flight, and light appetizers before the event starts. Because this experience is strictly limited to our verified members, the caliber of conversation and the potential for meaningful partnership are unparalleled. This is our first ever Verified Elite event, so don't miss out! IMPORTANT: In order to qualify for this event, you must complete the verification process on the www.15firstdates.ca website. Start by creating a profile, then look for the Verified Elite link on the left hand side. Once approved, you will be able to sign up for the event. Please do not buy a ticket here. NOTE: The verification is done through our complex Ai system, and all personal data will be permanently deleted after verification. No one at 15Firstdates will ever see your information, and we will never keep or view any of the documents you upload. Tickets: https://www.eventbrite.com/e/toronto-verified-elite-speed-dating-age-30s-and-40s-tickets-1987013531963

LOCATION: YONGE & DUNDAS This meetup is full. Thanks to those GOING who sent payment by the deadline! I've sent your ticket and our meeting location to the email used for the transfer. Looking forward to seeing everyone :)

We’re thrilled to invite you to an exciting meetup! We'll have one talk presented by an Elastic employee and one presented by a community member. Bring your questions and come support the community! **Agenda** **5:00 PM** – Doors Open Come in, say hello, grab some food, and settle in for an engaging evening. **5:45 PM** – **"Lessons from evaluating production AI Agents for over a year", presented by** Susan Chang, Principal Data Scientist at Elastic **6:15 PM** – Q&A **6:30 PM** – "**Elasticsearch Journey – Working in Different Industries", presented by** Yasir Zaid, Elastic Certified Engineer **7:00 PM** – Q&A **7:15 PM** – Networking & Event Wrap-Up Stick around to chat, connect, and share insights with fellow attendees. **When:** Thursday, May 14th 5:00 - 7:00 pm **Where:** [Centre for Social Innovation - Spadina](https://www.google.com/maps/search/?api=1&query=43.650017%2C%20-79.397156) 192 Spadina Ave. · Toronto, ON 3rd floor, The Viola Desmond Room **Abstracts** **"Lessons from evaluating production AI Agents for over a year"** This talk covers methods of evaluating AI Agents, with an example of how the speakers built evaluation frameworks for a user-facing AI Agent system which has been in production for over a year. We share tools and frameworks used (as well as tradeoffs and alternatives), and discuss methods such as LLM-as-Judge, rules-based evaluations, ML metrics used, as well as selection tradeoffs. **Bio:** Susan Shu Chang is a Principal Data Scientist at Elastic, where she leads work on production-grade machine learning, including generative AI and agentic workflows. She is also an internationally recognized speaker, O’Reilly author, and keynote presenter at major global technical conferences. **My Elasticsearch Journey – Working in Different Industries** This talk explores Yasir Zaidi’s hands-on experience using Elastic products to deliver strategic solutions across banking, insurance, and telecommunications. Through real-world examples, the session will cover how Elasticsearch and the broader Elastic Stack have been used for search architecture, security, SIEM, and observability, along with some of the newer and more exciting projects now being built with Elastic. The talk will also highlight recent Elasticsearch features and innovations, and how they are opening up new possibilities for modern enterprise use cases. **Bio:** Yasir Zaidi is the Owner of ZD Inc. ([https://zd-inc.net/](https://zd-inc.net/)) and Elasticsearch Experts ([https://elasticsearch.expert/](https://elasticsearch.expert/)), and Co-Founder of 360metrics ([https://www.360metrics.io/](https://www.360metrics.io/)) and Certified Elasticsearch Partner Solution Architect. He has delivered hundreds of Elasticsearch projects for organizations around the world, with experience spanning Observability, SIEM, Enterprise search, Cloud deployments, and AI-powered search solutions, Serverless and much more. His work includes engagements with Ericsson, SAP, Intact Insurance, Videotron, RONA, Geotab and Desjardins Bank, just to name a few. Backed by three master’s degrees and Elastic certifications, Yasir brings deep technical expertise and proven global delivery experience. Linkedin: [https://www.linkedin.com/in/yasirzaidi/](https://www.linkedin.com/in/yasirzaidi/) Spots are limited, so don't miss out!

