ID 原文 译文
22345 然后通过提出混合交叉策略和孤立节点处理机制，同时利用动态学习因子和倒置变异策略，提升遗传算法节点序寻优的性能。 Hybrid crossover strategy and isolating node operation are adopted to improve the optimal result of node order searched by genetic algorithm. And dynamic learning constants and inverted mutation strategy are used at the same time.
22346 最后将得到的节点序作为 K2 算法的先验知识得到最优贝叶斯网络结构。 The optimized node sequence is taken as a prior knowledge of the K2 algorithm to construct the optimal Bayesian network structure.
22347 仿真结果表明，该方法解决了 K2 算法依赖先验知识的问题，相比于其它优化算法，评分值平均增加了 13.11%。 Compared with other optimization algorithms, experimental results indicate that the NOK2 algorithm can significantly increase nearly 13.11% in the scoring metric values.
22348 在云计算和数据中心环境中，底层单个物理服务器的失效将对上层虚拟网络的服务性能造成很大的影响，现有利用冗余备份的方法能够在一定程度上降低底层物理设备失效带来的影响，但未考虑到物理服务器的同构性所带来的问题，为此，该文提出一种异构备份式的虚拟网映射方法。 The failure of a single physical server will cause a bad impact on the performance of the virtual networks in the cloud computing and data center environments. The existing approaches that provision redundant and backup physical resources are able to reduce the impact due to failure of physical devices, however, they do not pay attention to homogeneous issues of the physical servers. Thus, a heterogeneous-backup virtual network embedding method is proposed.
22349 首先，只对关键的虚拟机进行冗余备份，降低备份资源的开销； Firstly, the redundant and backup physical resources are only provided to critical virtual machines so that the method can save the overhead of backup resources.
22350 然后，确保提供备份虚拟机的物理服务器与原物理服务器的系统类型的异构性，提高虚拟网的弹性能力； Then, in order to improve resilience of the virtual networks, substrate nodes corresponding to the primary and backup embedding of each virtual machine must be heterogeneous.
22351 最后，以最小化链路资源开销作为虚拟网的映射目标，进一步降低备份资源的开销。 Finally, the total cost of provisioning bandwidth on the substrate links for the total virtual network is minimized as the objective function to further save the overhead of backup resources.
22352 实验表明，该方法在保证虚拟网络映射性能的前提下，能够大大提高虚拟网络的弹性能力。 Simulation experiments demonstrate that the proposed approach is able to significantly improve resilience of the virtual networks on the premise of guaranteeing the performance of virtual networks embedding.
22353 该文研究了有限域( )2GF q上长度为() ()2211mqq--的常循环码。 In this paper, constacyclic codes over the finite field ( )2GF q of length () ()2211mqq-- are studied.
22354 给出一类常循环码是厄米特对偶包含码的一个充要条件，并确定了这类常循环厄米特对偶包含码的参数。 A sufficient and necessary condition for a class of constacyclic codes to be Hermitian dual-containing codes is given, and the parameters of this class of constacyclic codes are determined.