# Model Parameter

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A Model Parameter is a free variable in a parametric model.

**Context:**- It can range from being a Free Model Parameter to being a Bound Model Parameter (for a model fitting)

**Counter-Example(s):****See:**Mathematical Model, Metamodel, Coefficient.

## References

### 1974

- (Baird, 1974) ⇒ Yonathan Bard. (1974). “Nonlinear Parameter Estimation." Academic Press. ISBN:0120782502
- QUOTE: We refer to the relations which supposedly describe a certain physical situation, as a
*model*. Typically, a model consists of one or more equations. The quantities appearing in the equations we classify into*variables*and*parameters*. The distinction between these is not always clear cut, and it frequently depends on the context in which the variables appear. Usually a model is designed to explain the relationships that exist among quantities which can be measured independently in an experiment; these are the variables of the model. To formulate these relationships, however, one frequently introduces “constants" which stand for inherent properties of nature (or of the materials and equipment used in a given experiment). These are the parameters.

- QUOTE: We refer to the relations which supposedly describe a certain physical situation, as a