Loading

Python with R Studio

Random Forest Regression in Python. The Complete Python with R Studio Developer Course 2022 [Videos].

Every decision tree has high variance, but when we combine all of them together in parallel then the resultant variance is low as each decision tree gets perfectly trained on that particular sample data and hence the output doesnt depend on one decision tree but multiple decision trees.

In the case of a classification problem, the final output is taken by using the majority voting classifier. In the case of a regression problem, the final output is the mean of all the outputs. This part is Aggregation. 
 

A Random Forest is an ensemble technique capable of performing both regression and classification tasks with the use of multiple decision trees and a technique called Bootstrap and Aggregation, commonly known as bagging. The basic idea behind this is to combine multiple decision trees in determining the final output rather than relying on individual decision trees. 
Random Forest has multiple decision trees as base learning models. We randomly perform row sampling and feature sampling from the dataset forming sample datasets for every model. This part is called Bootstrap.
We need to approach the Random Forest regression technique like any other machine learning technique 

  • Design a specific question or data and get the source to determine the required data.
     
  • Make sure the data is in an accessible format else convert it to the required format.
     
  • Specify all noticeable anomalies and missing data points that may be required to achieve the required data.
     
  • Create a machine learning model
     
  • Set the baseline model that you want to achieve
     
  • Train the data machine learning model.
     
  • Provide an insight into the model with test data
     
  • Now compare the performance metrics of both the test data and the predicted data from the model.
     
  • If it doesnt satisfy your expectations, you can try improving your model accordingly or dating your data or use another data modeling technique.
     
  • At this stage you interpret the data you have gained and report accordingly. 
     

You will be using a similar sample technique in the below example. 
Example 
Below is a step by step sample implementation of Random Forest Regression.
Step 1 : Import the required libraries. 

# Importing the libraries
import numpy as np
import matplotlib.pyplot as plt
import pandas as pd

See All

Comments (144 Comments)

Submit Your Comment

See All Posts

Related Posts

Python with R Studio / Youtube

How to install R Studio for python?

RStudio Connect helps teams of all sizes operationalize their data science work, and provides a single point of access to data products for decision makers. In this release, we have emphasized features that will help address maturing DevOps requirements within organizations seeking to deploy and scale data science. This release of RStudio Connect builds on the existing Server API, making experimental endpoints officially supported and introducing a brand new slate of API improvements based on feedback we’ve received from the community.
3-jan-2022 /9 /144

Python with R Studio / Youtube

How do I navigate in RStudio?

RStudio Connect helps teams of all sizes operationalize their data science work, and provides a single point of access to data products for decision makers. In this release, we have emphasized features that will help address maturing DevOps requirements within organizations seeking to deploy and scale data science. This release of RStudio Connect builds on the existing Server API, making experimental endpoints officially supported and introducing a brand new slate of API improvements based on feedback we’ve received from the community.
3-jan-2022 /9 /144

Python with R Studio / Blog

What is difference between DataFrame and DataSet?

A data frame is a table or a two-dimensional array-like structure in which each column contains values of one variable and each row contains one set of values from each column. ... The data stored in a data frame can be of numeric, factor or character type. Each column should contain same number of data items.
3-jan-2022 /9 /144