Questions tagged [simplex-method]

Questions that relates to the "simplex algorithm", from the mathematical optimization field

The Simplex Algorithm (Simplex Method), created by George Bernard Dantzig, operates on linear programs of the following canonical form:

\begin{align}\max\quad&c^\top x\\\text{s.t.}\quad& Ax\le b\\\quad & x\ge 0\end{align}

where,

  • $x=(x_{1},x_{2},\cdots,x_{N})$

  • $c=(c_{1},c_{2},\cdots,c_{N})$ where $c$ are the coefficients of the objective $A$, which is a $p\times n$ matrix

  • $b=(b_{1},b_{2},\cdots,b_{N})$ is non-negative

There is a straightforward process to convert any linear program into one in standard form, so using this form of linear program results in no loss of generality.

Reference:

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Linear programming dual simplex method problem

enter image description here I've this question and I changed the sign for the max Z and then found the dual of primal. But here the problem is that now I have -ve values in ratio. I am thinking of changing the min to max by introducing negative…
user916160
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Initial vertex in Simplex algorithm

Conceptually, the simplex algorithm goes from one vertex of a polytope to the next. However, how is the initial vertex computed ? If I follow the simplex tableau scheme, it should at some point correspond to the computation of an initial vertex.…
carlo__
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