Cryptography

*this event is advertised elsewhere so there will be more people coming than stated* **✨ Welcome to Conundrum Corner at The Union Jack pub, Southwark! ✨** Step inside and join a gathering *of* open minds and kind hearts. Whether you bring a conundrum of your own that you are experiencing or simply your listening ear, you’ll find a welcoming space to share, reflect, and explore life’s tricky questions together. 🌿 **What to expect:** * You’re invited to share a conundrum, dilemma or question that you yourself are experiencing. * We’ll vote on three intriguing ones to explore more deeply. * With a few extra details in hand, we’ll break into small groups for thoughtful discussion. * Then, we’ll come together as one big group to share insights, perspectives, and perhaps even some fresh solutions. The atmosphere is **analytical yet empathetic, thoughtful yet light-hearted**, and always non-judgmental. Whether your conundrum is personal, professional, or just a head-scratcher, we’re here to help unravel it together. 💸 There’s no set fee to attend, but we do ask for donations on the night to cover costs - which are warmly appreciated! 🍷 Please also support our lovely hosts, Jade and co., by buying yourself a drink at the bar (and food’s available if you fancy a bite). 💡 **What’s a conundrum, you ask?** A conundrum is any dilemma, crossroads, or confusion in your life—big or small. It could be a **"chicken and egg"** situation, a **"catch-22"**, or a **"have your cake and eat it"** kind of puzzle. Sometimes, life just throws us complex, messy questions—and that’s what we’re here to navigate together. Once our deep discussions wind down, we’ll slip into **pub mode**—a chance to relax, connect, and continue chatting with newfound friends. **🛡️ Code of Conduct - *please note*** Conundrum Corner is committed to providing a safe and respectful environment for all attendees. Any abuse, harassment, or inappropriate behaviour towards other attendees, whether during the event or in any contact related to the event afterwards, will result in permanent removal from the Meetup group and exclusion from future events. Come along for an evening of intriguing conversations, fresh perspectives, and a touch of serendipity. Looking forward to seeing you there! Helena x

Join us for a relaxed and friendly photo walk around beautiful **Greenwich** — perfect for anyone who enjoys photography, whether you're using a DSLR or just your phone. **EVENT DETAILS** **Location:** Greenwich **Date:** 04.05.2026 **Time:** 14:00 – 16:00 **Meeting Point:** Outside **[The Gipsy Moth Pub](https://maps.app.goo.gl/NaC8dwh4xE3HtWyb6)** Address: 60 Greenwich Church St, London SE10 9BL **EVENT FLOW** **14:00** \| **Meet & Connect** We’ll gather at the meeting point \*\*[The Gipsy Moth Pub ](https://maps.app.goo.gl/NaC8dwh4xE3HtWyb6)\*\*introduce ourselves, and warm up creatively. **14:10** \| **Main Walk (Greenwich)** We’ll explore the charming streets, riverside views, and hidden corners of Greenwich, with plenty of opportunities to take photos, share ideas, and just enjoy being out and about. **16:00** \| → 🍻 **Optional pub afterwards** After the walk, anyone who wants to stay on is welcome to join for a drink and a chat. **WHAT TO EXPECT** Bring your: • Film camera • Digital camera • Smartphone • Curiosity Whether you’re a beginner, a seasoned photographer, a content creator, or just creatively curious — you’re welcome here. Come solo or bring friends. Spots are limited — reserve your place on Meetup ASAP. **After registering:** • Join our [WhatsApp group](https://chat.whatsapp.com/L8YJwGdVTR6GpVo2hBzBE1?mode=gi_t) for live updates and meeting point details • Follow [@takeaphotowalkcommunity](https://www.instagram.com/takeaphotowalkcommunity/) • Tag us when you share your photos so we can feature the community If you can’t make this one, we host monthly walks — this is just the beginning for London. **ABOUT TAKE A PHOTO WALK** Founded in Barcelona in July 2024, Take a Photo Walk connects photographers and creators around the world through real-life creative experiences. Now London is part of the story.

