Saddlepoint approximation to the distribution of the total distance of the von Mises-Fisher continuous time random walk.
Riccardo GattoPublished in: Appl. Math. Comput. (2018)
Keyphrases
- random walk
- von mises fisher
- markov chain
- unit sphere
- transition probability matrix
- noise model
- mixture model
- transition probabilities
- multi variate
- stationary distribution
- markov random walk
- distance measure
- state space
- gaussian distribution
- spherical harmonics
- unsupervised classification
- em algorithm
- medical imaging
- reinforcement learning
- gaussian mixture model
- generative model
- medical images
- feature space