hemimetric

English

hemi- +‎ metric

hemimetric (plural hemimetrics)

(mathematics) An abstraction of distance; a function, d, with two arguments that satisfies d(x,x) = 0 and d(x, y) + d(y,z) ≥ d(x,z) (the triangle inequality) for all x,y,z in the domain.
- 2016, Adish Singla, Sebastian Tschiatschek, Andreas Krause, “Actively Learning Hemimetrics with Applications to Eliciting User Preferences”, in arXiv‎:
  Without exploiting structural constraints of the hemimetric polytope, learning the distances between each pair of items requires ${\\displaystyle \\Theta (n^{2})}$ queries.

单词	hemimetric
释义	hemimetric English Etymology hemi- +‎ metric Noun hemimetric (plural hemimetrics) (mathematics) An abstraction of distance; a function, d, with two arguments that satisfies d(x,x) = 0 and d(x, y) + d(y,z) ≥ d(x,z) (the triangle inequality) for all x,y,z in the domain. 2016, Adish Singla, Sebastian Tschiatschek, Andreas Krause, “Actively Learning Hemimetrics with Applications to Eliciting User Preferences”, in arXiv‎: Without exploiting structural constraints of the hemimetric polytope, learning the distances between each pair of items requires ${\\displaystyle \\Theta (n^{2})}$ queries.
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