Join us for another Holiday Special Bonus session at The Liberty Bounds Wetherspoon, Tower Hill. ☀️ I’ll put table number in the group discussion. 🍻

NO EVENT - Monday 4 May NO EVENT - Monday 4 May NO EVENT - Monday 4 May

**BOOK HERE**: https://sportas.co.uk/games/48278 **Game Description:** 🧡Come and join us for a casual friendly & social badminton session in Archway. This venue consists of 4 courts in total. 🚨Directions🚨 📍Enter via Thornbury Square road and walk all the way downhill. (Note: you won’t be able to enter through the school!) 🚶‍♂️10 minute walk from Archway or Highgate tube stations (Northern Line) 🚗 Free car parking on site 🚿 Showers, changing rooms, water fountain & toilets are available in **Rules** 🏸The session is for mixed ability players so please be positive and encouraging to all players. We highly encourage you to read the rules for classic doubles prior to the session so we can run the games smoothly. 👯‍♀️We play doubles for the whole time and keep rotating courts so everyone gets to play with each other. We use Yonex Mavis 300 Nylon Shuttle cocks. We also have a few spare rackets.

This event will involve a relatively short meeting at a café or pub near Brompton Cemetery. We will; -grab a coffee -share any poems or poem drafts that you're working on (only if you wish to!) -short (50 words) creative writing challenge using Victorian cemetery related prompt words (again, optional) -a brief history of this cemetery and any famous poet and novelist graves to look out for -finally, break away to stroll in the cemetery grounds to appreciate the beauty, peace, nature, Victorian aesthetic and architecture. Please note that it isn't possible to have organised tour walks around the cemetery itself without parks permission, so we will need to break away informally for the cemetery stroll.

We're excited to invite you to ***our next Meetup***! Join fellow graph enthusiasts, Neo4j developers, and members of the AI community as we explore how graphs, knowledge graphs, and context engineering can unlock smarter applications and better answers. We look forward to connecting with the community to exchange ideas on graphs, tech, and AI - join the discussion! Session 1: **From Weak Assistants to Super Agents** Sefik Serengil, Senior Software Developer - Neo4j Session 2: **The Latest on Working with Agents** Baptiste Fernandez, DevRel - Tessl A synthesis of data, experiments, and developer feedback on how to build with agents and steer them in practice.

**Venue:** Riverbank House, 2 Swan Ln, London EC4R 3AD **Please note:** 1\. 🚨🚨🚨 A valid photo ID is required by building security\. 🚨🚨🚨 2\. This event follows the [NumFOCUS Code of Conduct](https://numfocus.org/code-of-conduct). Please familiarise yourself with it before attending. If your RSVP status says "You're going" you will be able to get in. No need to show your RSVP confirmation when signing in. If you can no longer make it, please unRSVP as soon as possible. **Code of Conduct:** This event follows the NumFOCUS Code of Conduct. Please get in touch with the organisers with any questions or concerns. As always, there will be free food and drinks, generously provided by our host, Man Group. **Main Talks** 1. [Robin Linacre](https://www.linkedin.com/in/robinlinacre/) - **Rapid deduplication and fuzzy matching of large datasets using Splink** This talk introduces Splink, a free and open source Python library for probabilistic record linkage and deduplication at scale. I’ll explain the core ideas behind the approach, show how it can be used in practice, and reflect on the opportunities of building open source tools from within the public sector. Data deduplication is a common data quality challenge: it arises whenever multiple records are collected about the same person, organisation, or entity without a shared unique identifier. This talk will introduce the core ideas behind probabilistic record linkage and show how Splink, a free and open source Python library developed at the UK Ministry of Justice, can be used to link and deduplicate large datasets quickly and accurately. I’ll cover the practical steps involved in training linkage models, using unsupervised learning, improving performance and accuracy, and visualising results and diagnostics. I’ll also touch on what it has been like to build and maintain open source tooling from within the UK public sector, and the opportunities this creates for solving problems at citizen scale. The talk is aimed at people with basic experience working with tabular data in Python, and assumes no prior knowledge of record linkage. 2. [Filip Makraduli](https://www.linkedin.com/in/filipmakraduli/) - **Small Model Inference Infrastructure: Lessons Beyond vLLM** Embedding models are evolving rapidly, from dense-only architectures, to hybrid dense+sparse (BGE-M3), multi-vector late interaction (ColBERT), and vision-language models (ColQwen2, SigLIP). Yet while LLM serving infrastructure is well-established (vLLM, SGLang), small model deployment still relies on inefficient single-model containers or custom-built systems. Production teams face a dilemma: deploy dozens of single-model containers with 5-10% GPU utilization, or invest months building complex multi-model infrastructure. This talk explains some of the key concepts of embedding inference and how it is different to LLM inference. 3. [Ian Ozsvald](https://www.linkedin.com/in/ianozsvald/) - **Build your own LLM, Live, with MicroGPT** Andrej Karpathy's MicroGPT is a single file no dependency mini GPT, you can run it live with me. We'll talk about how GPT works, we'll look at the code, we'll reflect on the Torch-based nanoGPT "big brother" and you'll end the talk with stronger intuitions about how our next best token guessing overlords are working. Plus you'll have a mini GPT running on your laptop in 200 lines of Python. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Logistics** * Doors open at **6.30 pm** (get there early as you'll need to sign in with building security). * Talks start at **7:00 pm**, with drinks afterwards from **9:00 pm** at The Banker (EC4). We have reduced capacity for this event, but there will be plenty of people to discuss data science questions with. Please unRSVP in good time if you realise you can't make it. We're limited by building security on the number of attendees, so please free up your place for your fellow community members. If you want me to trim lightning talks down to two or shorten any abstracts, say which ones.

