This function verifies if a state is reachable from another, i.e.,
if there exists a path that leads to state j leaving from state i with
positive probability
is.accessible(object, from, to)
Arguments
- object
A markovchain
object.
- from
The name of state "i" (beginning state).
- to
The name of state "j" (ending state).
Details
It wraps an internal function named reachabilityMatrix
.
References
James Montgomery, University of Madison
Author
Giorgio Spedicato, Ignacio Cordón
Examples
statesNames <- c("a", "b", "c")
markovB <- new("markovchain", states = statesNames,
transitionMatrix = matrix(c(0.2, 0.5, 0.3,
0, 1, 0,
0.1, 0.8, 0.1), nrow = 3, byrow = TRUE,
dimnames = list(statesNames, statesNames)
)
)
is.accessible(markovB, "a", "c")
#> [1] TRUE