ID 原文 译文
56258 首先,我们提出了一种基于LSTM的改进网络结构,并结合门控循环单元（gated recurrent unit, GRU）解码器,构造了一种对非平稳特性具有鲁棒性的自编码器模型以提取故障特征. Combined with the GRU (gated recurrent unit) decoder, an LSTM-based encoder-decoder model is proposedto extract the feature vectors, which has the robustness to non-stationary characteristics.
56259 进而,采用t-SNE （t-distributed stochastic neighbour embedding）对提取的故障特征向量进行降维,使用DBSCAN （density-based spatial clustering of applications with noise）进行故障聚类与识别,实现了对微小渐变故障的无监督诊断. Then, the t-SNE(t-distributed stochastic neighbor embedding) approach is used to reduce the dimension of extracted featurevectors, and the DBSCAN (density-based spatial clustering of applications with noise) is utilized for clusteringand recognizing faults to realize the unsupervised fault diagnosis.
56260 最后,我们基于CRH2牵引系统的半物理仿真平台数据对上述方案进行了验证. The proposed approach is verified using thedata from a semi-physical platform of the CRH2 traction system, in which the known and unknown faults areillustrated.
56261 实验结果表明,该无监督诊断方法对同时包含已知和未知故障的情况能够达到95%以上的诊断准确率. The results show that the proposed unsupervised approach can achieve a fault diagnosis rate of over95%.
56262 隐私信息的泄露已成为密码系统当前的严重安全性隐患,因此抗泄露性将是密码机制必备的安全属性之一. Leakage of private information has become a threat to the security of cryptography systems.
56263 目前,通常基于非交互式零知识论证系统、一次性损耗滤波器、强一次性签名等密码基础工具来实现选择密文攻击（chosen-ciphertext attack, CCA）安全的抗泄露身份基加密（identity-based encryption, IBE）机制的通用构造; It has become a common security requirement that a cryptography scheme should withstand various leakage attacks. The non-interactive zero-knowledge (NIZK) argument system, one-time lossy filter (OT-LF) and one-time signature were widely used to create the generic constructions of leakage-resilient identity-based encryption (IBE) scheme with chosen-ciphertext attack (CCA) security.
56264 然而,由于底层工具的计算效率较低,导致传统通用构造尚未达到理想的计算效率. However, the computational efficiency of the corresponding generic construction is low because the underlying cryptographic tool is low.
56265 针对上述不足,本文提出一个双封装密钥的身份基哈希证明系统（identity-based Hash proof system with two encapsulated key, T-IB-HPS）的新密码学原语,并详细介绍了T-IB-HPS的形式化定义及安全属性; Thus, to solve the above problem, a new cryptographic primitive, called identity-based hash proof system with two encapsulated-key (T-IB-HPS), is proposed.
56266 同时,基于T-IB-HPS和消息验证码（message authentication code, MAC）设计了CCA安全的抗泄露IBE机制的新型通用构造,并基于T-IB-HPS和MAC的安全属性,对通用构造的CCA安全性进行了形式化证明; The new generic constructions of leakage resilient IBE scheme with CCA security is created from the T-IB-HPS and message authentication code (MAC), and the security of the above proposed scheme is proved from the security of the underlying cryptographic tool.
56267 为进一步展示本文通用构造的实用性,在T-IB-HPS形式化定义的基础上,我们设计了T-IB-HPS的具体实例,并基于判定的双线性Diffie-Hellman假设证明了本文实例的安全性. To further show the practicability, an instantiation of T-IB-HPS is constructed, and the formal security proof of the above instantiation is shown based on the decisional bilinear Diffie-Hellman (DBDH) assumption.