deltatechniek

Deltatechniek is a Dutch term used to describe techniques and methods that focus on changes or differences between states, commonly represented by the symbol Δ. The expression is not a single, codified discipline, but a cross-disciplinary umbrella used in Dutch-language texts to refer to approaches for analyzing, modeling, and applying incremental changes in systems, data, and processes.

In mathematics and numerical analysis, deltatechniek covers finite difference methods and discrete derivatives, used to approximate changes when an exact derivative is unavailable. In physics and engineering, it appears in the study of quantities that change over time or space, such as delta quantities in signal processing or control theory. In data science and economics, delta concepts underpin sensitivity analysis, scenario testing, and change detection.

Common techniques include calculation of Δ values, accumulation of deltas for integration, delta encoding for data compression, and, in software engineering, delta debugging or delta testing (difference-based approaches).

Because deltatechniek is not a rigidly defined field, its exact meaning is context-dependent and varies with industry and curriculum.