parametrisers

A parametriser is a term used in various fields, often referring to an entity or concept that defines or controls parameters. In the context of computer programming and software development, a parametriser can be a function, a method, or a class that accepts arguments or inputs. These inputs, known as parameters, influence the behavior or output of the parametriser. For example, a sorting function might be parametrised by a comparison operator, allowing it to sort data in different orders. Similarly, a graphical rendering function could be parametrised by colour, texture, or lighting settings to control the appearance of an object.

In mathematics and statistics, a parametriser might refer to a function that maps a set of parameters to a space of objects or functions. This is common in areas like statistical modelling, where models are often defined by a set of parameters that are estimated from data. The parametriser then allows for the generation of specific instances of the model based on these parameter values. For instance, a probability distribution is often parametrised by its mean and variance.

The concept of a parametriser can also extend to hardware and engineering. In some systems, a parametriser might be a physical component or a software setting that allows for the adjustment of operational characteristics. This enables systems to be adapted to different conditions or requirements without needing to redesign the core functionality. The general idea is that a parametriser introduces variability and customisation by allowing external input to shape its output or behavior.