Possible changes
Probabilities
Δ x 1 = [ 1,0,0,0 ] T
P 1 = b N e Δ t
Δ x 2 = [ − 1,1,0,0 ] T
P 2 = p β B x 1 κ + B Δ t
Δ x 3 = [ − 1,0,1,0 ] T
P 3 = q β B x 1 κ + B Δ t
Δ x 4 = [ 0, − 1,0,0 ] T
P 4 = d x 2 Δ t
Δ x 5 = [ − 1,0,0,0 ] T
P 5 = μ x 1 Δ t
Δ x 6 = [ 0, − 1,0,1 ] T
P 6 = r 1 x 2 Δ t
Δ x 7 = [ 0, − 1,0,0 ] T
P 7 = μ x 2 Δ t
Δ x 8 = [ 0,0, − 1,0 ] T
P 8 = μ x 3 Δ t
Δ x 9 = [ 0,0, − 1,1 ] T
P 9 = r 2 x 3 Δ t
Δ x 10 = [ 0,0,0, − 1 ] T
P 10 = μ x 4 Δ t