How to use RandomForest Classifier and Regressor in Python

Random Forest is an ensemble machine learning algorithm that creates multiple decision trees and combines their predictions to make more accurate predictions. It is used for both classification and regression problems. In this article, we will go over the basics of how to use Random Forest Classifier and Regressor in Python.

First, we need to import the necessary libraries such as Numpy and Pandas, which will help us handle our data. Next, we will import the RandomForestClassifier or RandomForestRegressor class from the sklearn.ensemble library, which will be used to create our model.

Once we have our libraries and classes imported, we can start creating our model. To do this, we will first need to load our data into a Pandas dataframe. We can do this by using the read_csv function, which will allow us to read in data from a CSV file.

Once our data is loaded, we will need to split it into training and testing sets. This is important because it allows us to test the accuracy of our model on unseen data. We can do this using the train_test_split function, which will randomly split our data into training and testing sets.

Now that our data is ready, we can create our model. We do this by instantiating the RandomForestClassifier or RandomForestRegressor class and then fitting it to our training data using the fit method. Once the model is trained, we can use it to make predictions on our testing data using the predict method.

To check the accuracy of our model, we can use different metrics such as accuracy score, precision, recall, and f1-score for classification and R2 score, mean squared error (MSE) for regression.

Lastly, we need to optimise our model. One way to do this is by tuning the model’s parameters.

 

In this Machine Learning Recipe, you will learn: How to use RandomForest Classifier and Regressor in Python.

Essential Gigs