Summarizing the concepts we learned in Part IV

In Part IV, that is, Chapter 12, Model Accuracy Degradation and Feedback Loops, we defined the concept of model performance deterioration through an ad-click conversion dataset. We walked through the idea of a feedback loop and why it becomes important in modeling dynamic ad-click behavior. Then, we demonstrated how model performance improves—through a feedback loop—in predicting whether an ad click results in app downloads.