ID |
原文 |
译文 |
40206 |
以MHSN的用户兴趣挖掘为例,论述了基于用户空间的MHSN的融合方法,并以微博和贴吧进行了数据采集和用户兴趣挖掘的实验分析。 |
Taking the user interest mining of MHSN as an example, this paper discusses the integration method of MHSN based on user space, and conducts experimental analysis on data collection and user interest mining of Weibo and Tieba. |
40207 |
结果表明,本文所提的面向MHSN的突发事件融合检测及用户兴趣融合挖掘方法可以有效地改善突发事件检测和用户兴趣挖掘的效果。 |
The results show that the proposed methods of emergency integration detection and user interest integration mining for MHSN can effectively improve the effect of emergency detection and user interest mining. |
40208 |
为科学合理地评估电网运行安全能力,本文采用等级相关主观赋权法和指标信息量集成客观权重的综合赋权法,综合确定电网运行安全能力评价指标体系最终权重。 |
In order to scientifically and reasonably evaluate the power grid operation safety capability, this paper first adopts a comprehensive weighting method of the rank-related subjective weighting method and the index information amount to integrate objective weights for comprehensively determining the final weight of the grid operation safety capability evaluation index system. |
40209 |
构建了含有分辨系数的改进灰色关联综合评价模型,对某电网运行6个时期的安全能力进行评价,并与传统的灰色绝对关联度模型进行了对比。 |
Then, an improved gray correlation comprehensive evaluation model with resolution coefficient is constructed. Finally, the safety capability of a power grid operation in six periods is evaluated, and compared with the traditional gray absolute correlation model. |
40210 |
对比结果验证了本文模型的有效性和实用性。 |
Results verify the validity and practicability of the proposed model. |
40211 |
调频连续波(Frequency modulated continuous wave,FMCW)雷达中的频率测量精度直接决定了测距的精度, |
Frequency-modulated continuous-wave(FMCW) radars utilize the frequency difference between the transmitted signal and the received echo signal to calculate the target range, so estimating the beat frequency is an important procedure in FMCW radar. |
40212 |
但实际应用中频率估计受到负频谱和多目标带来的多频信号的干扰,误差较大。 |
However, the interference of negative frequency component and the multi-frequency component deteriorate the accuracy of frequency estimation in practical application. |
40213 |
本文基于常用的单频频率估计方法 Orguner算法提出了一种新的多频频率估计方法,并利用迭代逐步消除负频谱和其他频率带来的干扰。 |
In this paper, a new frequency estimation method is proposed for multi-frequency estimation, which is based on the Orguner method and iteration. |
40214 |
该方法只需要对信号进行离散傅里叶变换(Discrete Fourier transform,DFT),进而取各频率点附近的3个采样值实现精确的频率估计。 |
The method can accurately estimate frequency only using three discrete Fourier transform(DFT) samples near every frequency component. |
40215 |
仿真结果证明,本文提出的方法无论在无噪声条件下还是在高斯白噪声条件下均能带来频率估计精度的提升,且无需加窗处理,相比传统方法拥有更低的计算复杂度。 |
Simulations confirm that the proposed method outperforms traditional alternatives both in noiseless scenario and Gaussian white noise scenario, and has lower complexity because of no windowing processing. |