Research on Network Congestion Control Based on Quantum Genetic Algorithm

2014 ◽  
Vol 513-517 ◽  
pp. 845-849
Author(s):  
Gang Lei ◽  
Xia Yin ◽  
Wei Shi

An optimization mathematical model of QoS routing, which with the objectives of network congestion control, is presented in this paper. Combining quantum computation and genetic algorithm, an algorithm for network congestion control based on quantum genetic algorithm (QGA) is proposed. Quantum bit and quantum rotation gate operation are used to update the chromosomes. The simulation results manifest that this algorithm is of fast speed and high efficiency and easily escape from local optimal solution. It can improve network performance and arrive at the purpose of congestion control.

Photonics ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 502
Author(s):  
Tianyang Liu ◽  
Qiang Sun ◽  
Huachun Zhou ◽  
Qi Wei

The problem of network coding resource optimization with a known topological structure is NP-hard. Traditional quantum genetic algorithms have the disadvantages of slow convergence and difficulty in finding the optimal solution when dealing with this problem. To overcome these disadvantages, this paper proposes an adaptive quantum genetic algorithm based on the cooperative mutation of gene number and fitness (GNF-QGA). This GNF-QGA adopts the rotation angle adaptive adjustment mechanism. To avoid excessive illegal individuals, an illegal solution adjustment mechanism is added to the GNF-QGA. A solid demonstration was provided that the proposed algorithm has a fast convergence speed and good optimization capability when solving network coding resource optimization problems.


2016 ◽  
Vol 30 (3) ◽  
pp. 925-935 ◽  
Author(s):  
Mosleh M. Abualhaj ◽  
Ahmad Adel Abu-Shareha ◽  
Mayy M. Al-Tahrawi

Author(s):  
CHENGYING MAO ◽  
XINXIN YU

The quality of test data has an important impact on the effect of software testing, so test data generation has always been a key task for finding the potential faults in program code. In structural testing, the primary goal is to cover some kinds of structure elements with some specific inputs. Search-based test data generation provides a rational way to handle this difficult problem. In the past, some well-known meta-heuristic search algorithms have been successfully utilized to solve this issue. In this paper, we introduce a variant of genetic algorithm (GA), called quantum-inspired genetic algorithm (QIGA), to generate the test data with stronger coverage ability. In this new algorithm, the traditional binary bit is replaced by a quantum bit (Q-bit) to enlarge the search space so as to avoid falling into local optimal solution. On the other hand, some other strategies such as quantum rotation gate and catastrophe operation are also used to improve algorithm efficiency and quality of test data. In addition, experimental analysis on eight real-world programs is performed to validate the effectiveness of our method. The results show that QIGA-based method can generate test data with higher coverage in much smaller convergence generations than GA-based method. More importantly, our proposed method is more robust for algorithm parameter change.


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