Applied Statistics

**This is a ticketed event. Please register at [this link](https://luma.com/wbpv7ouu).** In this talk, Talha Paracha will present insights from his latest research on using language models for improving software security ("Hallucinating Certificates", to appear at ICSE 2026). Certificate validation is a crucial step in Transport Layer Security (TLS), the de facto standard network security protocol. Prior research has shown that differentially testing TLS implementations with synthetic certificates can reveal critical security issues, such as accidentally accepting untrusted certificates. Paracha et al. introduce a new approach, MLCerts, to generate synthetic certificates that leverages generative language models to more extensively test software implementations. Recently, these models have become (in)famous for their applications in generating content, writing code, and conversing with users, as well as for "hallucinating" syntactically correct yet semantically nonsensical output. The authors leverage two novel insights in their work: (a) TLS certificates can be expressed in natural-like language, namely in the X.509 standard that aids human readability, and (b) differential testing can benefit from hallucinated malformed test cases. MLCerts finds significantly more distinct discrepancies between the five TLS implementations OpenSSL, LibreSSL, GnuTLS, MbedTLS, and MatrixSSL than the state-of-the-art benchmark Transcert. ​​​**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).

**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. **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/86862937929?pwd=woa95D1r85dobjqxQ07NfBLNdTa9hc.1 Passcode: 705462 **If you can't get in, please call me at: 734 223-3307** **Document source:**

**Note the location Thai Express Union Station food court.** **Google pin.** [https://share.google/grUYGncv3G3exetw7](https://share.google/grUYGncv3G3exetw7) **We will discuss day trading, swing trading strategies and tools.** This will not be a presentation format. **Telegram group for quicker communication:** [https://t.me/+m8BMRABGX74xNmZh](https://t.me/+m8BMRABGX74xNmZh) **Discord Group for exchanging ideas, charts and strategies** [https://discord.gg/SVYTSPh7](https://discord.gg/SVYTSPh7) We will discuss options trading and investing strategies, as well as the skills needed to start. It is a **casual meetup to meet people who are interested in trading or building a career around it, especially algorithmically. No "financial gurus" are welcome.** Join us for a meetup where we share trading ideas, and connect with others who share a common interest in investing. Algorithmic trading is commonly used by large institutional investors and market makers, but it is also accessible to retail traders. It offers several advantages over manual or discretionary approaches—particularly in minimizing psychological errors that often impact human traders. Some of the topics we usually discuss: \- Reasons for investing \- Limitations of being a retail trader \- Practical tools: brokers\, APIs\, data sources\, real\-time implementation \- Brainstorming ideas: strategies that may be working today **Note this even is not sponsored or endorsed by any business where we are meeting. We are just using their space for casual meetup event.** **Please no promotion of MLM, pyramid schemes, self promotion to paid services, affiliate promotion, paid subscriptions or similar stuff.** **Useful Links** * Notion page of [Algo Trading Resources](https://systemetic.notion.site/Algorithmic-Trading-Resources-fe400c5258e440fd8a4d63770d08bc13) **Disclaimer:** This meetup is for educational and informational purposes only and should not be construed as professional financial advice. The discussions and materials presented at this meetup are provided as general information and are not intended to be a substitute for professional financial, legal, or tax advice. All participants are encouraged to consult their financial advisor or qualified professionals regarding specific financial issues. None of the organizers, speakers, or participants at this meetup are liable for any financial loss or damage incurred as a result of trading activities or decisions based on the information shared during this event. Trading stocks and other financial instruments involves risk and may not be suitable for all individuals. **CFTC Rule 4.41:** Futures, foreign currency and options trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing one’s financial security or lifestyle. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results. **Non-Endorsement**: References to specific securities, investment strategies, or any financial instruments during the meetup are for illustrative purposes only and do not constitute a recommendation, endorsement, or investment advice by the organizers or speakers. **No Guarantees**: There is no guarantee that the investment strategies discussed will be profitable or protect against loss. All investments involve the risk of loss. **Conflict of Interest**: Presenters or organizers may hold or intend to acquire positions in securities discussed during the meetup, which may create a conflict of interest.

