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equal to zero. In a line of objective function in the F.T. column is a value of size of objective function.
This value is used for realization of directional searching of the decision on a method of branches and
borders. Decoding on the basis of a method of branches and borders is iterated that means creation of
a tree of decisions with tops of minimum values of basic plans. Route by a tree from initial top to
some fixed top determines the admissible sequence of the choice of integer values for task variables.
Main goal of decoding by proposed method is receiving integer variables of x and y at minimum
possible value of objective function L.
Table 1 - The initial simplex table
F.V
F. T. w 1 w 2 w 3 w 4 w 2n 3− w 2n 2− w 2n 1 − w 2n
B.V. …
x 0 x * 0 1 -1 0 0 … 0 0 0 0
x 1 x * 1 0 0 1 -1 … 0 0 0 0
…
x n1 x * n1− 0 0 0 0 … 0 0 1 -1
−
x n (m1 x−− * 0 ) -1 1 0 0 … 0 0 0 0
x n1+ (m1 x−− * 1 ) 0 0 -1 1 … 0 0 0 0
…
x 2n 1 − (m1 x−− * n1− ) 0 0 0 0 … 0 0 -1 1
y 0 1 ( ax − * x + * ) b a − a − 1 1 …
m 0 1 m m m m
…
y 1 ( ax * − x * + ) b … a − a − 1 1
−
n2
−
−
m n3 n 2 m m m m
L 0 -1 -1 -1 -1 … -1 -1 -1 -1
Formally the method of branches and borders can be described by the sequence of the following
stages.
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