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Aide de Scilab >> Algèbre Lineaire > Markov Matrices > eigenmarkov

eigenmarkov

normalized left and right Markov eigenvectors

Calling Sequence

[M,Q]=eigenmarkov(P)

Arguments

P

real N x N Markov matrix. Sum of entries in each row should add to one.

M

real matrix with N columns.

Q

real matrix with N rows.

Description

Returns normalized left and right eigenvectors associated with the eigenvalue 1 of the Markov transition matrix P. If the multiplicity of this eigenvalue is m and P is N x N, M is a m x N matrix and Q a N x m matrix. M(k,:) is the probability distribution vector associated with the kth ergodic set (recurrent class). M(k,x) is zero if x is not in the k-th recurrent class. Q(x,k) is the probability to end in the k-th recurrent class starting from x. If P^k converges for large k (no eigenvalues on the unit circle except 1), then the limit is Q*M (eigenprojection).

Examples

//P has two recurrent classes (with 2 and 1 states) 2 transient states
P=genmarkov([2,1],2) 
[M,Q]=eigenmarkov(P);
P*Q-Q
Q*M-P^20

See Also

  • genmarkov — generates random markov matrix with recurrent and transient classes
  • classmarkov — recurrent and transient classes of Markov matrix
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Last updated:
Thu Oct 02 13:54:30 CEST 2014