Misplaced Pages

Bingham distribution

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Antipodally symmetric probability distribution on the n-sphere

In statistics, the Bingham distribution, named after Christopher Bingham, is an antipodally symmetric probability distribution on the n-sphere. It is a generalization of the Watson distribution and a special case of the Kent and Fisher–Bingham distributions.

The Bingham distribution is widely used in paleomagnetic data analysis, and has been used in the field of computer vision.

Its probability density function is given by

f ( x ; M , Z ) d S n 1 = 1 F 1 ( 1 2 ; n 2 ; Z ) 1 exp ( tr Z M T x x T M ) d S n 1 {\displaystyle f(\mathbf {x} \,;\,M,Z)\;dS^{n-1}={}_{1}F_{1}\left({\tfrac {1}{2}};{\tfrac {n}{2}};Z\right)^{-1}\cdot \exp \left(\operatorname {tr} ZM^{T}\mathbf {x} \mathbf {x} ^{T}M\right)\;dS^{n-1}}

which may also be written

f ( x ; M , Z ) d S n 1 = 1 F 1 ( 1 2 ; n 2 ; Z ) 1 exp ( x T M Z M T x ) d S n 1 {\displaystyle f(\mathbf {x} \,;\,M,Z)\;dS^{n-1}\;=\;{}_{1}F_{1}\left({\tfrac {1}{2}};{\tfrac {n}{2}};Z\right)^{-1}\cdot \exp \left(\mathbf {x} ^{T}MZM^{T}\mathbf {x} \right)\;dS^{n-1}}

where x is an axis (i.e., a unit vector), M is an orthogonal orientation matrix, Z is a diagonal concentration matrix, and 1 F 1 ( ; , ) {\displaystyle {}_{1}F_{1}(\cdot ;\cdot ,\cdot )} is a confluent hypergeometric function of matrix argument. The matrices M and Z are the result of diagonalizing the positive-definite covariance matrix of the Gaussian distribution that underlies the Bingham distribution.

See also

References

  1. Bingham, Ch. (1974) "An antipodally symmetric distribution on the sphere". Annals of Statistics, 2(6):1201–1225.
  2. Onstott, T.C. (1980) "Application of the Bingham distribution function in paleomagnetic studies". Journal of Geophysical Research, 85:1500–1510.
  3. S. Teller and M. Antone (2000). Automatic recovery of camera positions in Urban Scenes
  4. Haines, Tom S. F.; Wilson, Richard C. (2008). Computer Vision – ECCV 2008 (PDF). Lecture Notes in Computer Science. Vol. 5304. Springer. pp. 780–791. doi:10.1007/978-3-540-88690-7_58. ISBN 978-3-540-88689-1. S2CID 15488343.
  5. "Better robot vision: A neglected statistical tool could help robots better understand the objects in the world around them". MIT News. October 7, 2013. Retrieved October 7, 2013.
Probability distributions (list)
Discrete
univariate
with finite
support
with infinite
support
Continuous
univariate
supported on a
bounded interval
supported on a
semi-infinite
interval
supported
on the whole
real line
with support
whose type varies
Mixed
univariate
continuous-
discrete
Multivariate
(joint)
Directional
Univariate (circular) directional
Circular uniform
Univariate von Mises
Wrapped normal
Wrapped Cauchy
Wrapped exponential
Wrapped asymmetric Laplace
Wrapped Lévy
Bivariate (spherical)
Kent
Bivariate (toroidal)
Bivariate von Mises
Multivariate
von Mises–Fisher
Bingham
Degenerate
and singular
Degenerate
Dirac delta function
Singular
Cantor
Families
Categories: