- a)
- edge
Let us denote the probability of the transition from condition to condition
with
. In the simplest case all of the probabilities
are equal, but usually
.
- b)
- way
Going on subsequent edges the probabilities are multiplied, so the
probability is multiplicative.
- c)
- between two nodes
In this case for the resultant probability we have
, with .
Of course, usually
.
- d)
- between a node and a set (of nodes)
Similarly, as in point c).
EXAMPLE
Let us consider a system in the whole-type probability model with conditions
, and and the transitions
- trans. 1:
-
- trans. 2:
-
The probability of transition 1 is
The probability, that from in at most two steps we arrive in is
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