A bit more on testing
If you liked Nina Zumel’s article on the limitations of Random Test/Train splits you might want to check out her recent article on predictive analytics product evaluation hosted by our friends at Fliptop.
Unprincipled Component Analysis
As a data scientist I have seen variations of principal component analysis and factor analysis so often blindly misapplied and abused that I have come to think of the technique as unprincipled component analysis. PCA is a good technique often used to reduce sensitivity to overfitting. But this stated design […]