Continued fractions show up in surprising places. They are used in the numerical approximations of certain functions, including the evaluation of the normal cumulative distribution function (normal CDF) for large values of x (El-bolkiny, 1995, p. 75-77) and in approximating the Lambert W function, which has applications in the modeling
Many of the most beautiful areas in the US are owned by the government, to preserve them and allow access for everyone to enjoy them. And most US schools are traditionally closed during the summer, which provides families a great opportunity to go visit state and federal lands (parks, forests,
Are you curious? Do you have a passion for science, technology, engineering and math (STEM)? Do you enjoy robotics or statistics? Do you like to solve hard problems? If you answered yes to any of the above, you might have what it takes to be a data scientist. Recently, I
Learn how to create measures with different levels of aggregation through selective filtering in SAS Visual Analytics. This post illustrates selective filtering through a "Customer Penetration" example.
Jawwad Baig knew when the time came to transition from college life to a professional career, he wanted to work for an extraordinary company where he could bring all of his talents to the table. But what company would be the right fit for him? As any thrifty college student
Let’s face it: teaching students to write well is a remarkably complex task. Whether they’re explicating an Emily Dickinson poem or reporting lab results for a science class, student writers must express themselves clearly and forcefully—and that usually involves revision. As James Baldwin knew, rewriting is both painful and
Hybrid computers that marry CPUs and devices like GPUs and FPGAs are the fastest computers, but they are hard to program. This post explains how deep learning (DL) greatly simplifies programming hybrid computers.
Are you one of the millions of writers using Microsoft Word, for work or life? Whether you are writing a narrative essay for your 5th-grade teacher due in two days, summarizing your methods and results for the lab report due by the end of the semester, drafting a new blog
I recently read an article by a parent coach I admire about phrases she has used frequently over the years with her daughter. Here’s a snippet: "My daughter mouthed the words as I began to say them, "Don’t decide how things are going to be later." She has heard this phrase
In the SAS/IML language, you can only concatenate vectors that have conforming dimensions. For example, to horizontally concatenate two vectors X and Y, the symbols X and Y must have the same number of rows. If not, the statement Z = X || Y will produce an error: ERROR: Matrices
If you're good at games like Wheel of Fortune, Scrabble, or Words with Friends, you've probably figured out that certain letters appear more often than others. But do you have a cool way to figure out which letters appear most & least frequently? How about using a computer to plot
Looking for ways to learn and review Spanish vocabulary for the new school year? Check out our new Spanish Vocabulary Series. Created for beginning-level students, these resources offer visuals and audio support as students enhance their Spanish vocabulary. And don't forget about our popular Spanish Video Library and Quick Tutorials!
Note: The following concludes an eight-part serialization of selected content from Steve Morlidge's The Little (Illustrated) Book of Operational Forecasting. Good forecasts don’t always ‘look right’ Many forecasters believe that they can tell how good a forecast is by ‘eyeballing’ it. Good forecasts just ‘look right’ or so they would
How can SAS Grid Manager and SAS Viya work together to process massive volumes of data? Get answers to common questions about how the two interact in this blog post.
A SAS programmer recently asked me how to compute a kernel regression in SAS. He had read my blog posts "What is loess regression" and "Loess regression in SAS/IML" and was trying to implement a kernel regression in SAS/IML as part of a larger analysis. This article explains how to
Note: Following is an eight-part serialization of selected content from Steve Morlidge's The Little (Illustrated) Book of Operational Forecasting. The measurement challenge So here is the forecasters dilemma: There will always have forecast error. The challenge is to work out the cause of the error and to take the appropriate
Using relative file paths in your SAS programs? Use the new DLGCDIR function to manage your SAS working directory -- even in SAS Enterprise Guide or SAS Studio -- to ensure your programs are working the way they ought to.
We'll take a short break from the Steve Morlidge book serialization, to announce that SAS Research & Development has again provided $10,000 in funding for the SAS/IIF grant program. Both academics and industry practitioners are encouraged to apply and conduct original research for improving the practice of forecasting. SAS/IIF Grants
The Work/Life Center is here to provide support through life transitions. With college semesters in full swing, we're aware that some of you may be facing the transition of "empty nesting". "Empy nesting" occurs after kids leave the home. This transition can occur any time of the year and for
This blog post highlights more SAS Global Forum papers chosen by SAS Press authors.
The start of a new school year is a big deal. It’s a time full of excitement, anticipation, and, of course, preparation. With over 300 science resources available at no cost, Curriculum Pathways can save you time and money with our ready to use, standards-based, online lessons. From genetics to
Note: Following is an eight-part serialization of selected content from Steve Morlidge's The Little (Illustrated) Book of Operational Forecasting. The forecasting challenge It is not possible to forecast any future outcomes precisely. Only the signal is potentially forecastable – noise is unforecastable in principle. And all forecasts assume that the
My buddy Chris recently blogged about accessing the IoT data from an M&M jar being monitored in one of the breakrooms at SAS. Now I'm going to take things a step further and analyze that data with some graphs. Grab a snack, and follow along, as we dig into this
As a third-year intern here at SAS and rising sophomore in college, I’ve been fortunate enough to have completed a few projects in various corners of the tech space. Having gathered my third data point this summer, and in the spirit of SAS #analytics, I’ve started making some data-driven inferences
A frequent topic on SAS discussion forums is how to check the assumptions of an ordinary least squares linear regression model. Some posts indicate misconceptions about the assumptions of linear regression. In particular, I see incorrect statements such as the following: Help! A histogram of my variables shows that they
Note: Following is an eight-part serialization of selected content from Steve Morlidge's The Little (Illustrated) Book of Operational Forecasting. Data Series are different – and it matters to forecasters The nature of demand that is to be forecast, as represented by patterns in the historic data series, that is to
How to count words in SAS with the COUNT functions, and concatenate strings by using the CAT functions. Use these tips to modernize your SAS code!
Jim Harris warns against allowing your data lake to become a poorly managed and ungoverned data dumping ground.
Note: Following is an eight-part serialization of selected content from Steve Morlidge's The Little (Illustrated) Book of Operational Forecasting. Forecasting is not compulsory Operational forecasting is important but it is not mandatory. operational forecasts are used to make sure that a business can respond effectively to customer demand for its
Marginal model plots display the marginal relationship between the response and each predictor. You can use a SAS autocall macro, %Marginal, to display marginal model plots.
