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What is the difference between Random Forest and Gradient Boosting algorithms? Explain briefly. |
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Answer» Both Random Forest (RF) and Gradient BOOSTING (GBM) are tree-based supervised machine learning ALGORITHMS. Both use a tree-based MODELING approach and ENSEMBLE methods are used. RF uses DECISION trees, kind of complex form of a tree-based algorithm, which is inclined to overfitting. GBM instead is a boosting-based algorithm approach, which is based on weak classifiers. Accuracy of RF can be manipulated by modifying variance. GBM will have more hyper-parameters to tune for accuracy and can be planned to play for a tradeoff between bias and variance. |
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