A good way to see where this article is headed is to take a look at the screenshot in Figure 1. The demo program loads a 200-item set training data and a 40-item set of test data into memory. Next, ...

Next, the demo trains a logistic regression model using raw Python, rather than by using a machine learning code library such as Microsoft ML.NET or scikit. [Click on image for larger view.] Figure 1: ...

Two-phase or double sampling is a standard technique for drawing efficient stratified samples. We develop maximum likelihood estimation of logistic regression coefficients for a hybrid two-phase, ...