8.00pm-9.00pm Salsa Intermediate Instructor :David Drop in = $15 You are welcome with or without partner. We are switching partner so you will have some one to practice during the class . There is also Bachata Class starting from 9.00 for an hour after this class. Address: 39 Glen Cameron Thornhill, unit 1 647-504-9876

Hungry for real talk and real truth? Join open hearts from all over the GTA as we dive straight into the powerful words of Jesus—laughing, learning, and growing together in a super welcoming, laid-back vibe! Everyone’s welcome—whether you’re a longtime Bible lover, just starting your journey with Jesus, or simply curious to discover who He really is. No pressure, just great conversation and good energy! ***Attention*** We meet in the Yonge-Sheppard Centre Food Court at the tables in front of SECOND CUP\*\*\* (lower level) Perfect spot to connect over food court buzz, make new friends, and explore the Bible in a fun, no-judgment zone. See you there—bring your questions, your coffee, or just yourself!

9.00pm-10.00pm Bachata intermediate Instructor :David We switch partners so it's ok if you don't have partner Drop in = $15 You can enjoy unlimited classes any days any time and learn variety of Dances Waltz, ChaCha, Salsa, Bachata Monthly plan = $100 for new members first month Address: 39 Glen Cameron Thornhill, unit 1 647-504-9876 Cell:647-504-9876

A diffuse harm hurts many people a little; a concentrated harm hurts one person a lot. Other things equal, diffuse harm seems less bad than its concentrated counterpart. For example, shortening a billion happy lives by a second each seems less bad than shortening one happy life by a billion seconds (\~30 years). But this attractive thought is surprisingly difficult to maintain. Although many problems for such a view are known, a particularly vivid difficulty arises in cases that involve a sequence of social positions, each very similar to the last, such as the Fortuna’s Wheel scenario. In such cases, it follows, from rather minimal assumptions, that diffuse harm is just as bad as its relevantly similar concentrated counterpart. In response, some may wonder whether the parity of diffuse and concentrated harms holds only in these special sequential cases. But it can be argued that the approximate parity of diffuse and concentrated harms extends well beyond such cases. Specifically, it can be argued that in many realistic cases, a diffuse harm will bring about an outcome approximately as bad as a relevantly similar concentrated harm. Diffuse harm is easily underestimated. Zach Barnett https://philosophy.nd.edu/people/faculty/zach-barnett/ Assistant Professor Department of Philosophy University of Notre Dame **About the Speaker:** Zach received his PhD from Brown University in 2018. He joined Notre Dame in 2023, moving from the National University of Singapore, where he taught for five years. Zach mainly studies ethics, practical rationality, and epistemology, and he hopes that his work is convincing, surprising, and easy to understand. Current research interests include collective action problems, aggregation and risk, and followability of norms. His representative publications include "Rational Moral Ignorance" (2021) in *Philosophy and Phenomenological Research*, "Why You Should Vote to Change the Outcome" (2020) in *Philosophy & Public Affairs,* "Philosophy Without Belief" (2019) in *Mind*, and "No Free Lunch: The Significance of Tiny Contributions" (2018) in *Analysis*. **\* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \* \*** This is a talk with audience Q&A presented by the University of Toronto's Centre for Ethics that is free to attend and open to the public. The talk will also be streamed online with live chat here [to be posted]. About the Centre for Ethics (http://ethics.utoronto.ca): The Centre for Ethics is an interdisciplinary centre aimed at advancing research and teaching in the field of ethics, broadly defined. The Centre seeks to bring together the theoretical and practical knowledge of diverse scholars, students, public servants and social leaders in order to increase understanding of the ethical dimensions of individual, social, and political life. In pursuit of its interdisciplinary mission, the Centre fosters lines of inquiry such as (1) foundations of ethics, which encompasses the history of ethics and core concepts in the philosophical study of ethics; (2) ethics in action, which relates theory to practice in key domains of social life, including bioethics, business ethics, and ethics in the public sphere; and (3) ethics in translation, which draws upon the rich multiculturalism of the City of Toronto and addresses the ethics of multicultural societies, ethical discourse across religious and cultural boundaries, and the ethics of international society. The Ethics of A.I. Lab at the Centre For Ethics recently appeared on a list of 10 organizations leading the way in ethical A.I.: https://ocean.sagepub.com/blog/10-organizations-leading-the-way-in-ethical-ai