Whether you're a seasoned tech veteran or just starting out, let's create the ideal afterwork place to meet and chill with other workers in tech - find that new job, expand your network, share ideas, and stay up-to-date on the latest trends in the industry. Let's inspire, innovate, and shape the future of technology in Toronto! Tech, AI, Data, IT, and more \~ ​ \-\-\-\-\-\-\-\- ### Event Details 💰 Cost: Free 🍺🥃 Afterwork drinks and social 📍 The Goodman Pub and Kitchen (Inside, or ask for Tech Social) - 207 Queens Quay W 🕕 6:00pm onwards every Friday ​ **Or RSVP on the website for our Discord / WhatsApp communities, and to see who else is going and what their backgrounds/seniority/interests are:** 🔗 [Link to Website](https://techsocialtoronto.com/event/meetup) ​ If you cannot find us, ask staff about Tech Social, or ask in the WhatsApp community above. ​ \-\-\-\-\-\-\-\- ### Who Should Attend? Perfect for **Toronto tech professionals** including: * **Software Developers & Engineers** (Python, JavaScript, Java, C++, React, Node.js) * **Data Scientists & Analysts** (Machine Learning, AI, Data Visualization, SQL) * **Cybersecurity Professionals** (InfoSec, Ethical Hacking, Cloud Security) * **Product Managers & Tech Entrepreneurs** * **Students & Tech Graduates** looking to break into tech * **Career Changers** entering tech industry * **Remote Workers & Digital Nomads** in Toronto * **Startup Employees & Entrepreneurs** * **Digital Marketing & Product Professionals** * **Senior Engineers** looking to mentor and network \-\-\-\-\-\-\-\- ### What You'll Experience * 🤝 **Network with Toronto tech community** * 💼 **Job opportunities** and referrals from peers * 🚀 **Career acceleration** through peer networking * 🎯 **Skill sharing** and tech discussions * 🧠 **Knowledge sharing** on latest tech trends * 🎉 **Social activities** and games * 🧠 **Learn from peers** about real-world challenges * 🚀 **Collaborate** on projects and ideas * 🎯 **Mentorship connections** (both ways!) * 🍻 **Fun, casual atmosphere** \- no matter your seniority level \-\-\-\-\-\-\-\- ### Event Guidelines * Support the venue by purchasing drinks/food (no outside items allowed) * Maintain appropriate behavior and respect for all attendees * Bring physical ID if required by venue (call ahead to confirm) \-\-\-\-\-\-\-\- ​ ​ *Toronto Canada tech social mixer afterwork drinks AI connect network data IT programming cybersecurity digital nomad blockchain crypto big data science computer networking community jobs entrepreneur industry product design startup software development machine learning python javascript professional networking career development it professionals developers mentorship ai sql analytics data engineering business intelligence deep learning tensorflow pytorch data visualization data analysts ml engineers Toronto Canada tech social mixer afterwork drinks AI connect network data IT programming cybersecurity digital nomad blockchain crypto big data science computer networking community jobs entrepreneur industry product design startup software development machine learning python javascript professional networking career development it professionals developers mentorship ai sql analytics data engineering business intelligence deep learning tensorflow pytorch data visualization data analysts ml engineers*

**This is a ticketed event. Please register at [this link](https://luma.com/n5d2q50u).** ​The Platonic Representation Hypothesis (Huh et al., 2024) proposes that neural networks are converging toward a shared statistical model of objective reality, offering a Platonic explanation for the growing representational similarity observed across models of different architectures, datasets, and modalities. In this talk, Robert Adragna argues that such convergence is computationally intractable in practice. Truly representing reality would require models to recognize the same real-world concept across all its possible appearances — a form of robustness that theoretical and empirical work suggests is infeasible to achieve at scale. He proposes an alternative account: representational convergence reflects shared structural assumptions embedded in training data, not the discovery of objective reality. ​​​**Event Schedule** 6:00 to 6:30 - Food and introductions 6:30 to 7:30 - Presentation and Q&A 7:30 to 9:00 - Open Discussions ​​​​​​If you can't make it in person, feel free to join the live stream starting at 6:30 pm, via [this link](https://www.youtube.com/@Trajectory-Labs/live).

Struggling with motivation and focus as you hammer away on your manuscript at home? Want to join a community of writers as we embrace the joys and pains (mostly pains) of writing together? Bring your laptop, pen & paper, old-school typewriter, or futuristic writing gadget, and join an enthusiastic community of science fiction and fantasy writers as we work on our current projects in the same space. The format will be similar to our online writing sprints: 30-minute blocks of focused, quiet writing time (the sprints), interspersed with breaks where we can chat, ask questions, and share our writing experiences.