*❗️Event Announcement.* 🎟️ **Register via** [Luma](https://luma.com/5hfjgv9b) — we do not accept sign-ups through Meetup. 📅 **7th May** · Doors 6:00 PM, Start 6:30 PM **How Many SKILL. md Files Is a Profession?** *Discovering accounting's patterns from the corrections of human experts* **🎤***Nikolay Turusin, Data Science Lead · Anna Money* A profession decomposes into a finite library of procedural patterns — smaller than you'd expect. And you don't find them by interviewing experts. You find them by watching where experts correct the system. Nikolay is building a production UK Corporation Tax engine on GenAI. This is his field report: what the right unit of work looks like inside an LLM system, why this kind of automation suddenly becomes tractable, and what expert-bounded self-improvement means when you're shipping to real users. Candid talk. Open discussion. Bring questions.

Our monthly Causevest Meetup. ( This is just a chilled out afterwork spot where we eat drink and talk crypto) Learn about all cryptocurrencies investing, security , wallet setup, ask me anything. Guest speakers and obtain a new insight into the possibility of blockchain technology with our development team. To be updated - Join us on telegram https://t.me/joinchat/FuQGSRJkhCx3gEdlupYL9g

ATTEND IN PERSON OR ON ZOOM (link upon registration) NB **This event will now take place at a different venue: the Café of [St. Hilda's East Community Centre](https://www.google.com/maps/@51.5244243,-0.0746385,17z?entry=ttu&g_ep=EgoyMDI0MDkwNC4wIKXMDSoASAFQAw%3D%3D), 18 Club Row, London E2 7EY. The nearest station (just a few minutes walk) is [Shoreditch High Street](https://www.google.com/maps/place/Shoreditch+High+Street/@51.5237626,-0.0741518,16.75z/data=!4m6!3m5!1s0x48761cb7237e45d3:0x832e68d6f5c3b9b0!8m2!3d51.5232573!4d-0.0754661!16s%2Fg%2F1hhvv83t7?entry=ttu&g_ep=EgoyMDI0MDkwNC4wIKXMDSoASAFQAw%3D%3D) (Overground). Apologies for any inconvenience.** This event takes place on Tuesday as Monday is a public holiday in the UK This talk will focus on a single question: ‘Where do you belong?’ The idea of ‘home’ reflects one of the deepest and most universal of human experiences. ‘Homes’ may be physical, emotional, intellectual or cultural – they reflect aspects of life with which we identify, where we feel comfortable (or challenged) and where we belong. They are a defiant response to our awareness of the vastness of space. From Diogenes and Buddha to Nietzsche and Heidegger, we’ll be looking at the experience of belonging, and exploring ways in which it shapes our thinking about the nature of self, ethics and politics. Over the last 50 years, **Mel Thompson** has written more than 40 books on philosophy and religion and is probably best known for the philosophy titles in the long-running ‘Teach Yourself’ series. His website is at [essexthinker.com](http://essexthinker.com/). Event video teaser: [https://youtu.be/CPiG1qCOyqM](https://youtu.be/CPiG1qCOyqM) For the full programme of events pls see [pfalondon.org](http://pfalondon.org) This event is supported by The Royal Institute of Philosophy's [Local Partners Programme](https://royalinstitutephilosophy.org/news/fund-your-event/)

