Concept drift, as a difficult point in the field of data stream mining, is generated with the accompany of time-varying data streams.
概念漂移是数据流分类挖掘中的一个难点，它是伴随着数据流的时变性而产生的。
Finally, the researchers examined data from a nationwide Bureau of Labor Statistics survey on how people with varying household income levels spend their time.
最后，研究员调查了全国劳动统计局的一项统计数据，这是关于不同家庭收入水平的人如何支配他们的时间的统计。
The dynamic measurement is a non stationary random process varying with the measuring time. The dynamic measuring data have the characteristics of time variation, randomness, correlation and dynamic.
动态测量是随测量时间而变化的非平稳随机过程，动态测量数据具有时变性、随机性、相关性和动态性四个基本特性。
It is also an important work to study the varying tendency of the historic stream data ina data stream and predict the possible values of the stream data in the future time window.
研究数据流上的历史数据的变化趋势，并预测数据流在未来时间窗口内的可能值是数据流挖掘的一项重要工作。
At present, more comprehensive attention has been taken to OFDM technology in data transmitting systems with wireless time-varying channel.
目前，正交频分复用(OFDM)技术因能在无线时变信道中进行高速数据传输而受到广泛的关注。
It can overcome the effect of bad data on parameter estimation, and has strong robustness, and can track time-varying parameters because the discontinuous recursive computation was applied.
该方法由于采用了间断迭代，因此可以克服坏数据对参数估计的影响，且具有较强的鲁棒性，又可以跟踪时变参数。
The lung sounds data analysis USES time domain analysis, frequency domain analysis, power spectra analysis, time-varying spectra analysis and so on.
肺音分析采用了时域分析、功率谱分析、时变谱分析、同态处理等多种分析算法。
The dynamic data forecasting model of ground settlement is studied, a new prediction model of grey-time serial with time-varying parameters characters is proposed.
研究了隧洞施工中地表沉降动态预测模型，提出了时变参数灰色—时序动态预测模型，并建立了一种改进的时变灰色模型。
This paper uses time-varying parameter model and panel data model to analyze the effects of the active fiscal policy on total factor productivity of national economy and provincial economy in China.
利用时变参数模型和面板数据模型，可以对积极财政政策的全要素生产率增长效应进行分析。
On the basis of the nonlinear characteristics of ANN and 3-D FEM computation, an inversion method for the time-varying regularity of dam parameters is presented with the observation data used.
基于人工神经网络的非线性映射特性，在三维有限元计算的基础上，结合大坝原型观测资料，提出了大坝参数时变规律的反演方法。
In this context, it develops time-varying od demands models and algorithms of urban road network based on dual sources data.
在此背景下，本文提出了基于二源数据的城市路网动态od估计模型与算法。
Thus, there is a lack of effective application-oriented dispatching coordination models incorporating time-varying multiple sources of data.
在此背景下，本文提出了基于时变二源数据的城市公交调度协调模型和算法。
Data Warehouse is a collection of data which is subject-oriented, integrated, time-varying, non-volatile, primarily used in organizational decision making.
数据仓库是一个面向主题的、集成的、不可更新的且随时间不断变化的数据集合。
Data Warehouse is a collection of data which is subject-oriented, integrated, time-varying, non-volatile, primarily used in organizational decision making.
数据仓库是一个面向主题的、集成的、不可更新的且随时间不断变化的数据集合。
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