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A matrix is singular if its rows are arithmetic sequences
Look at the following matrices. Do you notice anything that these matrices have in common? If you noticed that the rows of each matrix are arithmetic progressions, good for you. For each row, there is a constant difference (also called the "increment") between adjacent elements. For these examples: In the
SAS graphs for R programmers - needle plots
This is another in my series of blogs where I take a deep dive into converting a customized R graph into a SAS ODS Graphics graph. This time the example is a needle plot (that's essentially like a bar plot, with lots of tiny bars, plotted along a continuous xaxis).
Generate random points on a sphere
In a previous article, I showed how to generate random points uniformly inside a d-dimensional sphere. In that article, I stated the following fact: If Y is drawn from the uncorrelated multivariate normal distribution, then S = Y / ||Y|| has the uniform distribution on the unit sphere. I was
Why treating customers fairly should be a top priority
In my position as an independent customer experience expert on the SAS Collaborators Programme, I’ve been delving into the detailed results and findings from its latest piece of CX research: Experience 2030: Has COVID-19 Created a New Kind of Customer? The exercise set out to discover how attitudes have changed,
AI Research Above the Supermarket
Globus (Rouven Dörr) and DFKI (Frederic Kerber) tackle the big questions about the future of AI in supermarkets.
Should teams draft more offensive linemen?
I previously blogged about the impact drafting offensive linemen has on winning and making the playoffs. Since I wrote that, we have new data points to add to the analysis and an exciting finale to this NFL season. In this blog post, I’ll explore a few more arguments both in
Creating codebooks with SAS macros
SAS Press author Kim Chantala shows you how to to spend less time preparing data so you can lavish time on analysis.
Gaussian random walks and Levy flights
Imagine an animal that is searching for food in a vast environment where food is scarce. If no prey is nearby, the animal's senses (such as smell and sight) are useless. In that case, a reasonable search strategy is a random walk. The animal can choose a random direction, walk/swim/fly
Making a 'BIG' Difference: Meet the SAS Black Initiatives Group!
The BIG Group can’t wait to gather in-person again, but for now, they’re staying safe and meeting virtually. We love this group portrait above of the Black Initiatives Group leadership council titled “An Evening of Excellence,” created by BIG co-chair Christopher Williams. __________________________________________________________________________________________ Our SAS culture blends our different backgrounds,
The Dog That Sniffs Out Hate AI#35
In conversation with Sophie Achermann, co-founder of the platform www.StophateSpeech.ch.
SAS graphs for R programmers - overlay lines
In the past, Sanjay showed how to create several basic graphs using both R and SAS ODS Graphics code. I'm going to take a bit of a "deeper dive" and focus a series of blog posts on highly customized graphs. Hopefully the code for these customizations will provide you with
3 forces driving modern asset liability management strategies
Economic, tech and regulatory trends are shifting asset liability management strategies.
Our Storytellers: Sheri Thathal
We’re proud of our unique company culture that spans across offices, divisions and geographies. It’s one of the reasons why SAS is named among the top workplaces in the world by Fortune’s Great Place to Work! If you’re curious about what it’s like to work at SAS, you’re in the right place. Our people are always asking, “What if?’ and pushing the bounds of
Financial crime in 2020: How did my predictions play out?
Stu Bradley evaluates his 2020 predictions for fraud, AML compliance and security.
Yes, Whey!
Little Miss Muffet Sat on a tuffet, Eating her curds and whey; Along came a spider, Who sat down beside her And frightened Miss Muffet away! I grew up chanting this popular nursery rhyme and now recite it to my children, but it wasn’t until I started making Greek
Game on! Here's a fun way to learn SAS
SAS' Leonid Batkhan encourages you to join him at SASensei, an independent, third-party online SAS learning resource (game).
The inverse gamma distribution in SAS
The inverse gamma distribution is a continuous probability distribution that is used in Bayesian analysis and in some statistical models. The inverse gamma distribution is closely related to the gamma distribution. For any probability distribution, it is essential to know how to compute four functions: the PDF function, which returns
The evolving role of AI in drug safety
Safety, efficacy, speed and costs must all be prioritized and balanced in the delivery of life-changing therapies to patients. A drug that's quickly and cost-efficiently delivered to market, but isn’t effective and safe is unacceptable. An effective, safe drug that doesn’t get to patients in time to save lives has
How to compute the incomplete gamma function in SAS
Years ago, I wrote about how to compute the incomplete beta function in SAS. Recently, a SAS programmer asked about a similar function, called the incomplete gamma function. The incomplete gamma function is a "special function" that arises in applied math, physics, and statistics. You should not confuse the gamma
The road to modern econometrics
A note from Udo Sglavo: When people ask me what makes SAS unique in the area of analytics, I will mention the breadth of our analytic portfolio at some stage. In this blog series, we looked at several essential components of our analytical ecosystem already. It is about time to
5 tips for data scientists on improving your visibility
It’s been a full eight years since HBR declared that data scientists hold the sexiest job of the 21st century. Yet, here we are in 2021, and the work of data scientists is still found outside the spotlight in many settings. Younger data scientists, in particular, can find it hard
5 ways insurance will change by 2025
I’ve never seen so much evidence from within the insurance industry that we’re on the cusp of a fundamental change. Given the disruption we’ve witnessed over the last 12 months, and the level of uncertainty that persists, it’s very difficult to generalise and predict how the industry will change as
AI as a sales hit with morals AI#34
We talked with Dalith Steiger-Gablinger, co-founder of AI Hub SwissCognitiv.
Mobile phone market share - stacked bar charts
I recently had a discussion with a friend, and we were wondering about Apple's market share. This led me to look into the actual data ... finding the online charts lacking, and then designing my own charts. Follow along if you're curious about the process of improving the charts, or
Little Life Hacks series: A River Runs Through Us
I’ve dabbled in the energy meridian system for fifteen years. I’ve personally experienced acupuncture for much of those with great success. While I’ve learned about prana or qi/chi (energy) in yoga and have created class sequences to open those channels, it wasn’t until the last few years that I started
Beware of data shared via social media - get the facts
Editor's note: This blog post is part of a series of posts, originally published here by our partner News Literacy Project, exploring the role of data in understanding our world. Like infographics, social media and other forms of user-generated content pose unique challenges regarding data. Many news outlets and journalists have checks and balances
The stationary block bootstrap in SAS
This is the third and last introductory article about how to bootstrap time series in SAS. In the first article, I presented the simple block bootstrap and discussed why bootstrapping a time series is more complicated than for regression models that assume independent errors. Briefly, when you perform residual resampling
SAS and PHUSE: How it started, and how it’s going
"I was very impressed by how epidemiologists, analytical experts, architects, programmers and others were working together."
Visualizing our Netflix Trip through "The Office"
Over 57 billion minutes of The Office was streamed in 2020. My family bears some responsibility. Here's our activity visualized -- using SAS.