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Applied Supervised Learning with R

You're reading from   Applied Supervised Learning with R Use machine learning libraries of R to build models that solve business problems and predict future trends

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Product type Paperback
Published in May 2019
Publisher
ISBN-13 9781838556334
Length 502 pages
Edition 1st Edition
Languages
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Authors (2):
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Jojo Moolayil Jojo Moolayil
Author Profile Icon Jojo Moolayil
Jojo Moolayil
Karthik Ramasubramanian Karthik Ramasubramanian
Author Profile Icon Karthik Ramasubramanian
Karthik Ramasubramanian
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Table of Contents (12) Chapters Close

Applied Supervised Learning with R
Preface
1. R for Advanced Analytics FREE CHAPTER 2. Exploratory Analysis of Data 3. Introduction to Supervised Learning 4. Regression 5. Classification 6. Feature Selection and Dimensionality Reduction 7. Model Improvements 8. Model Deployment 9. Capstone Project - Based on Research Papers Appendix

Predictions


We could also get the predictions on the test dataset using the getBMRPredictions function. The two tables in this section show the actual and the predicted labels of a few images represented by the ID column. Observe that the predictions are not perfect, just as we would expect from the relatively low overall accuracy.

Predictions using randomForestSRC:

head(getBMRPredictions(bmr, as.df = TRUE))

Figure 9.13: The actual labels.

Figure 9.14: The predicted labels.

Learners and measures

The getBMRLearners function gives details about the learners used in the benchmark. Information such as hyperparameter and predict-type could be obtained using this function. Similarly, the getBMRMeasures function provides details such as best about the performance measures. The following table shows the details about the measures we used in our benchmark experiment:

getBMRLearners(bmr)

The output is as follows:

## $multilabel.randomForestSRC
## Learner multilabel.randomForestSRC from package randomForestSRC...
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