我认为机器学习中的模型应该用以下第三条解释。

a system of postulates, data, and inferences presented as a mathematical description of an entity or state of affairs

假设、数据和推论的系统，作为对一个实体或事件状态的数学描述。

1: a usually miniature representation of somethinga plastic model of the human heartalso : a pattern of something to be made 2a: a type or design of product (such as a car)offers eight new models for next year, including a completely restyled convertible b: a type or design of clothinggirls, self-conscious in their Paris models— Paul Bowles 3: a system of postulates, data, and inferences presented as a mathematical description of an entity or state of affairsalso : a computer simulation (see SIMULATION sense 3a) based on such a systemclimate models 4: ARCHETYPE 5: an example for imitation or emulationhis written addresses are models of clearness, logical order, and style— A. B. Noble 6: one who is employed to display clothes or other merchandisehas appeared as a model in ads for swimsuits 7: a person or thing that serves as a pattern for an artistespecially : one who poses for an artistHis wife served as the model for many of his paintings. 8: VERSION sense 2an experimental model of a bionic arm 9: a description or analogy used to help visualize something (such as an atom) that cannot be directly observed 10: structural designa home on the model of an old farmhouse 11: an organism whose appearance a mimic imitates 12: ANIMAL MODEL 13dialectal British : COPY, IMAGE 14obsolete : a set of plans for a building