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## Regression Algorithms in Artificial Intelligence – ZRM Solutions

Regression algorithms are widely used in AI for predicting continuous numerical values based on input data. Here are some popular regression algorithms:

1. Linear Regression: Linear regression is a basic and widely used regression algorithm. It assumes a linear relationship between the input variables and the output. It aims to find the best-fit line that minimizes the sum of squared differences between the predicted and actual values.
2. Polynomial Regression: Polynomial regression extends linear regression by allowing for higher-order polynomial relationships between the input variables and the output. It can capture more complex patterns in the data.
3. Decision Tree Regression: Decision tree regression builds a tree-like model where each internal node represents a test on an input feature, and each leaf node represents a predicted output value. It splits the data based on the input features and predicts the average value of the target variable within each leaf.
4. Random Forest Regression: Random forest regression is an ensemble method that combines multiple decision trees. Each tree is built on a random subset of the data and features, and the final prediction is the average prediction of all the trees.
5. Support Vector Regression (SVR): SVR is a variant of Support Vector Machines (SVM) for regression tasks. It finds a hyperplane that maximizes the margin while allowing for tolerance in predicting within a certain error range. It can handle non-linear relationships using kernel functions.
6. Neural Network Regression: Neural networks can also be used for regression tasks. They consist of interconnected layers of artificial neurons that learn complex patterns in the data. The output layer typically consists of a single neuron for regression, and the network is trained using techniques like gradient descent.
7. Gradient Boosting Regression: Gradient boosting algorithms, such as Gradient Boosting Regression (GBR) or XGBoost, build an ensemble of weak prediction models (usually decision trees) in a sequential manner. Each subsequent model is trained to correct the errors made by the previous models, gradually improving the overall prediction.

These are just a few examples of regression algorithms used in AI. The choice of algorithm depends on the specific problem, the nature of the data, and other factors such as interpretability, computational efficiency, and the need for handling non-linear relationships.

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