Join me for a small, mindful photography walk in nature. (**NOTE Time is 9:00 AM EST(Meetup is having technical Issue))** This is a slow, intentional gathering — not focused on fitness or perfect photography — but on simply pausing, observing, and being present. We’ll walk at a gentle pace, with moments of quiet, and a few light prompts to help you notice details you might normally miss. 📷 You don’t need any photography experience — a phone camera is enough. This is also not a business networking event. It’s a calm space to connect with nature and, if it feels natural, with like-minded people. 🌿 What to expect: • A slow-paced, relaxed walk • Moments of silence and observation • Simple reflection prompts 📍 Location: [ Red Trabue Nature Preserve] ⏱ Duration: \~60 minutes This is a small, initial gathering as I begin creating this space through WellGratiVibes — a blend of mindfulness, nature, and quiet connection. If this resonates with you, you’re welcome to join.

When judging morality, should we prioritize **intentions/duty** or **outcomes/results**? It introduces two influential philosophers as representatives of these approaches. * **Immanuel Kant (deontology):** An action is moral when it is done from **duty** and follows rational, universal principles (the **categorical imperative**). Certain acts—like lying—are wrong regardless of the consequences; you can’t do a wrong thing for a right reason. * **John Stuart Mill (utilitarian consequentialism):** The morality of an action is determined by its **effects**, specifically how much **happiness/well-being** it produces. Mill argues that some pleasures are “higher” than others, and that good intentions don’t redeem harmful outcomes. ## Discussion Questions 1. **The lying dilemma:** A murderer comes to your door and asks if your friend is hiding inside. Kant would say you must not lie. 2. **Can good intentions rescue a bad outcome?** 3. **The organ harvest problem:** A surgeon has five patients dying of organ failure and one healthy patient in for a checkup. Killing the one to harvest organs would save five lives, and the math works out for the utilitarian. Why does this feel so deeply wrong? Is that feeling a point in Kant's favor, or just a bias we should overcome? 4. **Do rules need exceptions?** Kant insists moral rules must be universal, with no exceptions. But most of us can imagine extreme scenarios where any rule seems like it should bend. Does the need for exceptions fatally undermine deontology, or is the strength of the system precisely that it refuses to bend? 5. **Who gets to calculate the consequences?** Utilitarianism asks us to maximize good outcomes, but we're notoriously bad at predicting consequences. If we can't reliably know the results of our actions, is it practical to base our entire moral system on outcomes? Does this uncertainty push us back toward rules and principles? 6. **Everyday morality:** Think about a real moral decision you've made recently, even a small one. Did you reason more like a Kantian (what's the right thing to do in principle?) or more like a utilitarian (what will produce the best result?)? Do most people naturally lean one way? 7. **Justice vs. the greater good:** A town can prevent a deadly plague by sacrificing one innocent person. The greater good is clearly served. But is it just? Can an action be morally right and deeply unjust at the same time? 8. **The big synthesis question:** Are these two systems actually opposed, or do they often arrive at the same answers by different paths? Is it possible that we need both: rules to guide us in the moment and consequences to evaluate systems and policies over time?

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow

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

**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: This month John Lairson will share a notebook describing the Alpaca (Paper) Trading API and discuss different algorithms for evaluating stock trades. 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

Private Group. Closed to the Public Knowing ourselves and understanding our abilities is the first step toward wielding our gifts with control and accuracy. In subsequent classes we will verify and hone our talents with activities and discussion. These are hands-on workshops and participation is expected. The goal of our series will be to develop expertise in areas of particular interest such as mediumship, channeling, divination, healing and, etc.. Our ultimate directions will be determined by class members as we evolve. I look forward to sharing and discovering with you. - Cynthia