\*\***The Toronto History Walks Yearly Pass is available. Get it now for $125.00 for 1 year of unlimited tours, email** **torontohistorywalks@gmail.com** **for more information or for signing up!\*\*** \*\* **Please note: Please e-transfer the ticket price when booking your space for this tour! You can e-transfer to the following email at:** **torontohistorywalks@gmail.com** John and William Hogg, sons to James Hogg, subdivided the marshy land that became "Hoggs Hollow." It took a little time to encourage settlers to develop the land due to the inhospitable environment, but settlers moved in over the following decades. With the historic village of York Mills adjacent, a school, post office, pottery, blacksmith, livery, stable, store, cemetery and St. John's Anglican Church served Scottish, Irish and English immigrants. The history of modern Hogg's Hollow began in the 1920s with the creation of lots, and homes reflected the beauty of the English countryside. The Baron Renfrew School opened in 1925 to replace a structure at 45 York Mills Road that was destroyed by fire. Hogg's Hollow is certainly far from the tourist centre to the south, and is well worth exploring. With Yonge Street its main street, the community has a fascinating history that has long gone uncovered. Give Hogg's Hollow a look and you might stay awhile. I promise! This walk is for all walking levels. Please dress for the season and bring water. Our Hogg's Hollow adventure walk begins at the Yonge Street doors of the York Mills Subway station. We head south and downhill and return to our starting point. Hope to see you there! This tour has a ticket price of $15.00 per person! \*\* **Please note: Please e-transfer the ticket price when booking your space for this tour! You can e-transfer to the following email at:** **torontohistorywalks@gmail.com**

Hi everyone, we will be having our second Artists who create meetup group at the food court (Near the A & W) of Erin Mills Town Centre, and we look forward to seeing everyone who can make it this coming Saturday, April 11th at 5 pm. This will be a very casual and fun moment to create, connect and engage in conversation as we work on our own art projects. I also look to have a theme for this session to ignite our creativity and give us something to go off of if we're starting from scratch. The theme is Life, and the powerful thing it can be to be alive despite all the uncertainty and struggles we might face. I will be providing some art materials for those who need them, but of course, it's highly encouraged to bring your own. Here is the full address of the mall: [5100 Erin Mills Pkwy, Mississauga ON L5M 4Z5](https://www.bing.com/ck/a?!&&p=5d311852eda8388a98752d9e60a559294e636187efdb6acdad7ff1b4b53e5c93JmltdHM9MTc3MjMyMzIwMA&ptn=3&ver=2&hsh=4&fclid=15c0c239-89a7-69ee-04c2-d4b288666820&u=a1L21hcHM_Jm1lcGk9MH5-RW1iZWRkZWR-QWRkcmVzc19MaW5rJnR5PTE4JnE9RXJpbiUyME1pbGxzJTIwVG93biUyMENlbnRyZSZzcz15cGlkLllORERFRDhERjc4MTg0OUMxOSZwcG9pcz00My41NTg2NTA5NzA0NTg5ODRfLTc5LjcxMTU3ODM2OTE0MDYyX0VyaW4lMjBNaWxscyUyMFRvd24lMjBDZW50cmVfWU5EREVEOERGNzgxODQ5QzE5fiZjcD00My41NTg2NTF-LTc5LjcxMTU3OCZ2PTImc1Y9MSZGT1JNPU1QU1JQTA)

