ID |
原文 |
译文 |
703 |
实验结果表明该机制能够在有效隐藏SDN 指纹信息的同时减少对网络性能的影响。 |
The experimental results show that the mechanism can effectively hide the SDN fingerprint information while reducing the impact on networkperformance. |
704 |
流形学习方法可以发现嵌入于高维观测数据中的低维流形结构, |
Manifold learning method can find the low-dimensional manifold structures embedded in high-dimensionaldata. |
705 |
但是传统的流形学习算法都是假设所有数据位于单一流形上,忽略了高维数据中不同的子集可能存在不同的流形。 |
However, the traditional manifold learning algorithms assume that all samples lie on a single manifold, while the sam-ples in different subsets may belong to different sub-manifolds. |
706 |
针对上述问题,本文提出一种监督多流形鉴别嵌入的维数约简方法,并应用于高光谱遥感影像分类。 |
To solve the above problem, a new dimensionality reduction(DR)method termed supervised multi-manifold discriminant embedding (SMMDE)is proposed for classification of hyper-spectral remote sensing image. |
707 |
该方法首先利用样本数据的类别标签进行多子流形划分,在此基础上采用图嵌入理论构造流形内图和流形间图, |
At first, the proposed method explore the labels of HSI data to divide samples into differentsub-manifolds. Based on the graph embedding framework, the intra-manifold and inter-manifold graphs are constructed to re-present the multi-manifold structure of HSI data, |
708 |
然后通过最小化流形内距离同时最大化流形间距离以增强类内数据聚集性和类间数据分散性,提取低维鉴别特征,改善地物分类性能。 |
and the intra-class aggregation and inter-class separation are enhanced by minimizing the intra-manifold distance and maximizing the inter-manifold distance simultaneously. Therefore, low-dimen-sional discriminant features are obtained to improve the performance of HSI classification. |
709 |
在 University of Pavia (PaviaU)和 KennedySpace Center (KSC)高光谱数据集上的实验表明,相较于其他单流形算法和多流形算法,该方法取得了更高的分类精度,在随机选取 2% 训练样本时,其总体分类精度分别达到 88.04% 和 84.53% ,有效提升了地物分类性能。 |
Experimental results on the Pavi-aU and KSC hyperspectral data sets show that the overall classification accuracies respectively reach 88. 04% and 84. 53%when 2% training samples are randomly selected for training. The proposed SMMDE method can effectively improve classi-fication performance compared with many state-of-art DR algorithms. |
710 |
高可靠性对于星载天线至关重要,印制馈线和焊点往往会严重降低天线的工程可靠性。 |
High reliability is essential for spaceborne antenna, however PCB feeder and solder joint are usually lackingof guarantee in reliability. |
711 |
针对这一问题,本文以超宽带圆锥螺旋天线的设计为例,强化电气、结构和工艺协同设计思想,通过改进传统巴伦结构,提出了电缆、巴伦和螺旋线一体化的无焊接设计方案。 |
Therefore, a integrative and solderless design of cable, balun and spital is proposed using improvedbalun, intensifying the cooperative design idea of electricity, structure and technology. As a example, a UWB conical spiralantenna is designed. |
712 |
仿真结果表明,所设计的天线在整个工作频段内具有良好的宽角高增益覆盖、宽角圆极化特性和前后比指标。 |
The simulated results show that the antenna achieves a wide-angle coverage with high gain and low axialratio, as same as high front-to-back ratios. |