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hidden Markov model
A statistical Markov model in which the system being modelled is assumed to be a Markov process with unobserved (hidden) states.
plum pudding model
(historical, physics) An obsolete scientific model of the atom, devised shortly after the discovery of the electron but before the discovery of the atomic nucleus, and according to which the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges. It was disproved in 1909.
ball-and-stick model
(chemistry) A molecular model of a chemical substance, displaying the three-dimensional position of the atoms (as spheres) and the bonds between them (as connecting rods).
Dreyfus model of skill acquisition
A model of how learners can acquire skills through formal instruction and practicing, used in the fields of education and operations research.
