查询词典 error model

In fuzzy division of input space of the model, the division references consider not only the space distance of input sample data, but also the rule output error, thus defining"generalized sample distance", which makes model structure better.

在模型输入空间的模糊划分中，不单只考虑输入样本数据的"空间距离"，同时将规则输出误差作为输入空间划分的另一依据，由此定义"广义样本距离"，使模型结构更加合理。

Now the triangular mesh model simplification algorithm based on edge collapse is very complex.Combining Garland's quadric error metrics algorithm and Hoppe's progressive mesh algorithm,a new algorithm for triangular mesh dynamic model simplification based on cost function is proposed in this paper.

目前基于边折叠的三角网格模型简化算法边折叠计算复杂，没有有效进行动态简化，结合Garland的二次误差度量算法和Hoppe的累进网格算法，提出了基于代价函数的三角网格模型动态简化算法。

In application of Guanyinge-Shengwo cascadereservoir, the results show that the model parameters of interval flood concentration andchannel progression model should be calibrated simultaneously, so that the negative value,indention shape and their error occurred in back-analysis interval concentration process ofcasacade reservoir could be avoided reasonably.

在观音阁—葠窝水库的应用结果表明，对反推梯级水库区间汇流过程存在的负值、锯齿状和误差等问题，可采用区间洪水汇流和河道演进模型参数统一率定的方法解决。

The effects of the initial values and the network approximation error using neural network model composed of feedforward neural net and delayed output feedback in the approximation of NARMAX system are studied, and a conclusion is drawn that under some weak conditions the output of the network model has little difference from that of the actual system.

研究了用带有延迟环节的前馈网组成的网络模型逼近NARMAX系统时网络逼近误差及运行初始误差对网络模型输出的影响，指出在一些弱的条件下网络模型输出与实际系统输出间相差不大。

This paper collects the data which reflect the population structure and per capita GDP of China from 1978 to 2006, utilizes the econometric analysis method of Johansen cointegration test and vector error correction model, combines the current condition and the result of the model, analyzes the effects of China's population structure on the economic growth and puts forward some suggestions.

郑娜(杭州电子科技大学，浙江杭州310018)摘要：本文搜集了我国1978-2006年的人口结构和人均GDP数据，利用Johansen协整检验和向量误差修正模型的计量经济方法，结合现实情况和模型的结果，分析了我国人口结构对经济增长的影响并提出相关建议。

The nonlinearity and discrete gradient inherited in CAViaR model is a conundrum for parameter estimation. We take the asymmetric Laplace distribution with scale parameter as the error process; indicate the variance has a minimum positive value when the scale parameter is a constant, conflicting with the distribution of real financial data. Further we estimate the parameters of indirect TARCH-CAViaR model base on Bayesian framework and Markov chain Monte Carlo method. The optimal scale parameter can also be obtained by Markov chain Monte Carlo method.

CAViaR一般模型中递归分位回归方程的非线性和非连续可微性是参数估计的一个难题，基于含有尺度参数的不对称拉普拉斯分布作为误差过程，指出将尺度参数固定为常数会导致不对称拉普拉斯分布随机变量的方差存在最小正值的限制，与实际金融数据分布不符；进而提出采用贝叶斯分析和马尔科夫链蒙特卡罗模拟方法，估计间接TARCH-CAViaR模型的参数，并可获得尺度参数的合理估计。

The substitution model of RBF neural network was made respectively by 3 different test functions. The error analyses indicate that the fractional steps experiment design method is very practical for the substitution model needed large scale test sample points.

对3个测试函数建立RBF神经网络替代模型，其误差分析表明，分步试验设计方法对于需要大规模试验样本点的替代模型是非常实用的。

Owing to the test of fatigue life,possesses a rather big difficulty and its testing data have the characteristics of strong scatterence and if a prediction is made from using grey-forecasting model GM(1,1,thus its prediction value would get a rather big error compared with the real result,This paper hereby put forward a kind of new method to simulate the test.let the data be firstly processed into logarithmic series so as to reduce the scatterence of data,and then carry out the prediction by the use of grey-forecasting model.

由于疲劳寿命试验具有难度较大，其实验数据具有分散性强的特点，如果直接用灰色预测模型（GM（1，1））作预测，其预测值与真实结果的误差较大。在此提出一种试验仿真的新方法。首先将数据处理成对数序列，以降低其数据分散性；然后再用灰色预测模型进行预测。

This paper firstly established a general mathematical model for the approximation to gradient and suggested two optimization principles of the approximation model,and then developed two optimal algorithms to reach minimum anisotropy or minimum approximation error while...

提出了通用梯度近似算法的数学模型和两种优化准则，进而推导出两种梯度近似的优化算法。

The effect of the magnetic interference on the output of magnetic compass was analyzed and a ellipse model for the compass deviation was established. By analysis on the singularity of a coefficient matrix, the error coefficients of the ellipse model were identified by the least square ellipse fitting method.

分析了外界磁干扰对磁罗盘输出的影响，建立了罗差的椭圆模型，通过对系数矩阵的奇异性进行分析，采用最小二乘方法实现了对椭圆模型误差系数的辨识。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。