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Jeroen ter Heerdt is a Product Manager with Microsoft.

He works on Power BI and is passionate about "all things data"; whether it is about databases, data warehousing, BI, big data, data visualizations, self-service BI, advanced analytics, real-time BI or anything even remotely related to data or insight.

He strives to apply these concepts in his life as much as possible. Jeroen combines enthusiasm, vision, and hands-on experience into his talks. His blog is http://www.dutchdatadude.com and he can be found on social media at @jaypowerbi.

Seasoned experts Jeroen ter Heerdt, Madzy Stikkelorum, and Marc Lelijveld help you master visual calculations in Power BI for transformative data insights Microsoft Power BI Visual Calculations: Simplifying DAX is a comprehensive guide that demystifies the innovative feature of visual calculations in Power BI. Jeroen, a Principal Product Manager at Microsoft, Madzy, a Data Analytics Consultant, and Marc, a Microsoft Data Platform MVP, bring their extensive expertise to this book, offering you a practical approach to mastering visual calculations. The book is designed to simplify DAX, making it accessible to beginners and empowering you to transform raw data into actionable insights. You will learn to implement visual calculations, understand their benefits, and apply them effectively in real-world scenarios, ultimately enhancing your ability to make data-driven decisions. By reading this book, you will: Understand the fundamentals of visual calculations in Power BI Create your first visual calculation with step-by-step guidance Explore advanced concepts like resetting context in visual calculations Compare visual calculations with other Power BI calculation options Master the performance characteristics of visual calculations Utilize specific functions designed for visual calculations Implement practical use cases like running sums and moving averages Enhance visual calculations with regular DAX expressions Optimize operational processes using data-driven insights Unlock the full potential of Power BI for strategic decision-making About This Book For Power BI users who want to simplify DAX and unlock the full potential of visual calculations without the usual complexities For business executives, managers, and data enthusiasts looking to transform raw data into actionable insights for strategic decision-making

Welcome to the virtual October user group meetup run over Teams!

This time we're welcoming back Jeroen (Jay) ter Heerdt of Microsoft - the man that brought us visual calculations. His team had another couple of ideas, and they are going to change everything in semantic modeling.

In his own words: September brought two major new features to DAX: User Defined Functions and Calendar-based time-intelligence. Join this session to learn all about them and discover why experts say "semantic modeling will never be the same again".

You do not want to miss this!

Jeroen Janssens and Thijs Nieuwdo join me to chat about all things Polars. We discuss the evolution of the Polars library, its advantages over pandas, and their journey of writing 'Python Polars: The Definitive Guide.'

Learn how to transform your Python code into a command-line tool. Jeroen Janssens, author of Data Science at the Command Line, guides you through the process of turning your scripts into reusable, executable tools, integrating them into your data workflows and harnessing the power of the Unix command line.

AI Learning Week

Dates: April 28 – May 1, 16:00 - 18:00 CET Speakers: Steven van Duin, Jeroen Overschie, Lysanne van Beek, Caio Benatti Moretti

Join us for Xebia Academy's AI Learning Week, a complimentary four-day webinar series designed to enhance your understanding of both the technical and strategic facets of Artificial Intelligence.

From April 28 to May 1, 2025, at 4 PM CET daily, engage with industry experts through two distinct tracks:

• Base Track: Delve into AI strategies, ethics, and how AI can drive business success.
• Tech Track: Explore practical skills in Prompt Engineering, AI coding, and Generative AI.

Agenda Highlights:

• April 28: AI Strategies for Leaders: Ethics, Governance, and Business Success with Steven van Duin
• April 29: Practical GenAI: Building LLM-powered Applications with Jeroen Overschie
• April 30: Prompt Engineering Made Easy: Quick Tips to Get More out of ChatGPT with Lysanne van Beek
• May 1: PDFs – When a Thousand Words Are Worth More Than a Picture (or Table) with Caio Benatti Moretti

Don't miss this opportunity to learn from seasoned professionals and advance your AI expertise. Secure your spot today!

