Research output: Contribution to journal › Article › peer-review
Reduction of a Minimization Problem of a Separable Convex Function Under Linear Constraints to a Fixed Point Problem. / Krylatov, A. Yu.
In: Journal of Applied and Industrial Mathematics, Vol. 12, No. 1, 01.01.2018, p. 98-111.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reduction of a Minimization Problem of a Separable Convex Function Under Linear Constraints to a Fixed Point Problem
AU - Krylatov, A. Yu
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The paper is devoted to studying a constrained nonlinear optimization problem of a special kind. The objective functional of the problem is a separable convex function whose minimum is sought for on a set of linear constraints in the form of equalities. It is proved that, for this type of optimization problems, the explicit form can be obtained of a projection operator based on a generalized projection matrix. The projection operator allows us to represent the initial problem as a fixed point problem. The explicit form of the fixed point problem makes it possible to run a process of simple iteration. We prove the linear convergence of the obtained iterative method and, under rather natural additional conditions, its quadratic convergence. It is shown that an important application of the developed method is the flow assignment in a network of an arbitrary topology with one pair of source and sink.
AB - The paper is devoted to studying a constrained nonlinear optimization problem of a special kind. The objective functional of the problem is a separable convex function whose minimum is sought for on a set of linear constraints in the form of equalities. It is proved that, for this type of optimization problems, the explicit form can be obtained of a projection operator based on a generalized projection matrix. The projection operator allows us to represent the initial problem as a fixed point problem. The explicit form of the fixed point problem makes it possible to run a process of simple iteration. We prove the linear convergence of the obtained iterative method and, under rather natural additional conditions, its quadratic convergence. It is shown that an important application of the developed method is the flow assignment in a network of an arbitrary topology with one pair of source and sink.
KW - constrained nonlinear optimization
KW - fixed point problem
KW - generalized projection matrix
KW - network flow assignment
UR - http://www.scopus.com/inward/record.url?scp=85043256386&partnerID=8YFLogxK
U2 - 10.1134/S199047891801009X
DO - 10.1134/S199047891801009X
M3 - Article
AN - SCOPUS:85043256386
VL - 12
SP - 98
EP - 111
JO - Journal of Applied and Industrial Mathematics
JF - Journal of Applied and Industrial Mathematics
SN - 1990-4789
IS - 1
ER -
ID: 36927276