ID 原文 译文
24355 由于社交类应用涉及的隐私数据类型非常多，导致这类应用在被广泛使用的同时，频繁出现用户隐私泄露事件，但是目前还鲜有针对社交应用的隐私泄露检测机制的研究。 Since social applications involve various types of information related to the user privacy, events of privacy leakage occur frequently along with their popular applications and few studies are available on the privacy leakage detection for social applications.
24356 该文结合 Android 系统的特性，提出一个面向Android 社交类应用检测框架 X-Decaf(Xposed-based-detecting-cache-file)，创新性地利用污点追踪技术以及Xposed 框架，获取应用内疑似泄露路径，监测隐私数据的缓存文件。 With the combination of the characteristics of the Android system as well as the exploitation of the taint tracking technology and Xposed framework, a privacy leakage detection tool named X-Decaf (Xposed-based-detecting-cache-file) is proposed, which is oriented to social applications on Android platform. It suspects the leakage paths within the applications and detects the privacy data's cache files.
24357 此外，该文给出了对隐私泄露进行评级的建议，并利用该框架对 50 款社交类应用进行了检测，发现社交类应用普遍存在泄露用户隐私信息的漏洞。 This paper also presents a suggestion for the evaluation of the privacy leakage. Evaluation results of 50 kinds of Android social applications show that many vulnerabilities of user privacy leakage exist in the social applications on Android platform.
24358 针对各种环境声对声音事件识别的影响，该文提出一种基于优化的正交匹配追踪(Orthogonal Matching Pursuit, OMP)声音事件识别方法。 A sound event recognition method based on optimized Orthogonal Matching Pursuit (OMP) is proposed for decreasing the influence of sound event recognition on various environments.
24359 首先，利用 OMP 稀疏分解并重构声音信号，保留声音信号的主体部分，减小噪声的影响。其中，使用粒子群(Particle Swarm Optimization, PSO)算法优化搜索最优原子，实现 OMP 的快速稀疏分解。 Firstly, OMP is used for sparse decomposition and reconstruction of sound signal to decrease the influence of noise and reserve the main body of sound signal, where Particle Swarm Optimization (PSO) is adopted to accelerate the best atom searching in the process of sparse decomposition.
24360 接着，对重构声音信号提取 Mel 频率倒谱系数(Mel-Frequency Cepstral Coefficients, MFCCs)，与 OMP时-频特征和基频(PITCH)特征，组成优化 OMP 的复合特征。 Then, an optimized composited feature of Mel-Frequency Cepstral Coefficients (MFCCs), time-frequency OMP feature, and PITCH feature is extracted from reconstructed signal.
24361 最后，通过优化 OMP 复合特征，使用随机森林(Random Forests, RF)对 40 种声音事件在不同环境不同信噪比下进行识别。 Finally, Random Forests (RF) classifier is employed to recognize 40 classes of sound events in different environments and Signal-to-Noise Rates (SNRs).
24362 实验结果表明，优化 OMP 复合特征结合 RF 的方法能有效地识别各种环境下的声音事件。 The experiment result shows that the proposed method can effectively recognize sound events in various environments.
24363 该文在优化渐变槽天线结构基础上，采用栅形开槽和加载周期结构，设计了一款平面端射天线。 Based on optimized geometry structure of tapered slot antenna, an end-fire printed antenna is designed with rectangular-grooved and periodic structure.
24364 通过数值模拟，分析了栅形开槽和周期结构对天线辐射特性的影响。 Its effects on the radiation pattern of antenna is studied and simulated.