似然函数

Likelihood function: Likelihood function is a measure of how plausible a set of parameter values is given observed data. It quantifies the likelihood of observing the data under different parameter settings. Mathematically, for an observed data point x, the likelihood function L(θ|x) represents the probability of x occurring given a specific parameter value θ, expressed as L(\theta|x) = P(X=x|\theta). In statistical inference, while probability refers to the chance of data arising from known parameters, likelihood is used to assess how well different parameter values explain the observed dat