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Journal of applied research and technology
On-line version ISSN 2448-6736Print version ISSN 1665-6423
Abstract
SANCHEZ-LARIOS, H. and GUILLEN-BURGUETE, S.. A Theoretical Framework for Modeling Asymmetric, Nonpositive Definite and Nonuniform Distance Functions on Rn. J. appl. res. technol [online]. 2010, vol.8, n.3, pp.416-424. ISSN 2448-6736.
In this paper, we give theoretical foundations for modeling distance functions on the usual Euclidean space Rn, where distance may refer to physical kilometers, liters of fuel consumed, time spent in traveling, or transportation cost. In our approach, a distance function d is derived from a function F0 called the fundamental function of d. Our distance functions, unlike metrics, can be asymmetric and non-positive definite, and unlike the Lp norms, they can be nonuniform. We illustrate our theoretical framework by modeling an asymmetric and non-uniform distance function on R2 which can take negative values.
Keywords : Distance function; isotropy; non-uniformity; asymmetry; weighted Lp-norm.