ID |
原文 |
译文 |
45676 |
针对智能驾驶系统处理大量驾驶数据时出现的效率和精度不足的问题,提出一种基于贝叶斯模型来处理驾驶数据,识别和预测人类驾驶行为的方法。 |
Since the existing intelligent driving systems are lack of efficiency and accuracy when processing huge number of driving data, a brand new approach of processing driving data was developed to identify and predicate human driving behavior based on Bayesian model. |
45677 |
该方法可以无监管地通过驾驶数据对应地推断出具体驾驶行为,共分为 2 步:第一步,通过贝叶斯模型分割算法将惯性传感器收集到驾驶数据分割为近线性分段;第二步,通过 LDA拓展模型将线性分段聚集为具体的驾驶行为(如制动、转弯、加速和惯性滑行)。 |
The approach was proposed to take two steps to deduce the specific driving behavior from driving data correspondingly without any supervision, the first step being using Bayesian model segmentation algorithm to divide driving data that inertial sensor collected into near-linear segments with the help of Bayesianmodel segmentation algorithm, and the second step being using extended LDA model to aggregate those linear segments into specific driving behavior (such as braking, turning, acceleration and coasting). |
45678 |
离线实验和在线实验结果表明,在处理大量驾驶数据的情况下,该方法效率和识别精度更高。 |
Both offline and online experiments are conducted to verify this approach and it turns out that approach has higher efficiency and recognition accuracy when dealing with numerous driving data. |
45679 |
在野外环境部署大规模传感器网络时,往往采用随机部署方式,导致覆盖率不高。 |
A random placement of large-scale sensor network in the outdoor environment often causes low coverage. |
45680 |
为此提出一种基于虚拟力(virtual force)扰动和布谷鸟搜索(CS, Cuckoo search)的移动传感器网络覆盖优化算法(VF-CS)。 |
An area coverage optimization algorithm of mobile sensor network (MSN) based on virtual force perturbation and Cuckoosearch (VF-CS) was proposed. |
45681 |
首先,对传感器节点进行 Voronoi 图划分,形成独立的泰森多边形(Thiessen polygon)。 |
Firstly, the virtual force of the sensor nodes within the Thiessen polygon was analyzed based on the partitioning of Voronoi diagram of the monitoring area. |
45682 |
其次,对泰森多边形内的节点进行虚拟力的分析,将多边形顶点和邻居节点的作用力作为布谷鸟搜索位置更新的扰动因子。 |
Secondly, the force of polygon vertices and neighbor nodes was taken as the perturbation factor for updating the node’s location of the Cuckoo search (CS). |
45683 |
最后,通过布谷鸟搜索引导节点移动实现覆盖优化。 |
Finally, the VF-CS guided the node to move so as to achieve the optimal coverage. |
45684 |
仿真实验结果表明,与以往基于 Voronoi 图的覆盖优化算法相比,VF-CS 算法提高了覆盖率,减少了节点平均移动距离。 |
The simulation results demonstrate that the proposed algorithm has higher coverage and shorter average moving distance of nodes than the Voronoi diagram based algorithms in literatures. |
45685 |
针对物联网多跳中继系统中密钥生成方法速率低的问题,提出一种基于网络编码的协作密钥生成方法。 |
The achievable key rate of secret key generation method in multi-hop relaying systems was relative low in Internet of things. A cooperative secret key generation algorithm based on network coding was proposed to improve the achievable key rate. |