Max Kuhn

Thanks again. We have a "hard check" GHA workflow that forces the check to not have suggests. I'll start a new issue and will add that later. _Originally posted by...

With R 4.5.0, we see extra warnings (shown below). R has more rigorous checking code for contrasts, and the issue is in `get_contrasts()`. That function includes the outcome column in...

The [PCA plot of the barley data](https://aml4td.org/chapters/embeddings.html#fig-pca-rotation) shows a pattern reminiscent of the horseshoe effect. We should mention this. See - [PCA ordination notes](https://ordination.okstate.edu/PCA.htm) - [What is the "horseshoe effect"...

It's loong but a pdf is below. [15 -Characterizing-Classification-Models.pdf](https://github.com/user-attachments/files/20112863/15.-Characterizing-Classification-Models.pdf)

Closes #72 Adds four model Quarto docs with sections and subsections for the topics listed in #72. Also fixes a few links in existing chapters

Here is what I'm thinking about in terms of structure: (* means maybe we can discuss this?) - Chapter: Characterizing Classification Models - Chapter: Linear and Additive Classifiers - Intro...

@kjell-stattenacity reminded me that we can crossover and mutate qualitative values. The roadblock is the implementations I've seen, not the mathematics of the problem.

see tidymodels/parsnip#1224 Adds tests for workflows and censored regression

add using roxygen2's @include to next upkeep list

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tidymodels (and ggplot2) have files named `aaa_{blah}.R` to control the source order. We should remind folks to use better file names by adding `@include` in the relevant files.