supportterm
Supportterm is a term used in mathematical modeling and signal processing to describe a component of a model that emphasizes the support of a function or signal. It refers to a piece of a representation whose influence is confined to a localized region of the domain.
Definition and construction. A supportterm is a component whose support—the set where it is nonzero or above
Properties. Supportterms are typically localized, can be sparse, and their supports may be disjoint or overlap.
Applications. They appear in image and audio processing to model localized features, in sparse representations to
Variants and note. The exact definition and usage of the term supportterm vary between authors and disciplines;
See also. Support of a function, sparse representation, basis function, finite element method.