Distance-directed augmenting path algorithms for maximum flow and parametric maximum flow problems

Author(s):  
Ravindra K. Ahuja ◽  
James B. Orlin
Mathematics ◽  
2021 ◽  
Vol 9 (15) ◽  
pp. 1716
Author(s):  
Adrian Marius Deaconu ◽  
Delia Spridon

Algorithms for network flow problems, such as maximum flow, minimum cost flow, and multi-commodity flow problems, are continuously developed and improved, and so, random network generators become indispensable to simulate the functionality and to test the correctness and the execution speed of these algorithms. For this purpose, in this paper, the well-known Erdős–Rényi model is adapted to generate random flow (transportation) networks. The developed algorithm is fast and based on the natural property of the flow that can be decomposed into directed elementary s-t paths and cycles. So, the proposed algorithm can be used to quickly build a vast number of networks as well as large-scale networks especially designed for s-t flows.


2019 ◽  
Vol 97 ◽  
pp. 01003 ◽  
Author(s):  
Irina Burkova ◽  
Boris Titarenko ◽  
Amir Hasnaoui ◽  
Roman Titarenko

Resource allocation problems in project management are notoriously complex. Therefore the development of efficient algorithms for solving various specific cases is a real problem. This paper shows a specific case of the problem, where a program has a particular structure. The resource allocation problem in such a program is reduced to classical Johnson’s problem or job-shop scheduling problem. Effective solution methods, by way of reducing to maximum flow problems, are suggested for some types of resources. For other cases, heuristic rules are developed, with a description of the situations in which these rules allow good enough solutions to be obtained.


2008 ◽  
Vol 19 (2) ◽  
pp. 200-216 ◽  
Author(s):  
Steffen Rebennack ◽  
Ashwin Arulselvan ◽  
Lily Elefteriadou ◽  
Panos M. Pardalos

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