Stochastic Gradient Descent (SGD) is an optimization algorithm commonly used for training machine learning models, particularly neural networks. The main goal of SGD is to minimize a loss function, which measures how well a model predicts the desired output. ### Key Concepts of Stochastic Gradient Descent: 1. **Gradient Descent**: - At a high level, gradient descent is an optimization technique that iteratively adjusts the parameters of a model to minimize the loss function.
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Stochastic gradient descent updates parameters using an unbiased or approximate gradient computed from one observation or a mini-batch rather than the complete data set.