*** English below ****

Begin Maart zijn de Power BI usergroup dagen in Utrecht. Daarom is ook Jeroen Ter Heerdt (Principal Product Manager Power BI) in Nederland. En hij komt na een vraag van ons ook naar Groningen!! Samen met zijn collega Tori Pinheiro (Principal Product Manager Power BI / Designer) komt hij op donderdag 6 maart 12:30 tot 14:30 voor een gastcollege aan de Hanze Hogeschool. Waarbij ook jullie als community leden welkom zijn! Hij gaat het hebben over Power BI (what else...) & softwareontwikkeling binnen Microsoft & werken bij een US Big Tech company. Tori gaat waarschijnlijk een overzicht van Fabric verzorgen. Maar er is ook ruimte voor interactie en vragen.. Dit is natuurlijk een uitgelezen kans om van alles te ervaren en te delen met iemand die dicht bij de bron zit. Zaal Hanze, ZP 7 B1.160

****************** At the beginning of March, the Power BI user group days will be held in Utrecht. Therefore, Jeroen Ter Heerdt (Principal Product Manager Power BI) will also be in the Netherlands. And he will come to Groningen after a request from us!! Together with his colleague Tori Pinheiro (Principal Product Manager Power BI / Designer), he will give a guest lecture at Hanze University of Applied Sciences on Thursday, March 6th, from 12:30 to 14:30. Community members are also welcome! He will talk about Power BI (what else…) & software development within Microsoft & working at a US Big Tech company. Tori will likely provide an overview of Fabric. But there will also be room for interaction and questions. This is, of course, an excellent opportunity to experience and share everything with someone who is close to the source.

Room: Hanze, ZP 7 B1.160

This is the moment that changes everything. From today, writing DAX will never be the same. Discover how in this session! The Power BI team has been hard at work on groundbreaking advancements in DAX calculations, specifically designed to simplify adding common business metrics like running totals or comparisons to the first value. Imagine this: creating complex calculations without even typing DAX! In this session, we’ll unveil this revolutionary new feature that will transform how you approach DAX, making it faster and easier than ever. Don’t miss this chance to experience the future of DAX – prepare to be amazed!

We have exciting news!

As we alluded to during our last virtual meetup with Jeroen ter Heerdt, we're doing an in-person meeting in Stockholm the same week as the European Fabric Conference! This means that some people that usually are not physically in Stockholm can join us.

We have one session from Jon Stjernegaard Vöge on moving from Power BI to Fabric and what Fabric means for a Power BI user, and then we are hosting a panel discussion with several speakers from the community on this topic - a better opportunity for asking questions can't be found!

Event agenda:

17:30 - 18:00

• Welcome and mingle

18:00 - 20.30

• From Data Analyst to Analytics Engineer with Microsoft Fabric - Jon Stjernegaard Vöge
• Food and drinks
• Discussion panel on moving from Power BI to Fabric

Come join us on Monday, September 23rd at Zington!

******************************************************************************* Please note: due to the need to figure food and space (there is a maximum number of attendees we can fit) you MUST sign up at the event link here: https://event.zingtongroup.com/swedish-power-bi-and-fabric-user-group-meetupzington *******************************************************************************

We are very happy to announce that we are organising the 17th edition of the Eindhoven Data Community meetup together with our friends from Picnic! This time we will be back August 29th, at one of our favourite locations, the Skybar in Microlab!

Starting in one Dutch town in 2015, Picnic now serves over 60 cities in both the Netherlands and Germany. The secret to their success? An end-to-end business and a just-in-time supply chain. From the app-only store, forecasting of orders, warehouse fulfilment, to the evolving distribution strategy of their fleet of electric vehicles, they have build everything in-house on their own developed software. During the meetup, Sven and Job, both Machine Learning engineers at PicNic, will talk about their cloud agnostic, internal ML platform running on Kubernetes.

Talk 1: Optimizing Picnic's last mile delivery using our ML Platform As an online supermarket and tech company, Picnic has more than 20 ML models in production. These models play a critical role in optimizing our supply chain and last-mile delivery logistics. In this talk, we will dive deeper into the stop-time model, which predicts our customer delivery times. Having an accurate forecast for our customer delivery times enables us to plan efficiently while still providing a pleasant customer experience. Furthermore, we will show how our internal ML platform enables us to run these models effortlessly and discuss our latest addition to the platform: the Feast feature store.

