ID 原文 译文
24955 首先，在全局搜索阶段引入非线性惯性权重改善蝴蝶位置更新公式，自适应调节算法在不同进化时期的搜索范围和粒度，提高算法的收敛速度与寻优精度; The nonlinear inertial weight is introduced in the global search stage to improve the update equation of butterfly position, the search range and granularity of the algorithm in different evolution periods are adjusted adaptively, and the convergence speed and optimization accuracy of the algorithm are improved．
24956 然后通过加入 F 分布全局自适应随机变异对全局公式进一步改进，提升算法的全局探索遍历性，防止出现低精度早熟现象; The global equation is further improved by adding Fdistribution global adaptive random mutation to improve the global search ergodicity of the algorithm, and prevent the occurrence of low precision precocious phenomenon．
24957 最后在局部搜索阶段融入具有判定系数和扰动因子的双向差分变异策略，在不减损种群多样性的同时使蝴蝶个体的探索更具方向性，有利于算法摆脱局部极值点，加快收敛速度。 The bidirectional differential mutation strategy with decision coefficient and disturbance factor is integrated in the local search stage, which makes the exploration of butterfly individuals more directional without derogating the diversity of the population, which is beneficial to the algorithm to get rid of the local extremum points and speed up the convergence speed．
24958 理论分析证明了改进算法的时间复杂度与基本蝴蝶优化算法一致，6 种代表性对比算法在 CEC 2017 基准函数上进行的多种维度测试结果表明，改进算法在求解高维复杂函数优化问题时收敛速度和寻优精度明显优于其它对比算法，维度变化对求解性能的影响更小，寻优性能更好更稳定。 The theoretical analysis proves that the time complexity of the improved algorithm is consistent with the basic butterfly optimization algorithm. The multi-dimensional test results of six representative contrast algorithms on benchmark functions of CEC 2017 show that the optimization accuracy and convergence speed of the improved algorithm is obviously better than those of other contrast algorithms in solving the optimization problem of high-dimensional complex functions, and the change of dimensions have less impact on the performance of the algorithm, and the optimization performance is better and more stable．
24959 为弥补现有研究在软件定义网络(Software-Defined Networking，SDN)控制平面未知漏洞防御方面的空白，本文提出了一种基于多维异构特征与反馈感知调度的内生安全控制平面的设计方案。 In order to make up for the gap of the existing research in the defense of unknown SDN (Software-Defined Networking) vulnerabilities, this paper proposes an SDN endogenous security control plane based on multi-dimensional het-erogeneous features and feedback-aware scheduling strategy．
24960 该方案以“冗余、异构和动态”为切入点，通过组合执行体冗余集构建策略、多维异构元素着色策略和动态反馈感知调度策略，有效增加 SDN 控制平面对攻击者所呈现的执行体时空不确定性(逆转攻防不对称性)。 This scheme effectively increases the spatio temporal uncertainty of the execution body in the SDN control plane (reversing the asymmetry between attack and defense) by combining a redundant set construction strategy, a multi-dimensional heterogeneous element coloring strategy, and a dynamic feedback-a-ware scheduling strategy．
24961 相关仿真结果表明该方案可以收敛全局执行体数目、增加执行体之间的多维异构度并降低系统全局失效率。 The related simulation results show that the scheme can converge the number of executive bodies, increase the multi-dimensional heterogeneity index and reduce the global failure rate of the system．
24962 受编码构造原理限制，极化(Polar)码的码长只能是 2 的幂次方，不能很好地适应信道状况和系统资源对编码参数在灵活性方面的要求。 The length of the conventional polar code is limited to the power of two due to its basic construction principle, which may not guarantee the flexibility requirement of the coding parameters for the channel situations and system resources．
24963 凿孔、缩短和重复操作是解决该问题的三种基本技术手段。 Puncturing, shortening and repetition are three main techniques to overcome this problem．
24964 本文从分层结构角度，提出一种基于周期性分层重排构造的凿孔设计算法，能够方便地得到码长和码率灵活可调的速率兼容极化码(Ｒate-Compatible Punctured Polar，ＲCPP); A new puncturing algorithm based on hierarchical permutation structure is presented，which can conveniently construct the rate-compatible punctured polar (ＲCPP) with flexible lengths and rates．