查询词典 forecasting theory

In the procedure of researching and developing project, brings forward the method of fast establishing new project based on template file; develops the module used for forecasting movement and deformation of multiple random-shape faces according to probability integral principle; according to the traits of forecasted data, puts forward a new algorithm of drawing isoclines in Maplnfo environment; designs the new algorithm of drawing section plane and the new calculation of area and volume of subsided section based on isoclines; at the same time, gives the rale of classifying mine surface damage under GIS environment on the basis of GIS uncertainty theory.

在课题的研制过程中，提出了以模板文件形式快速建立新项目的方法；运用概率积分法编写了任意形状多工作面开采沉陷地表移动与变形预计模块；根据预计数据的特点，基于MapInfo设计了等值线新的绘制算法；基于等值线设计了新的剖面图绘制算法和塌陷区面积、体积的计算方法；并结合GIS不确定性理论提出了GIS图形环境下矿区地表塌陷破坏等级划分准则。

Combined chaos theory with Neural network, it presents predisposal technology in data-disposal of phase space, compares it with others, its convergent speed and forecasting precision have been improved greatly.

将混沌理论与神经元网络结合起来，首次提出了在相空间中进行数据预处理的神经网络训练样本预处理技术，该技术通过与其他预处理技术的比较，其网络收敛速度与预测精度有较大提高。

According to the characteristics presented by armed helicopters during cruising or searching for ground targets, this paper has established the mean-square deviation stationary random model of helicopter tracks. It is an important method to decorrelate the measure noise by estimating the parameters of the color noise online. Kalman filtering and forecasting have been made with helicopter tracks. The simulated study has been carried out on helicopter tracks under the condition of color noise. It is very difficult to get an accurate and reliable prediction when the data is very limited. The paper make use of the theory of grey system to resolve the problem of prediction of helicopter tracks, establishing the GM model of grey systems and the cumulative residual error model of n degree, then correcting the GM forecast model. In the period of sampling, GM model and residual error model have been established on line to improve prediction precision.

结合武装直升机在巡航或搜索地面目标的特点，给出直升机航迹模型为协方差平稳随机模型，在线估计有色噪声参数，对测量噪声去相关，对直升机航迹进行卡尔曼滤波与预估，最后对有色噪声条件下的航迹进行了仿真研究；在数据非常有限的情况下，准确地预测又很困难，本文提出了用灰色系统理论解决直升机航迹预测问题，建立了灰色系统GM预测模型和n次累加残差模型并对GM预测模型进行修正，在每个采样期间内，实时在线建立GM预测模型和残差模型以提高预测精度。

The main usefulness of the tourist area life cycle is to seek common regular issue on space trend of tourist development. It is not a long time for the theory coming into being. It contributes to describing and forecasting the developing track of tourist area and to guidance the plan.

旅游地生命周期理论的主要作用在于探寻旅游地空间发展趋势方面的一般规律性问题，它的产生时间不长，作为一条理论所具有的贡献有：描述、预测旅游地的发展轨迹，以及对规划的指导作用。

The throughput forecasting of thin-film evaporator is quite difficult and the precision is quite low because of high complexity of the process.By the Rosetta data analysis saddlebag based on the Rough set theory,the total process of knowledge discovery in databases was accomplished including data preparing,data analysis and the interpreting of the results.

Rough集理论[1-3]自1982年由波兰数学家Pawlak Z教授提出以来，经过20多年的研究和发展，在系统理论、计算机模型的建立和应用系统的研制开发上，已经取得了许多成果，也建立了一套完整的Rough集理论体系，特别是由于上世纪80年代末和90年代初在知识发现等领域得到成功的应用而受到国际上广泛关注。

Soil water dynamic forecasting model of winter wheat and summer corn was established with the theory of soil water balance after the soil water variation was analyzed.

在分析土壤湿度变化规律的基础上，根据土壤水分平衡方程，建立了河南省冬小麦、夏玉米土壤水分动态预报模型。

This paper presents the basic theory of the time series analysis, at the same time introduced the use of time-series modeling and forecasting methods in predicting the Ministry of Public Security and its database of crime trends in the application.

本文主要介绍了时间序列分析的基本理论，同时介绍了使用时间序列进行预测和建模的方法及其在预测公安部数据库中犯罪事件趋势上的应用。

Based on wavelet transformation and chaos theory, this paper presents a condition forecasting method for complex systems.

应用小波变换和混沌理论对复杂系统状态预测方法进行了研究。

Based on wavelet packet transformation and chaos theory, the research on forecasting method of complex system condition is made.

基于小波包变换和混沌理论对复杂系统状态预测方法进行了研究。

According to Duhamei theory and method of binominal calculating productivity and combing with production of gas well, bore hole pressure is suggested so that a forecasting model for testing pr.

在Gringarten等人提出无限导流垂直裂缝模型解的基础上，通过对产生的裂缝进行微元段划分，结合均匀流率垂直裂缝模型，得出了裂缝微元段数为200时的井底不稳定流动压力的半解析解，根据杜哈美原理和二项式计算产能的方法，结合气井生产，提出拟合井底压力的方法，得到一种专门针对无限导流垂直裂缝模型的多产量测试产能预测模型。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。