topic Re: Category counts in SAS Academy for Data Science

Category counts

WWD — Mon, 18 Oct 2021 16:04:24 GMT

Course: AI and Machine Learning Professional

Module: Natural Language and Computer Vision Professional

Lesson 5

Video: Scoring Categories Part 1

Time Position that produced the question 2:14

For this demonstration, the instructor is using "LowGrade" as the target variable in a series of supervised learning models.

Within the category node, when looking at the user-defined categories, the instructor says that there are three levels of the LowGrade, but there are only two levels shown: 0 and 1. What is the third level of this category?

Thank you,

Bill Donaldson

Re: Category counts

TWoodfield — Tue, 19 Oct 2021 06:06:11 GMT

At around 2 minutes, the narrator says that he will confirm the thirteen categories indicated in parentheses after the "All Categories" top level. He then counts through to 13. For the LowGrade binary category variable, he counts three levels, one for the parent level "LowGrade" and two for the child levels "0" and "1". The parent level has no rules specifically for that level, but is defined by the two sets of rules from the child levels. This shows that the levels in the Categories node are hierarchical. You can reference a child level through the parent level by using the tmac syntax. The tmac syntax would not seem to be useful for rules related to a binary category variable. The tmac example in the User's Guide uses a parent level "Name" with child levels "First" and "Last".

LowGrade is a binary category variable with two levels 0 and 1, and no missing values.

Re: Category counts

WWD — Tue, 19 Oct 2021 13:15:47 GMT

TWoodfield:

Thank you for the clarification.

Bill Donaldson