Blog Archives

caret Cheatsheet

September 12, 2017
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caret Cheatsheet

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Nested Resampling with rsample

September 4, 2017
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Nested Resampling with rsample

A typical scheme for splitting the data when developing a predictive model is to create an initial split of the data into a training and test set. If resampling is used, it is executed on the training set where a series of binary splits is created. In rsample, we use the term analysis set for the data that...

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Do Resampling Estimates Have Low Correlation to the Truth? The Answer May Shock You.

April 23, 2017
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Do Resampling Estimates Have Low Correlation to the Truth? The Answer May Shock You.

One criticism that is often leveled against using resampling methods (such as cross-validation) to measure model performance is that there is no correlation between the CV results and the true error rate. Let's look at this with some simulated data. W...

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Working at RStudio

November 28, 2016
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Working at RStudio

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2016 UK Tour

September 26, 2016
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2016 UK Tour

I'll be in the UK next week doing three talks in three days: First, I'll be giving a talk at the London R-Ladies meetup on Monday October 3rd with perhaps the best title yet: Whose Scat Is That? An 'Easil...

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DataCamp Course

September 26, 2016
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DataCamp Course

Zachary Deane-Mayer, who collaborates on caret, has put together a DataCamp course on Machine Learning in R. Zach and DataCamp did a great job of developing a course that is just right for people who are ...

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Boston R User Group Talk [UPDATE]

March 4, 2016
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Boston R User Group Talk [UPDATE]

I'll be giving a talk on Boston R user Group on Thursday March 10th at 6:00 PM. The talk will be on rule-based regression models. The image above is the training/test set split for the data that I'll be us...

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Boston R User Group Talk [UPDATE]

March 4, 2016
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Boston R User Group Talk [UPDATE]

I'll be giving a talk on Boston R user Group on Thursday March 10th at 6:00...

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Central Iowa R User Group Talk [Updated]

January 18, 2016
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Central Iowa R User Group Talk [Updated]

I'll be giving a talk ("Applied Predictive Modeling") to the Central Iowa R User Group on Thursday...

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Central Iowa R User Group Talk [Updated]

January 18, 2016
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Central Iowa R User Group Talk [Updated]

I'll be giving a talk ("Applied Predictive Modeling") to the Central Iowa R User Group on Thursday night at 6:00 PM to 8:00 PM (CST). It looks like it will be broadcast live on YouTube. The link is http://...

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