Building random forest models for regression
This recipe looks at random forests—one of the most successful machine learning techniques.
Getting ready
If you have not already installed the randomForest
and caret
packages, install them now. Download the data files for this chapter from the book's website and place the BostonHousing.csv
file is in your R working directory. We will build a random forest model to predict MEDV
based on the other variables.
How to do it...
To build random forest models for regression, follow the steps below:
- Load the
randomForest
andcaret
packages:> library(randomForest) > library(caret)
- Read the data:
> bn <- read.csv("BostonHousing.csv")
- Partition the data:
> set.seed(1000) > t.idx <- createDataPartition(bh$MEDV, p=0.7, list=FALSE) ...
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