FES

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1. In Chapter 11.2.1, there is a mention of results from an initial model: >The initial analysis of the training set showed that there were 5 predictors with an area...

MoonCastle85

the subset recipe was not being used in the subset training model

rrrventures

Version 2019-06-21, last paragraph of section 2.2: ``` ... red boxes along the diagonal of the corrleation matrix in Figure 2.3. ```

carstentete

In the section [7_04_The_Brute-Force_Approach_to_Identifying_Predictive_Interactions](https://bookdown.org/max/FES/complete-enumeration.html), the code [ames_pairwise.R](https://github.com/topepo/FES/blob/06812c48a21882808403cee338b8312fdbd35a46/07_Detecting_Interaction_Effects/7_04_The_Brute-Force_Approach_to_Identifying_Predictive_Interactions/ames_pairwise.R) the particular chunk of codes as shown below are throwing some errors, ```r for (i in 1:nrow(interactions)) { tmp_vars

obgeneralao

Leave-one-out cross validation is very valuable

2

Near the end of Section 3.4.1 the statement is made that leave-one-out cross validation is deprecated. Because this version is the most compute-intensive of all (training is done most often,...

TimothyMasters

Averaging fold criteria not usually advisable

2

In section 3.4.1, the suggestion is made that in order to compute a performance criterion using V-fold cross validation, the criterion should be computed separately for each fold, and then...

TimothyMasters

It appears that averaging RMSE (rather than MSE) over V-folds introduces a small bias to the test set error estimate. Averaging RMSE over V-folds appears to underestimate the "true" test...

crossxwill

Section 3.4.1 variance reduction not Sqrt(R)

1

Section 3.4.1 discusses R repeats of V-fold cross validation and incorrectly states that the variance reduction will be by a factor of Sqrt(R). This would be true only if the...

TimothyMasters

Thanks for giving us feedback on the book. Please follow these guidelines: ## Comments or questions on the content Hello I have been trying to recreate the plots that are...

I-Mohiuddin

Codes for Section 6.2 are missing

1

Hi, The codes used to generate Figures 6.4, 6.5, 6.6 are not available at Github. Could you please make those codes available? Thanks.

ngyongkad