نتایج جستجو برای: feasible direction method
تعداد نتایج: 1816068 فیلتر نتایج به سال:
In this paper we investigate Multi-Objective Integer Linear Programming (MOILP) problems with unbounded feasible region and introduce recession direction for MOILP problems. Then we present necessary and sufficient conditions to have unbounded feasible region and infinite optimal values for objective functions of MOILP problems. Finally we present some examples with unbounded feasible region and fi...
This paper presents an exact formulation of Stochastic or Unconditional Maximum Likelihood (UML) estimation for directions-of-arrival (DOA) finding. In the previous formulation of UML estimation, an important condition is missing. That is the non-negative definiteness of the covariance matrix of signal components without additive noises. Because of the lack of the important condition, inadequat...
in this paper we investigate multi-objective integer linear programming (moilp) problems with unbounded feasible region and introduce recession direction for moilp problems. then we present necessary and sufficient conditions to have unbounded feasible region and infinite optimal values for objective functions of moilp problems. finally we present some examples with unbounded feasible region and fi...
در شاخه سیویل و در ساخت سازه ها همیشه ایمنی و بعد از آن هزینه مهم ترین پارامترهای مورد نظر مهندسان در طراحی بوده است . و در این میان هزینه می توانسته طرحی را مقبول کارفرمایان و توجیه پذیر از نظر اقتصادی نماید. بنابراین در صورتیکه بتوان تمام طرحهای قابل قبول از نظر سازه ای را در برابر هزینه بری های هر کدام مقایسه نمود و بهترین طرح را، انتخاب نمود ایده آل مهندسین خواهد بود. در این پایان نامه به ت...
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In this paper, we investigate the application of feasible direction method for an optimistic nonlinear bilevel programming problem. The convex lower level problem of an optimistic nonlinear bilevel programming problem is replaced by relaxed KKT conditions. The feasible direction method developed by Topkis and Veinott [22] is applied to the auxiliary problem to get a Bouligand stationary point f...
We are concernedwith the nonnegative constraints optimization problems. It is well known that the conjugate gradientmethods are efficient methods for solving large-scale unconstrained optimization problems due to their simplicity and low storage. Combining the modified Polak-Ribière-Polyak method proposed by Zhang, Zhou, and Li with the Zoutendijk feasible direction method, we proposed a conjug...
-A new feasible direction method for linear programming problems is presented. The method is not boundary following. The method proceeds from a feasible interior point in a direction that improves the objective function until a point on a constraint surface is met. At this point searches are initiated in the hyperplane of constant function value by using projections of the bounding constraints ...
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