**SPDY MEETUP 005** Welcome back! Following up on last week’s announcement, we are thrilled to schedule **SPDY MEETUP 005**. As always, we’ll be joined by incredible engineers who are ready to share their latest research and insights. Here's an updated list of presenters and topics: **🔸 Annie Sullivan**, Senior Staff Software Engineer at **Google** *"The latest data on soft navigations in Core Web Vitals"* 🔸 **Michal Mocny**, Sr Software Developer, **Google Chrome**, Speed Metrics *"InteractionContentfulPaint: a new Performance API for measuring UX."* 🔸 **Bas Schouten**, Performance Tech Lead at **Mozilla** *TBA* We have an incredible evening lined up featuring expert-led sessions sharing the latest in web performance research. As always, there will be dedicated time for Q&A following the sessions. **Interested in speaking?** Slots are available for lightning talks. If you’d like to share your work, please reach out via DM or email at **henrihelvetica@gmail.com**. Beyond the presentations, come enjoy some great networking with our vibrant community. We recommend **RSVPing as soon as possible** to secure your spot, as we are expecting international teams from both Google and Mozilla to also attend. With that, we look fwd to seeing everyone May 13th. -Henri

Join us on Wednesday, May 13th, 2026, at 6:30 PM for a session presented by **Aidan Foster** on using Claude Design, Anthropic's new AI-assisted design tool, to vibe design web user interfaces. **Event Details:** * **Location:** CSI Spadina - 192 Spadina Ave., Toronto, ON M5T 2C2. Viola Desmond room on the 3rd floor * **Date and Time:** May 13, 2026, 6:30 PM - 8:30 PM * **Topic:** Experimenting with Claude Design. **Location Note:** This meeting will be held in the **Viola Desmond room on the 3rd floor**. Access will be via the door to the stairs, not the usual main entrance to the basement area. We will send the building access code on the morning of the meetup, via email and chat. **Session Topic:** Claude Design starts as code and grows into design software, the opposite direction of Figma. We'll look at: * Generating a design system from a Figma file * Iterating with the tweaks panel and edit mode * Prototyping UI from existing code and screenshots * Where Claude Design fits alongside Figma and Claude Code **Your Voice Matters:** Got ideas for future presentations or want to be a speaker? Reach out to Pierre or Aidan – we're always looking for speakers and new insights! **Drinks & Discussion:** Stay after the presentation for drinks and more Drupal talk at [Hotel Ocho](https://maps.app.goo.gl/4HF9ooz2Ki9B8o577) **Special Thanks to our Sponsor:** A big shoutout to[ Kalamuna](https://www.kalamuna.com) for providing the CSI space for our meetup. Looking forward to seeing old friends and new faces alike. Let's make this a great meetup for Toronto's Drupal community, going strong since 2006!

Please Note: This event is advertised on multiple platforms. Please RSVP and get a ticket on Mindstone (https://community.mindstone.com/events/mindstone-toronto-may-ai-meetup-2026) to view the agenda and guarantee a spot. Welcome to the most electrifying and ground-breaking AI Meetup in Toronto! Join us once a month as we delve into the world of artificial intelligence, explore its cutting-edge practical applications, and marvel at the astonishing projects that are shaping our future. Why should you attend? • Get up close and personal with the AI projects that are redefining the boundaries of technology and human potential. • Learn from the brightest minds in the field and gain valuable insights into the ever-evolving AI landscape. • Unleash your curiosity, fuel your creativity, and expand your network as you connect with fellow AI aficionados and pioneers. What you can expect? Mindstone events consist of three talks covering different aspects: • What I Learned Building With LLMs: A technical demo breaking down the process for building a product using AI with real-life learnings and insights. • How To Be More Productive Using AI: A practical demo and step-by-step guide on how to use AI to speed up and improve tasks. • What Does The Future Look Like With AI?: A theoretical talk on the impact of AI on work, life and society. After the talks we'll have pizza, drinks, and networking. Don't miss out on this extraordinary opportunity to witness the AI revolution in action. It's time to embark on a thrilling journey into the future and discover the endless possibilities that lie within the realm of artificial intelligence. Reserve your spot today for the ultimate AI experience! 💡✨ (https://community.mindstone.com/events/mindstone-toronto-may-ai-meetup-2026) Please Note: This event is advertised on multiple platforms. Please RSVP and get a ticket on Mindstone (https://community.mindstone.com/events/mindstone-toronto-may-ai-meetup-2026) to view the agenda and guarantee a spot.

**Total Eclipse of the Chart: School Redistricting Dashboards** In this presentation, we will explore the utilization of maps, sets, and SQL within a Tableau dashboard to help provide “what-if” analyses generated through the use of a mapped dashboard, providing different scenarios and the potential implications of these. While in this use case we are focused on a large school district, the concepts of utilizing existing data to explore the future impacts of modifying different geographic boundaries can be useful to many industries, balancing the mix of maps with visual analytics. **About Our Speaker** Robert Kramer is the Data Systems and State Reporting Coordinator at South Western City Schools in Grove City. He has worked there for 17 years, serving previously in the roles of Data Analyst, Programmer, and Operations Coordinator. Prior to working at South Western, he worked as a Systems Engineer at Pinnacle Data Systems in Groveport. He graduated in 2005 from The University of Toledo with his Bachelor’s in Computer Science and Engineering, and a minor in Mathematics. Robert resides in Obetz with his wife, and their 15 and 12 year-old daughters. He was also just elected to his 3rd four-year term on the Obetz City Council. 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)

