This guide introduces MD5 and hash functions in general, lists common uses for hash functions, gives advise on how to best use MD5 in SAS, and covers common issues.

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This guide introduces MD5 and hash functions in general, lists common uses for hash functions, gives advise on how to best use MD5 in SAS, and covers common issues.

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Here is code to calculate RMSE and MAE in R and SAS. RMSE (root mean squared error), also called RMSD (root mean squared deviation), and MAE (mean absolute error) are both used to evaluate models. MAE gives equal weight to all errors, while RMSE gives...

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A SAS code to generate information about each month such as the number of days in the month, week days, hours, work hours, etc. using intck and intnx function. It's also a good example of using a DATA step to generate a data set without an input data ...

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Here is a macro to generate binary features (also called dummy coding) from a nominal variable (also called a categorical variable, such as eye color). The automation saves time and avoids mistakes when there are many possible values to a category or ...

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Today Charlie Huang posted a SAS HTML table sorting demo, but without automation. Here is a fully automated implementation in SAS. The developer does not need to manually edit the HTML, and the user simply clicks any column and it sorts instantly clien...

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This demonstrates an easy way to calculate the Net Promoter Score, a measure of customer loyalty, in SAS’s PROC TABULATE. I prefer to use PROC TABULATE because of its power for various summaries. In the example we repeated the Net … Continu...

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A 100% stacked bar chart is useful for comparing the relative frequencies of an m x n table where frequencies in m are very different. While this is easy to do in Excel, SAS requires an extra step, which you … Continue reading →

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In Natural Language Processing it can be helpful within a larger body of text to standardize written numbers to Arabic numerals. For example, we will change “I am forty-six years old” to “I am 46 years old,” so the age … C...

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