What is a Random Forest?Answer areaA type of neural networkAn ensemble learning method that uses multiple decision treesA clustering algorithmA linear model
Question
What is a Random Forest?
- A type of neural network
- An ensemble learning method that uses multiple decision trees
- A clustering algorithm
- A linear model
Solution
A Random Forest is an ensemble learning method that uses multiple decision trees.
Here's a step-by-step explanation:
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Ensemble Learning Method: This means that the algorithm uses multiple learning algorithms to obtain better predictive performance. In the case of a Random Forest, the learning algorithms are decision trees.
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Multiple Decision Trees: A decision tree is a flowchart-like structure where each internal node represents a feature (or attribute), each branch represents a decision rule, and each leaf node represents an outcome. The Random Forest algorithm creates multiple decision trees and merges them together to get a more accurate and stable prediction.
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Random: The term 'Random' in Random Forest comes from the fact that at each candidate split in the learning process, the algorithm selects a random subset of the features. This process of random selection of features brings an element of randomness in the creation of decision trees, hence the name 'Random Forest'.
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Forest: The term 'Forest' is used because the algorithm creates a 'forest' of decision trees, not just one tree.
So, in summary, a Random Forest is a machine learning algorithm that creates a 'forest' of decision trees, each created from a random subset of the features, and combines them to make a more accurate and stable prediction.
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