Ongetransformeerde

Ongetransformeerde is a term used in Dutch-language mathematics, data science, and signal processing to refer to data or signals that have not undergone a specified transformation. It is the counterpart of getransformeerde, which describes the transformed form.

In mathematics and statistics, ongetransformeerde data are the input values before applying a transform such as a normalization, standardization, or a mathematical operation like a Fourier or linear transformation. Analysts may compare ongetransformeerde data with their transformed counterparts to assess the effect of a transformation on distributions, scales, or relationships among variables.

In signal processing, the term is commonly used to denote the original time-domain signal, before any frequency-domain representation is obtained by a Fourier transform, Laplace transform, or other spectral operation. The transformed form is typically easier to analyze for certain properties but may obscure the original temporal structure.

Etymology: The prefix on- is negation, and getransformeerde derives from transformeren (to transform) with the past participle form. The term is more common in Dutch-language texts and may be encountered in informal or explanatory discussions rather than formal standards.

See also: transformation, Fourier transform, inverse transform, data preprocessing.