Talk 2: Are you ready for MLOps? 🫵 MLOps has survived the hype cycle and is gaining in maturity. But are we looking at MLOps for answers for the right things? No matter how valuable MLOps can be for you, without proper building blocks in place MLOps cannot live up to its full potential. What are the prerequisites for MLOps? What parts of MLOps should you focus on? When should you even start thinking about MLOps, or when is ‘plain’ DevOps wiser to focus on first? Join us in this session to learn more!

Let's learn more about MLOps together! In this talk, we will share with you our take on when and why MLOps is relevant for you. So, you learn when and how to apply MLOps the right way to get most value out of it. Our collective experience entails multiple years of consulting companies on the topic, as well as teach trainings on MLOps. Having applied MLOps in many contexts and situations allowed us to see commonalities between them — and those we would like to share with you! Why? Because we love sharing knowledge!

Program

• 17:00 – 18:00: 🍕Pizza
• 18:00 – 18:10: 🎤 Welcome
• 18:10 – 19:00: 🎤 Sven Arends & Job Almekinders: Optimizing Picnic's last mile delivery using our ML Platform
• 19:00 – 19:15: ⏸️ Break
• 19:15 – 20:00: 🎤 Jeroen Overschie & Jetze Schuurmans - Are you ready for MLOps?
• 20:00-21:00: 🥤Drinks

Speaker 1: Sven Arends Sven Arends is a ML Engineer at Picnic. Sven is currently responsible for Picnic’s ML models for the Distribution domain. These models forecast e.g. the amount of time needed to deliver our groceries at customers. Previously Sven worked as platform engineer leading the Kubernetes Accelerated Compute initative in Picnic and worked as a Data Scientist for a Finnish startup. Sven has holds a Computer Science MSc degree from the TU/e.

Speaker 2: Job Almekinders Job Almekinders is a MLOps Engineer at Picnic, where he focuses on scaling and standardizing machine learning usage by building an internal ML platform. He has prior working experience as a Data Platform Engineer at HelloFresh and Data Engineering Consultant. Job holds a MSc degree in Data Science & Entrepreneurship from the Jheronimus Academy of Data Science (TU/e & TiU).

Speaker 3: Jeroen Overschie Jeroen is a Machine Learning Engineer at Xebia Data (formerly GoDataDriven), in The Netherlands. Jeroen has a background in Software Engineering and Data Science and helps companies take their Machine Learning solutions into production.

Besides his usual work, Jeroen has been active in the Open Source community. Jeroen published several PyPi modules, npm modules, and has contributed to several large open source projects (Hydra from Facebook and Emberfire from Google). Jeroen also authored two chrome extensions, which are published on the web store.

Speaker 4: Jetze Schuurmans Jetze is a well-rounded Machine Learning Engineer who is as comfortable solving Data Science use cases as he is productionizing them in the cloud. His interests include MLOps, GenAI and Cloud Engineering. As a researcher, he has published papers in Computer Vision, Natural Language Processing and Machine Learning in general. Jetze loves sharing knowledge during community events and by giving trainings.

Our next meetup will feature Jeroen ter Heerdt, Principal Product Manager at Microsoft, who will share his insight on Visual Calculations.

Don't miss this opportunity to learn from the expert that owns this new feature inside Microsoft Engineering!

It's an online Teams meetup, so whether you're back at work or joining from a beach, you can participate.

See you in August!

External registration required at nyhackr.org.

Note the 7 PM start time.

For the meetup right before the 10th Anniversary New York R Conference we have another long-time meetup member and repeat NYR speaker Jeroen Janssens talking about Polars and plotting.

After the talk we will randomly select two attendees (both in-person and virtual) to receive free tickets to The New York R Conference taking place May 16-17.

Thank you to NYU for hosting us.

Everybody attending must RSVP through the registration form at nyhackr.org. There is a charge for in-person and virtual tickets are free. Space is extremely limited and in-person registration closes at 2 PM the day of the talk.

About the Talk: Sure, Polars is fast, blazingly fast even. But how do you turn those dull DataFrames into something insightful? Fortunately, Python provides a plethora of packages, each with its own set of features, assumptions, and pitfalls.

