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Subsection 7.1.3: Parameters Section Up Section 7.1: Optimization Input File Subsubsection 7.1.4.1: The data-fit model

### 7.1.4 Objective Section

This section defines the functional model that is used to evaluate the objective function (i.e. the function above). The particular functional model is defined via the type attribute, and the following table lists the available options.
 Value Description data-fit Fits data, usually specified as a function of time, to a model output parameter target Optimizes until one or more output model parameters achieve a target value. element-data The target data is defined as a tabulated list of element values. node-data The target data is defined as a tabulated list of nodal values.
These options will be described separetely in the following sections.
Subsection 7.1.3: Parameters Section Up Section 7.1: Optimization Input File Subsubsection 7.1.4.1: The data-fit model