= Basis function
{wiki=Basis_function}
A basis function is a fundamental component in various fields such as mathematics, statistics, and machine learning. It serves as a building block for constructing more complex functions or representations. Here are some key points about basis functions: 1. **Mathematical Definition**: In the context of functional analysis, a set of functions is considered a basis if any function in a certain function space can be expressed as a linear combination of those basis functions.
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