Some data access modes are proposed, specially for real-time traffic flow data and spatial data.
在此基础上着重提出了针对实时交通流和空间数据的存取方式。
Road traffic flow data collection system is an important component of ITS, and is the basis of other application of intelligent transportation system.
道路交通动态信息采集系统既是ITS的重要组成部分,又是ITS其它应用系统建设的基础。
In this paper, an analytic and predicting model for urban region traffic flow status is presented by using several data mining technologies.
本文运用计算机科学领域中的数据挖掘技术,提出了一个城市区域交通流分析预测模型。
This thesis illustrates examples of the methods on structure analysis of traffic flow data based on Vehicle License Plate Recognization with OLAP technology and its application prospect.
文章结合实例,阐述了运用OLAP技术对基于车牌识别的交通流数据进行结构分析的方法及应用展望。
Along with the wide application of the Urban traffic control (UTC) system, traffic control center can collect a mass of traffic flow data.
随着城市各种交通控制系统(utc)的广泛应用,交通控制中心能够采集大量的交通流数据。
By using the basic method of noise measurement, traffic noise values were measured, and different types of vehicle flow data were gained in a certain section of the Southwest Road in Dalian.
运用噪声测量基本方法,测量了大连市西南路某路段交通噪声值并统计出不同类型的机动车流量数据。
Then, the BP neural network is trained by using traffic flow data from a section of freeway and the network model parameters can be obtained.
并利用一段高速公路的交通流数据对BP神经网络进行训练,得到网络参数。
This paper aims to realize the program design on the single-source traffic flow data quality control algorithm based on the value-calculation theory.
针对基于数值计算理论的单源交通流数据质量控制算法作程序实现。
Secondly, under the guidance of data mining, make a detailed software design of traffic flow forecasting system.
其次,以数据挖掘技术为指导思想,对交通流预测系统进行详细的软件设计。
Traffic flow data platform; Filtration; Repair; "High-frequency vehicles"; "Load Quantities".
交通流数据平台;过滤;补偿;“高频车辆”;“负载保有量”。
Meanwhile, it described the mathematical relationship of fractal traffic flow with mathematics method, set up corresponding mathematics model, and proved the model was correct with some data.
同时,用数学方法描述了交叉路口分形交通流的数学关系,建立了相应的数学模型,并通过哈尔滨市某信号控制交叉口的实测数据验证了该模型的正确性。
The processing of traffic flow data provides reliable data for the service evaluation of road network, optimum path calculation and vehicle navigation.
交通流数据处理为路网服务水平的评价、最佳路径计算等提供可靠的数据。
Verifying quality of traffic flow data is to ensure the correctness and completeness of the data obtained from the data sources, providing reliable data for the data management and application.
交通流数据质量检验可以保证从数据源所获得数据的正确性和完整性,为数据的管理和应用提供了可靠的数据基础。
At last, the traffic flow forecasting data were obtained by an inverse transform.
最后将其转换为交通流量数据,得到预测结果。
Wavelet transform is introduced into traffic flow data preprocessing to enhance data accuracy. And the BP neural network predicts the future traffic flow velocity using the historical data.
在数据预处理中引入小波变换对交通流数据进行消噪处理,以提高数据的准确度。
The model for filling time series data of traffic flow based on LS-SVM is proposed in this paper, missing data can be filled by using traffic flow historical data.
利用实例仿真验证表明,LS-SVM具有较好的泛化能力和很强的鲁棒性,采用基于LS-SVM的交通流时间序列模型补齐丢失数据能够取得很好的效果。
The results indicate that there is chaos in the real traffic flow and the improved surrogate-data technique can identify chaos exactly.
实证结果表明,我们实测的交通流中存在混沌,改进型的替代数据法能对其进行准确判别。
Collecting the exact and complete traffic information is the basic ensure of finishing intelligent traffic. Besides, the veracity of data samples decides the veracity of predicting traffic flow.
全面、准确的采集交通信息是实现交通智能化的基本保障,交通流量预测的准确性也取决于数据样本的准确性。
By analyzing packets of the transport layer and the traffic characteristic in the P2P system, TLI can identify whether or not the network data flow belongs to the P2P system.
TLI通过对传输层数据包进行分析并结合P 2 P系统所表现出来的流量特征,来识别某个网络流是否属于P 2 P。
Results of the test using field data show that the spline fitting can make a better compromise of best fitting and smoothness, and the algorithm performs better in short-term traffic flow forecasting.
经过实测数据仿真试验表明,样条拟合能较好地兼顾最优拟合与曲线光滑度的选择,算法的预测效果良好。
Traffic monitoring plays an important role in intelligent transportation systems. It can be used to collect real time traffic data concerning traffic flow.
交通监视系统通过采集实时交通流量数据,为智能化交通运输服务和控制管理提供依据,在智能交通系统中有着极其重要的作用。
The highest density of traffic flow from line regression of its statistic data is in the area of factual data.
对统计数据进行线性回归后得到的最高密度处在实测范围内。
In this paper, how to forecast the traffic flow oft he road by using the known information especially the statistical data in the statistical Yearbook when od survey is impossible is introduced.
主要解决如何实现在无现状调查OD的情况下,充分利用已知信息,特别是《统计年鉴》中的统计数据,预测路段交通量。
Road traffic noise in a sample housing estate was assessed using prediction method and based on collected traffic flow and vehicle type data.
根据实测所得交通流量和车型分布,采用预测为主、实测为辅的方法对典型居住小区进行了交通噪声预测与评价。
Finally, the problems of how to pick out outliers from the traffic data and how to forecast traffic flow are discussed.
最后介绍了如何找出话务数据中的野值点和如何预测话务量。
The Verifying Quality of Traffic Flow Data is to ensure the completeness and accuracy of the data obtained from the data source, and provides reliable data for the data management and application.
交通流数据质量检验可以保证从数据源所获得数据的正确性和完整性,并为数据的管理和应用提供可靠的数据基础。
Missing values in traffic flow data should be imputed because complete data are needed for space-time data mining.
交通流量的时空数据挖掘需要完整的数据,因此必须处理交通流量数据中的缺失值。
Using the 3D programme of simulation made by us, we could simulate real microcosmic traffic flow phenomena on virtual road based on real road data. It has laid the foundation to for…
研制出的仿真系统能模拟真实道路微观交通流现象,为进一步开发交通控制和规划仿真软件打下了基础,该仿真平台也丰富了我校自行研制的驾驶模拟器的功能。
It provides theory and data basis for research on the characteristic of traffic flow under ice and snowfall conditions.
为冰雪条件下城市道路交通流特性研究提供理论及数据基础。
It provides theory and data basis for research on the characteristic of traffic flow under ice and snowfall conditions.
为冰雪条件下城市道路交通流特性研究提供理论及数据基础。
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