In this talk, I'll walk you through a couple of packages to create pretty pictures. This includes hvPlot for quick plotting, Bokeh for interactive visualizations, and Plotnine for leveraging the grammar of graphics in Python. In addition, I'll demonstrate the Great Tables package for creating, well, great tables.

By the end you'll have a good idea of what each package has to offer, when to use which, and how to use them in combination with Polars.

About Jeroen: Jeroen Janssens, PhD, is a data science consultant and certified instructor. His expertise lies in visualizing data, implementing machine learning models, and building solutions using Python, R, JavaScript, and Bash. He’s passionate about helping and teaching others to do such things. Jeroen works as a Senior Machine Learning Engineer at Xomnia in Amsterdam. Prior to that, he ran, for six years, his own company, Data Science Workshops, which was a training and coaching firm that organized open enrollment workshops, in-company courses, hackathons, and meetups. Clients included Amazon, eHealth Africa, Schiphol Airport, The New York Times, and T-Mobile.

Previously, he was an assistant professor at Jheronimus Academy of Data Science and a data scientist at Elsevier in Amsterdam and several startups in New York City. He is the author of Data Science at the Command Line (O’Reilly Media, 2021). Jeroen holds a PhD in machine learning from Tilburg University and an MSc in artificial intelligence from Maastricht University.

He lives with his wife and two kids in Rotterdam, the Netherlands.

The venue doors open at 6:30 PM America/New_York where we will continue enjoying pizza together (we encourage the virtual audience to have pizza as well). The talk, and livestream, begins at 7:00 PM America/New_York.

Remember, register at nyhackr.org.

Visual Calculations - Making DAX Easier

This is it. The day that writing DAX changed forever. For the last 2.5 years, the Power BI team has been working on exciting things related to DAX calculations, specifically targeted at making it easier to add typical business-type calculations (such as running totals or vs-first). Would you believe it if we told you there is an easy way to get complex calculations done quickly?

In this session, we will talk about this exciting development. Join this session to learn more about this new feature which will make writing DAX statements so much easier and faster. Get ready to get your mind blown!

Jeroen ter Heerdt is a Product Manager with Microsoft. He works on Power BI and is passionate about "all things data"; whether it is about databases, data warehousing, BI, big data, data visualizations, self-service BI, advanced analytics, real-time BI or anything even remotely related to data or insight. He strives to apply these concepts in his life as much as possible.

Jeroen combines enthusiasm, vision, and hands-on experience into his talks.

His blog is http://www.dutchdatadude.com and he can be found on social media at @jaypowerbi. https://www.linkedin.com/in/jeroenterheerdt/

Speaker: Jeroen (Jay) ter Heerdt Start Date: Thu, Apr 11th 2024 · 7:00 PM EEST (4:00 PM GMT) Language: ENGLIGH Location: Online (link visible for attendees)

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Description:

This is it. The day that the way that DAX became easier.

After this, how you write DAX changes forever. Learn all about it in this session! The Power BI team has been working on exciting things related to DAX calculations, specifically targeted at making it easier to add typical business-type calculations (such as running totals or vs-first). Would you believe it if we told you that you don’t even have to type DAX anymore and still be able to get complex calculations done quickly? In this session, we will talk about this exciting new feature!

Join this session to learn more about this new feature which will make writing DAX statements so much easier and faster. Get ready to get your mind blown! See the future, today.

===============================================================

At the end of the Meetup we'll have a Raffle with prizes offered by Enterprise DNA: 2 (two) 1 year FREE Membership Licenses on EDNA Platform for two lucky winners from the Live attendees !

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Speaker: Jeroen (Jay) ter Heerdt Senior Product Manager at Microsoft

Jeroen ter Heerdt (aka the Dutch Data Dude) is a Product Manager with Microsoft.

He works on Power BI and is passionate about "all things data"; whether it is about databases, data warehousing, BI, big data, data visualizations, self-service BI, advanced analytics, real-time BI or anything even remotely related to data or insight.

He strives to apply these concepts in his life as much as possible. Jeroen combines enthusiasm, vision, and hands-on experience into his talks.

