threshold function

English Thesaurus

1. a function that takes the value 1 if a specified function of the arguments exceeds a given threshold and 0 otherwise (noun.linkdef)

hypernym	:	function, map, mapping, mathematical function, single-valued function,
definition	:	(mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function) (noun.linkdef)