
In this section, you will learn what a logistic regression model is, why it is an important tool for decision scientists, and how it is being used in different industries, to make smarter decisions and create better outcomes. At the end of the section, we will do a quick summary of what we have learned.
In this section, we will provide modeling project overview. This session will cover:
Web link for data and document download for the project:
http://www.sigkdd.org/kddcup/index.php?section=1998&method=info
In this section, we will review modeling data. We will start with reviewing modeling samples and overall data summary. Then we will discuss key variables in the data. We will take a quick look at data, followed by an overview on predictors and data dictionary. We will end the section with key takeaways.
In this section, we will first walk you through our 6-step modeling process. Then we will dive into each of the modeling steps. In each step, we will do extensive demo to show you how to use or develop SAS program. We will run the SAS program and provide explanation on SAS outputs. For you to get the best out of this section, we recommend that you open your SAS program and try to execute the same program along with us.
Apply data quality checks using proc freq and proc means to assess dependent variable distribution. Transform date variables into durations and flag 99 percent missing and exact-same-value variables.
Transform date observables into duration variables in sas using arrays and do loops, then create a 50/50 training–validation split with a random sample and verify distributions with proc freq.
Demonstrates a SAS macro workflow for logistic regression: define input data and dependent variable, bin predictors into 10 groups, and build summary tables to inspect relationships.
In this section, you will learn how to use bivariate plots for variable transformations, how to impute missing values, how to handle extreme values, and how to perform non-linear transformations. At the end of the class, you will be able to perform sophisticated variable transformations.
Apply a bearable transformation macro to predictors, set imputation, raw, and KEF values per predictor, and use median imputation with a cap at 30.
Develop a SAS-based stepwise modeling workflow to generate a model scoring equation from coefficient estimates, including data step, transpose, cross-product view, for training and validation.
This is a hands-on training class for those of you who want to learn or improve predictive modeling skills. We will focus on developing and validating a logistic regression model in this class.
We will walk you through our 6-step modeling process step-by-step. Together, we will solve a real-world modeling project with real-world data. We will provide extensive demo on SAS code development, running SAS codes, and explaining SAS outputs. We will also provide you all the SAS codes used in this course.
At the end of the class, you should be able to develop a logistic regression model independently.