Opinions have the functions of inspiring and motivating mental reasoning, directing reasoning operations, deriving thoughts, and constructing hypotheses and so on.
观念对思维具有激发动机、意向，导引思维操作，作出推断和思想构建等作用。
Its concept, basic hypotheses and constructing methods are described.
文中叙述了它的概念、基本假设和建模方法。
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