parameterValue

Parametervalue is the specific data assigned to a parameter within a model, function, or configuration. A parameter is a symbolic quantity that defines how a system behaves or what a result looks like; the parametervalue is the actual value used for that parameter at a given time. In mathematics, a parameter value is the concrete value substituted into a family of functions or equations, enabling a particular instance or prediction.

In programming, a parameter is a variable in a function or method signature, and when a function is invoked, the provided arguments become the parameter values inside the function. The parametervalue thus represents the runtime data held by the parameter during execution. The concept distinguishes between values that are fixed in code and those supplied externally, such as user input or configuration data.

Common types of parametervalues include numeric, string, boolean, enumerations, dates, and composite structures (arrays or objects). They may carry units (for example, meters per second) and may require validation against constraints such as ranges, allowed sets, or interdependent rules. Defaults provide fallback values when no explicit value is supplied.

Parametervalues are set and managed in various ways: within source code, in configuration files, via environment variables, or through user interfaces. In statistical modeling and machine learning, some parametervalues are learned from data (parameters), while others are set by the user to control the learning process (hyperparameters). Proper handling of parametervalues is essential for reproducibility, correctness, and stability of systems and analyses.