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2012, vol. 22, br. 1, str. 107-114
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A slight modification of the first phase of the simplex algorithm
(naslov ne postoji na srpskom)
Projekat: Teorija grafova i matematičko programiranje sa primenama u hemiji i računarstvu (MPNTR - 174033)
Ključne reči: linear programming; simplex algorithm; canonical form; two phase simplex algorithm; new first phase simplex algorithm
Sažetak
(ne postoji na srpskom)
In this paper we give a modification of the first phase procedure for transforming the linear programming problem, given in the standard form to the canonical form, i.e., to the form with one feasible primal basis where standard simplex algorithm can be applied directly. The main idea of the paper is to avoid adding m artificial variables in the first phase. Instead, Step 2 of the proposed algorithm transforms the problem to the form with m−1 basic columns. Step 3 is then iterated until the m−th basic column is obtained, or it is concluded that the feasible set of LP problem is empty.
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Reference
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Cvetković, D., Čangalović, M., Dugošija, Đ., Kovačević-Vujčić, V., Simić, S., Vuleta, J. (1996) Kombinatorna optimizacija - matematička teorija i algoritmi. Beograd: Društvo operacionih istraživača Jugoslavije
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Dantzig, G.B. (1963) Linear programming and extensions. Princeton, N.J: Priceton university presss
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Vujčić, V., Ašić, M., Miličić, N. (1980) Matematičko programiranje. Beograd: Matematički institut
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