Connect with Jay here:

• LinkedIn
• X (former Twitter)
• Blog - http://www.dutchdatadude.com

Join us for a special event the night before Kafka Summit London 2024 as we delve into the fascinating world of Kafka Streams. This meetup will focus on the critical role Kafka plays in enabling large enterprises connect siloed systems in large organisations.

Date and Time: 🗓️ Monday 18th, ⏰ 5:00 PM - 7:00 PM 🕘

Venue: Keyboards & Dreams Royal Docks, Unit 10, 4 Hoy Street, E16 1XD

Event Theme: Connecting enterprise data with Kafka Streams

Attending Brands: OSO, Axual, Norsk Helsenett

Networking: Pizza + Beer at the end

Schedule: 17:00 - 17:15 Welcome intros 17:15 - 17:45 Talk 1: Disconnecting our systems with Kafka (including Q&A - hosted by OSO) 17:45 - 18:15 Break (Pizza & Drinks) 18:15 - 18:40 Talk 2: Kafka Streams use cases using KSML 18:40 - close Networking (Drinks)

🎙️ \~Talk 1\~ Talk Title: Disconnecting our systems with Kafka

Summary: In NHN, we have many teams that have spawned from a patchwork of different organisations. Thusly, we have many applications, and teams, that operate as silos. Often aided by the requirements of the health care sectors governance rules about data that needs to be compartmentalised. Here we'll talk about how we are giving teams a way to collaborate and share data across silos, but without creating hard couplings.

Key talk takeaways:

• Kafka as a secure datahub between silos
• Meeting diverse needs in a larger org, but still delivering efficiently
• Empowering collaboration

🗣️ Speakers: Simon Randby & Fredrik Bekkevold - Principal Developers at Norsk helsenett

Simon works with connecting the healthcare sector in Norway at NHN. He has previously touched upon many disciplines, from refining Programvare­verkstedet's operations, working on Samfundet's websites and marketing, connecting children with coding and robotics at Kodeløypa, and making awesome demos with the Ninjadev group. Loves cooking and music.

Fredrik has over 20 years of experience creating solutions, I have seen a lot. The last 6 years I have worked primarily in healthcare and Fin-Tech. Both domains have similarities and are both seen as complex. By using the right mindset, technology and just being polite, I try to reduce complexity and make things happen. And sometimes great things do happen.

🎙️ \~Talk 2\~ Talk Title: Kafka Streams use cases using KSML

Summary: KSML stands for Kafka Streams Markup Language. It allows developers to write Kafka Streams apps using a combination of YAML and Python. In this talk we will demonstrate a simple use case where several Municipal Home Care Service Providers are responsible for collecting heartbeat, sleep and oxygen saturation readings from patients, and for sharing them centrally. These readings are then picked up and enriched (joined) with the patient's personal information to be exposed to researchers downstream.

Key talk takeaways:

• Learn how to write streaming applications using nothing more than YAML and some Python snippets.
• You will learn how to read and modify the flow of messages.
• Know how to get your hands on KSML.

🗣️ Speaker: Jeroen van Disseldorp - CEO & Founder of Axual Jeroen is an entrepreneur, solution architect and all-round techie. In 2015 he founded Axual, a Dutch company that created an enterprise event streaming platform based on Apache Kafka. Before that he was Technology Officer Open Source for Capgemini where he gained extensive experience in sectors like energy, banking and central government.

(en español a continuación)

Visual calcs are coming to Power BI and Jeroen wants to tell us about them! Join us to learn what they are and how you can leverage them to make your DAX-life easier and faster.

Los cálculos visuales estan llegando a Power BI y Jeroen quiere explicarnos en qué consisten! Ven y aprende qué son, y como los puedes utilizar para hacer tu vida DAX más fácil y más eficiente. Esta sesión tendrá interpretación en directo al español por Google Meet. Hay que conecetarse al enlace de Teams en el PC y se recomienda utilizar la aplicación del móvil para entrar en google meet.

Info Google Meet (solo para audio en español): Enlace de la videollamada: https://meet.google.com/sww-fggs-esu O marca el: ‪(ES) +34 822 11 30 96‬ PIN: ‪546 544 967‬# Más números de teléfono: https://tel.meet/sww-fggs-esu?pin=4018472099382