The Do Loop

Robust principal component analysis in SAS

Recently, I was asked whether SAS can perform a principal component analysis (PCA) that is robust to the presence of outliers in the data. A PCA requires a data matrix, an estimate for the center of the data, and an estimate for the variance/covariance of the variables. Classically, these estimates are the mean and the… Continue reading Robust principal component analysis in SAS

Graphically Speaking

Graphs with long category values

A few days ago, I posted an article on displaying first N bars from a data set. This is useful when the data is sorted by descending response, and only the first few values are significant. There were a few interesting comments, including one that was regarding the treatment of long category values. That comment… Continue reading Graphs with long category values

Graphically Speaking

Tips and Tricks: Managing long category values

Long category values occur frequently in real world use cases. This can happen with graphs for analysis of clinical research data, and also for graphs showing survey data where the question asked may be long (even a paragraph). Managing such long categories on the x or y axis is always a challenge. With the SAS… Continue reading Tips and Tricks: Managing long category values

SAS Users

SAS Viya sharing credentials for database access

SAS Viya deployments use credentials for accessing databases and other third-party products that require authentication. In this blog post, I will look at how this sharing of credentials is implemented in SAS Environment Manager. In SAS Viya, domains are used to store the: Credentials required to access external data sources. Identities that are allowed to… Continue reading SAS Viya sharing credentials for database access

SAS Voices

PSD2: Demystifying the beast

The revised EU Payment Services Directive (PSD2) has been a focal point for the financial services industry over the last couple of years and its adoption is set to revolutionise the payment ecosystem in Europe. New entrants, innovative technologies and increased regulation are already posing major challenges to traditional banks as they need to do… Continue reading PSD2: Demystifying the beast

Other

Hyperparameters, digital analytics, and key performance indicators

How can you tell if your marketing is working? How can you determine the cost and return of your campaigns? How can you decide what to do next? An effective way to answer these questions is to monitor a set of key performance indicators, or KPIs. KPIs are the basic statistics that give you a… Continue reading Hyperparameters, digital analytics, and key performance indicators