Naturallanguageprocessing, NLP, Machine Learning, Deep Learning, Artificial Intelligence.
at time t is recorded in the ψ matrix: ψ[i][t] = argmax(delta[j][t-1] * A[j][i]) for all j Here, psi[i][t] is the state that contributed most to the maximum path probability for state i at time t, and argmax() is the function that returns the argument that maximizes the expression inside the