Chapter 22 Model Introduction
Author: Ron Reviewer:
22.1 Hypothesis generation vs. hypothesis confirmation
To confirm a hypothesis you must use data independent of the data that you used to generate the hypothesis. To do confirmatory analysis, one approach is to split data into three pieces before begin the analysis: 1. 60% goes into training set. 2. 20 goes into query set. You can use this data to compare models or visualisations by hand. 3. 20% is kept as test set. Use this data only ONCE to test final model.