Kernel Function
In data science and machine learning, a kernel function is a mathematical function that transforms data into a higher-dimensional space, allowing for more complex analysis and classification. Kernel functions are commonly used in support vector machines (SVMs) and other algorithms that involve mapping data into a higher-dimensional space. The kernel function measures the similarity between two data points in the transformed space, allowing for efficient computation of the decision boundary between different classes of data. Common types of kernel functions include linear, polynomial, radial basis function (RBF), and sigmoid. The choice of kernel function can have a significant impact on the performance of a machine learning algorithm, and selecting the appropriate kernel function for a given dataset is an important part of the model selection process.
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