并把这种方法用于三峡电站的入库径流预报中,取得了较好的效果。
The method is used for the runoff forecast of the Three Gorges Station, and the result is satisfactory.
其次论证了支持向量基(SVM)在径流预报中的应用可能性,提出了该方法的应用前景。
Secondly, it is demonstrated that the principle of SVM and its application prospect in runoff forecasting.
中期模型优化的时间跨度等于中期入库径流预报的预见期(3-7天),优化时段为一天。
The time span of middle-term optimization model equal foreseeable period of runoff forecasting (3 to 7 days), and the optimization period is one day.
简要介绍了人工神经网络用于洪水预报的基本原理,对降雨径流预报的网络模型进行了改进。
This article presents the principle of ANN briefly in the application of flood forecast and an improved network algorithm of rainfall runoff forecasting.
建立GM(1,1)灰色拓扑模型群,通过结论分析,表明该模型在年径流预报中为一种较为理想的方法。
Setting up GM(1,1) grey topological model groups and through analyzing conclusion, it indicates that such model is a kind of comparatively ideal method in predicting annual surface flow.
又小波网络较神经网络有更多的优点,通过比较,证实基于小波网络的非线性组合预测方法用于径流预报中更能提高预测的精度。
Compare to them, the result was that the nonlinear combinatorial forecasting method applying to the runoff forecasting based on the wavelet network can improve the forecast precision.
本文论述了黄河上游中长期径流预报专家系统ESRPUYR的结构、研制途径和非精确推理的算法,并给出具体实现的措施和技术。
This paper covers the structure of the system, the process of design and not-exact inference algorithm. Also, the methods and techniques of the system realization hav…
正确估计地下径流过程是水文计算和预报中的一项基础性工作。
How to compute groundwater runoff correctly is the basic re - search subject in hydrological calculation.
土壤蒸散发量的计算,在墒情预报、降雨径流计算及水资源评价中都占有重要的地位。
Calculation of quantity of soil evaporation takes an important part in moisture content prediction, rainfall surface flow calculation and evaluation of water resources.
这说明运用马尔可夫模型进行河径流量的丰枯状态预报是有效可行的。
So, it is practical to use the sequential clustering and Markov model to forecast the river runoff .
这对充分利用现有空间技术和空间数据进行降雨-径流模拟并改进水文预报方法提供了研究途径。
It provides approaches to make full use of available spatial technologies and data for rainfall-runoff modeling and technical improvement of hydrological forecast.
在水土流失研究中,坡面径流流速是径流计算、土壤侵蚀预报中不可缺少的水动力参数。
In the research of the soil erosion, the rate of slope runoff is an indispensable hydrodynamic parameter in the runoff computation and the soil erosion forecast.
通过运用于欧阳海水库入库径流量的实际预测表明,所建系统预测能力强,预报效果好,具有较高的推广和应用价值。
Results of actual prediction of the runoff into Ouyanghai Reservoir show that the system developed is highly effective in prediction and is worth popularization and application.
无资料流域水文预报(PUB)为国际水文十年计划的主题,其核心部分是无资料地区径流计算。
Predictions in Ungauged Basins(PUB) is the theme of International Hydrological Decade, the core of which is runoff calculation.
将偏最小二乘回归与神经网络耦合,建立了径流量预报模型。
Coupling partial least-squares regression and neural network in the article, the forecasting model of the quantity of runoff is established.
因此开展洪涝预报和渍害治理至为重要,而降雨径流计算是其首要解决的问题。
In view of the above mentioned facts, it is very important to develop flood forecasting and waterlogging harnessing. while rainfall-runoff calculation is the kernel to solve these problems.
提出了径流长期分级预报的人工神经网络方法,给出了多层前馈网络的联合梯度算法。
An artificial neural network method is proposed for hydrological forecasting, the hybrid gradient method for multilayer feedforward neural network developed.
在进行灰色拓扑理论探讨的基础上,选取新疆玛纳斯河年径流作为预报对象。
The annual surface flow in the Manas River of Xinjiang was chosen as object on the basis of discussion on the grey topological theory.
径流中长期预报一直以来都是人们关注的热点研究问题,常用的时间序列法、多元回归分析法等都存在预报精度偏差过大的问题。
There are many methods for medium- and long-term runoff forecasting, such as time series, multiple linear regression and so on, which often have deviation in forecasting precision.
现结合水文长期预报的特殊性,将关联规则挖掘分析方法应用于径流长期预报中。
On the other hand, the long-term forecast of annual maximum flood peak discharge has been researched with the period method combined with the stochastic method.
现结合水文长期预报的特殊性,将关联规则挖掘分析方法应用于径流长期预报中。
On the other hand, the long-term forecast of annual maximum flood peak discharge has been researched with the period method combined with the stochastic method.
应用推荐