ID 原文 译文
24225 性能测试结果表明采用该方法可以通过有限次的洗牌筛选出攻击者,降低 DDoS 攻击对合法访问的影响; The results of performance test show that with this approach attackers in limited times of shuffling can be isolated and the effects of DDoS attacks on legal flows can be reduced.
24226 能力测试结果则说明了在由一个控制器组成的环形拓扑结构下该方法的防御效果与攻击流的大小无关,而是仅与攻击者的数目有关。 The outcomes of defense ability test demonstrate that the efficiency of the proposed dynamic approach has nothing to do with the size of attack flow, but is only related to the number of attackers in the ring topology structure which is composed of a single controller.
24227 该文针对二元假设检验问题,首先在贝叶斯准则的基础上,分析了最小化贝叶斯代价所对应的最优噪声,将贝叶斯代价的最小化问题等价为虚警概率和/或检测概率的最优化。 The optimal noise that minimizes Bayes risk for a binary hypothesis testing problem is analyzed firstly. As a result, the minimization of Bayes risk can be equivalent as the optimization of the detection probability()DP and/or false alarm probability FA() P.
24228 其次,在保证一定虚警概率和检测概率的前提下,建立起能同时改善检测概率和虚警概率的模型。 Secondly, a noise enhanced model, which can increase DP and decrease FAP simultaneously, is established under the premise of maintaining predefined FAP and DP.
24229 然后分别给出当检测概率一定时虚警概率最小和虚警概率一定时检测概率最大这两种极限情况下对应的最优加性噪声,并对其进行线性凸组合以获得模型所需的最优加性噪声,进一步分析并证明了该模型能够成立的充分条件。 Then the optimal additional noise of this model is obtained by a convex combination of two optimal noises of two limit cases, which are the minimization of FAP with maintaining the predefined DP and the maximization of DP with maintaining the predefined FAP, respectively. Furthermore, the sufficient conditions for this model are given.
24230 再次,获得先验概率已知和未知两种情况下最小化贝叶斯代价时所对应的加性噪声,且当先验知识发生改变时,该算法只需调整加性噪声中一个可变参数即可获得相应的最优贝叶斯代价。 What's more, the additive noise that minimizes the Bayes risk is determined when the prior probabilities are known or not, and the corresponding additive noise can be obtained by recalculating a parameter only if the prior information changes.
24231 最后,结合具体的检测问题,通过仿真验证了所提算法的有效性。 Finally, the availability of algorithm is proved through the simulation combined with a specific detection example.
24232 该文提出一种新的移位序列集的构造方法,并基于这些新的移位序列,通过交织周期为 N 的完备高斯整数序列,得到一类具有灵活相关区长度的周期为 2N 的高斯整数零相关区序列集。 A new method of construction of shift sequence sets is proposed, and based on these shift sequences, a new class of Gaussian integer sequence sets with period 2N which can choose Zero Correlation Zone (ZCZ) length flexibly is obtained by interleaving one perfect Gaussian integer sequence with period N.
24233 这类新的序列集的参数能接近甚至达到 Tang-Fan-Matsuji 界,所以序列集的性能是最佳的或者几乎最佳的。 The new sequence sets whose parameters can reach or approach the Tang-Fan-Matsuji bound are optimal or almost optimal.
24234 高斯整数零相关区序列集可为高速准同步扩频系统提供更多的地址选择空间。 Gaussian integer sequence sets with zero correlation zone can provide more address selection for high-speed quasi-synchronous spread spectrum system.