Errata.md

Errata, Corrections and Improvements

---

If you find any mistakes in The Kaggle Book, or if you have suggestions for improvements, then please raise an issue in this repository, or email to us.

Chapter 05, Page no 116, Table 5.1 - Fixed description as per table cells

Here is how we define the cells:

• TP (true positives): These are located in the lower-right cell, containing examples that have been correctly predicted as positive ones.
• FP (false positives): These are located in the upper-right cell, containing examples that have been predicted as positive but are actually negative.
• FN (false negatives): These are located in the lower-left cell, containing examples that have been predicted as negative but are actually positive.
• TN (true negatives): These are located in the upper-left cell, containing examples that have been correctly predicted as negative ones.

Chapter 05, Page no 110, Mean squared error (MSE) and R squared

Following is the correct formula for R squared "co-efficient of determination":

Chapter 06, Page no 183, reference to test casees number

change "only 1,495" to "about 24,500"

Chapter 06, Page no 184, feature_19 and feature_54

Instead of feature_19 and feature_54, the correct features, that appear the most different between the training/test split, are cont14, cont4 and cont5.