Our coffee shop meetup now takes place every other Saturday. Come out to meet and chat with your fellow members of the Toronto Social Anxiety Support group in a supportive environment. **IMPORTANT: This group is intended to provide a safe space for people with social anxiety who may feel inhibited in louder, more extroverted environments. Please respect the nature of this group and do not attend if you are not in this category. There are many other groups available on Meetup.** **When**: 5pm - 7pm **Where to meet**: Alternity Café, just west of St. George Street, on the south side of Bloor. Vegan café with a chill vibe. Here is their website: https://alternity.ca/pages/our-place **Reminder**: Like all our events, the group's code of conduct applies. Pls make this a successful outing by being courteous and respectful in language and behaviour, and supportive towards other members, especially those with higher anxiety. **Covid/flu safety**: If you are sick or have recently been exposed to someone who is sick, pls use your judgement about attending this event. You can always come to the next event when you feel better.

Let’s do some coding together at a cafe! No more working alone in the weekend. Here, we write code together. And I mean together together. Not occupying-the-same-space-but-separate together. Here’s how it works: Jennifer brings her mobile app project, tells everyone that it is like Pinterest for recipes and she’d like to work on the nav bar. Paul and Chloe think Jennifer's project is fascinating, and they join the group. They gather around Jennifer’s laptop and work on the nav bar for 2 hours. Jennifer is the one typing out the code while Paul and Chloe research, brainstorm, and offer suggestions. If you’re feeling stuck on your own project or need a motivation boost, bring it to mob programming! Want to learn by watching how others code and solve problems? Join someone else’s project at this event! Oh and we love your half-done projects that you are a bit embarrassed to share. Absolutely bring those to the event! **Discord**: We use Discord to share screen & code snippets during the event. Also feel free to share your projects here before the event! https://discord.gg/yvAGbh4PpD **Event policy**: * We have 0 tolerance for harassment. * We don’t allow the projects that are not meant to be shared in public such as school assignments, interview tasks, or trade secrets. * The goal is to write code. We discourage you from pitching business ideas here, doing code reviews, or spending the whole event on planning what to do. * Please buy a drink, and tip the barista well.

Singles Dance Party + 40 Crowd Saturday March 11th $20.00 cover 7.30pm -12.30 The Old Mill 21 Old Mill Rd. Join us for a fun-filled evening of dancing, mingling, and making new connections! Whether you're new in town or a seasoned single professional, this event is perfect for you. Let loose and show off your dance moves as we groove to the latest beats, from Bachata to classic hits. This social networking opportunity is ideal for singles over 40 Get ready to relive the magic of past events like the "Saturday Night Singles Dance Party @ The Old Mill" and "An evening of Dancing & Romancing . Don't miss out on this chance to mix and mingle with other singles in a lively and welcoming atmosphere. Grab your dancing shoes and get ready for a night to remember at our Singles Night Out! 416 236 8222.