Practical AI for Power BI Developers A year ago, “agentic AI” was mostly hype for Power BI teams. Today, it deserves your undivided attention. For Power BI pros, there is now a real opportunity to reduce repetitive development work, accelerate delivery, and help developers do more, but only when strong DataOps practices are in place to make AI workflows effective. This session is a no-nonsense introduction to effective AI patterns for Power BI and Fabric development. Along the way, we will make sense of the growing pile of terminology, including skills, plugins, hooks, and MCP. You will see examples of how modern AI tooling can help with development tasks across Power BI and Fabric, along with the prerequisites, guardrails, and DataOps principles needed to use it responsibly. Whether you're burned out on AI hype or already using Copilot CLI daily, this session will show you the foundations that are finally making AI-assisted development genuinely useful.

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

**We'll have two meetings covering AI - this second one is for Positron** We will review which AI features are linked in for Positron, and how to use them. **Source documents:** the repository is public, at: https://github.com/BarryDeCicco/AARUG_2026_04_09_AI_In_Positron You can download documents, or clone/fork the repository. **Location:** The meetup will be at SPARK's ([https://annarborusa.org/](https://annarborusa.org/)) Ann Arbor site: [SPARK HQ (Ann Arbor)](https://urldefense.com/v3/__https://www.google.com/maps/place/Ann*Arbor*SPARK*Headquarters/@42.2792515,-83.7447708,17z/data=!3m1!4b1!4m5!3m4!1s0x883cae3effe193cb:0x5296a53db2a282bf!8m2!3d42.2792515!4d-83.7447708?hl=en-US__;Kysr!!HXCxUKc!3EEdBNXRJKknP6LCGkZetSuEsdtChFojQnOVitFUC5C0fyilqXEbiMstT9ajBR3Cw-55qoFkrElCjQvjMdTxUw$). There is on street parking, and parking at local structures. **This will be a hybrid meeting - the Zoom session starts at 6:30 PM.** **Time:** The doors will be open at 6:00, with pizza and beverages provided. We will have a meet-and-greet-and-pizza session, and then at 6:30 we'll have a presentation. **Zoom information:** https://us06web.zoom.us/j/6658850479?pwd=Snd1UmZTT3pjZktENlczUXh4SERwUT09&omn=89012971377 Passcode: 940392 **If you can't get in, please call me at: 734 223-3307** **The github repository is at: https://github.com/BarryDeCicco/AARUG_2026_04_09_AI_In_Positron**

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message \*\*Chris (the organizer)\*\*with a **title and short description** of what you’d like to share. 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.linkedin.com/company/transformlabs/) Sign up also accessible via [Transform Labs Luma](https://luma.com/transformlabshq)

Join us for a practical, beginner-friendly guide to choosing the right large language model. We’ll compare major models like ChatGPT, Claude, Gemini, and Llama, talk about when to use hosted APIs versus local models, and break down the tradeoffs around cost, speed, quality, privacy, context windows, coding ability, and reliability. You’ll leave with a clearer mental model for picking an LLM based on your actual use case instead of hype, benchmarks, or brand names. No deep AI background required. 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.

**Abstract:** This is a practical playbook for building a production-grade data lakehouse. It walks through foundational principles — naming conventions, least-privilege access, automated CI/CD testing — before diving into medallion architecture. Furthermore, metadata-driven design patterns show how configuration tables and dynamic notebook orchestration eliminates hard-coded pipelines. The deck covers star schema modeling, guidance on choosing between Spark, Pandas, and SQL, and data quality enforcement using DQX with YAML data contracts. Finally, we dive into security best practices and performance optimizations. **Host:** Justin Shea, Mehdi Jeddi, Erik Pak, and Sou-Cheng Choi **Talk Format:** This is a hybrid event. To attend online, join us on Zoom here at 6pm: https://iit-edu.zoom.us/j/89379230295?pwd=NdETyE5sdYuSrvsrBZXSBFkUESBVkg.1 Meeting ID: 893 7923 0295 Passcode: 5t5WYn **Sponsor:** Adyen, UIC College of Business, and PyData Chicago co-host this event. UIC will provide the meeting site. Adyen will sponsor pizza and soft drinks for the onsite participants. **Address:** University of Illinois - Chicago, Douglass Hall, Room 220, 705 S Morgan St, Chicago, IL 60607 **Logistics:** “UIC Douglass Hall” is recognized on Google Maps, which can guide you through campus. Once you arrive, proceed to the second floor, room number 220