🏙️🚶 OLD CABBAGETOWN, REGENT PARK & DISTILLERY DISTRICT WALK (9KM) 🚶🏙️ Historic Streets, City Contrasts & A Distillery District Finish Some walks show you just how many different versions of Toronto can exist within a few kilometres. Join us for a social city walk through some of Toronto’s most layered and contrasting neighbourhoods — from the storybook streets of Cabbagetown, to the revitalized energy of Regent Park, ending in the iconic Distillery District. Cabbagetown is known for having one of the largest collections of Victorian homes in North America — quiet, tree-lined streets that feel almost frozen in time. From there, we’ll move into Regent Park, where old Toronto meets new in one of the city’s most significant redevelopments. We’ll finish in the Distillery District, once home to the largest distillery in the world, now a vibrant pedestrian area full of brick buildings, art, and atmosphere. This is not a formal historical tour. It’s a social walk with light storytelling, good energy, and lots to take in along the way. 👉 **Don’t forget to join our WhatsApp group** – [CLICK HERE!](https://chat.whatsapp.com/H59mSCbsAi018gYANrKAnc?mode=ac_t) \*\*\* 🚶‍♂️ What We’ll Do We’ll meet outside the subway station and begin our walk into Cabbagetown, wandering through its charming residential streets before making our way toward Regent Park. As we move through the neighbourhood, you’ll see the blend of old and new Toronto — community spaces, modern builds, and the evolution of the area. From there, we’ll continue south toward the Distillery District, where the walk wraps up. You’re free to explore, grab a drink, or head out whenever you like. Please note: there will be some stairs along the route. \*\*\* 🌦️ Weather & Expectations This walk will happen in typical April weather — which means anything from sun to light rain. As long as it’s not extreme conditions or heavy downpour, we’ll be going ahead. Be prepared and dress accordingly. Comfortable shoes are important, and layers are always a good idea. Also — this is NOT a guided or formal historical tour. I’ll share context casually, but the focus is on being social and enjoying the walk. \*\*\* 🧢 Meetup Details 📍 Meetup Location: Outside the subway station 🫎 I’ll be wearing my Moose Hat ⏰ Meetup Time: 11:00 AM I will only wait 5 minutes. Early is on time. On time is late. We’ll begin promptly, so please plan ahead. End Point: Distillery District \*\*\* 🎟️ Meetup Fee: $5 cash in person or e-transfer to 📧 \*\*[mathewmaclean@hotmail.com**](http://mathewmaclean@hotmail.com%2A%2A/) This helps support the group and allows us to keep hosting events like this. Thank you for supporting community! 💖 \*\*\* 🎒 What to Bring Water Good walking shoes A small snack Weather-appropriate clothing (rain-ready if needed ☔) Please also use the washroom before arriving, as stops are limited. \*\*\* 🌈 Who Is This For? This group is open to anyone who wants to be social and make friends — whether single or not. We also host: 🎬 Movies 🚶 Walks & hikes 🎭 Arts & culture outings 🍽️ Restaurant gatherings There’s always something happening. \*\*\* REMEMBER: You’re welcome to just show up on the day if you’re unsure about your schedule. And as always, sometimes plans shift and events may need to be canceled — please keep an eye on updates. \*\*\* 👤 Organizer: Mathew Questions? Post on the event wall or email 📧 [torontomoviesandoutings@hotmail.com](mailto:torontomoviesandoutings@hotmail.com) Come for the history. Stay for the contrasts. Leave seeing Toronto just a little differently than before. 🏙️✨

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.

In this local meeting, you will discover knowledge that you can use to get over the past. The key to improving your personal motivation, self-confidence, and happiness is to get over your painful memories. When you become free of your past, you will be free from stress, anger, anxiety and depression. Studies show that negative emotions can affect your health. By being free of negative emotions, believe it or not, you will most likely even look younger, feel more energetic, and become healthier! 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 brought to you by the Dianetics and Scientology life improvement center.

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) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

Let’s try this popular Italian restaurant in Reynoldsburg. This is the menu: https://scaliristorante.com/#4e468054-0235-43e2-81c2-44e061341e9e

Are you passionate about supporting other men on their mental health journey? We’re building a movement of virtual and in-person men’s groups across Ohio — and we’re looking for group leaders who want to make a real difference with us. As a group leader, you’ll create a safe space where men can connect, reflect, and grow together. Training and support are provided — you just need heart, presence, and a willingness to lead. **Apply now to lead a group in your area:** 👉 https://form.jotform.com/taketimespeakyourmind/sym-group-leader-application Speak Your Mind is a mental health non profit dedicated to bringing our community together to end the isolation that leads to mental struggle and suicide. Learn more about them here: https://linktr.ee/taketimespeakyourmind

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD

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!