There are three main methods of cost estimation: expert method, analog method and parameters model method.
成本估算主要有三种方法：专家判定法、类比法、参数模型法。
The method is used when the model is complex and nonlinear (that is, parameters do not co-vary in a linear manner), or when the model involves more than just two or three uncertain parameters.
当模型复杂且非线性时（换句话说，在线性方式下参数不共变），或者当模型涉及多于两三个不确定参数时，使用该方法。
In this paper, the theory and method of fuzzy time series analysis are presented, the model form and the parameters estimate problem are studied.
本文提出了模糊时间序列分析的理论和方法，研究了模型形式及其参数估计问题。
In this paper, we introduce the camera model calibration algorithms and adopt a method of moving a single camera to calibrate parameters of traffic monitoring system.
本文研究了摄像机模型的标定方法，采用了通过一台摄像机平行移动来模拟两个摄像机的标定方法，达到标定系统参数的目的。
The model parameters of controlled objects were obtained with relay feedback identification method.
通过继电反馈辨识方法获得被控对象模型参数。
A stitching mathematics model was established, and method of solving parameters, precision evaluation criterion were provided.
给出了其拼接数学模型、参量求解方法及其精度评定判据。
Using parameter model to describe the radar signals reflective from targets and then the model parameters are estimated by means of ML method.
首先用参数模型来描述雷达探测信号，然后用最大似然(ml)法对模型参数进行估计。
It introduces the multi-objected optimization model of the metal milling process parameters and applies the goal attainment method to ask for the explanation for the model.
方法引入了金属铣削加工参数多目标优化模型，应用目标达到法对模型求解，又基于神经网络建立了金属铣削参数自动获取模型。
A greenhouse environmental dynamic model was an effective method to study the energy saving, the structure improvement as well as the parameters control of the greenhouse.
温室环境动态模型是研究温室节能、结构改进及其参数控制的有效方法。
The parameters of error model were identified by the least square method.
采用最小二乘辨识方法，得到感应同步器测角误差模型的系数。
As the nonlinearity, time-varying parameters and large lag make the control difficult, a predictive functional control method based on T-S (Takagi-Sugeno) fuzzy model is presented.
针对其存在非线性、参数时变和大延迟等难以控制的特性，提出基于T - S模糊模型的预测函数控制新方法。
Comparing with the least squares method, the advantage of this approach in that the influence of non-integer harmonic errors on the estimate of model parameters has been effectively restricted.
与经典的最小二乘法相比，共优点是能有效地抑制非整次谐波误差对模型参数估计的影响。
This paper describes a method for calculating reverse recovery current parameters of the thyristor turnoff model.
本文论述了计算晶闸管关断模型反向恢复电流参数的一种方法。
A calculation method of contact problem of plastic gears based on three parameters model of viscoelasticity material is presented.
本文在粘弹性材料三参数模型的基础上建立了塑料齿轮接触问题的计算方法。
Parametric design is a modeling method. It uses important geometric parameters to construct and modify geometric model.
参数化设计是一种使用重要几何参数快速构造和修改几何模型的造型方法。
The model parameters are estimated by the optimal method of nonlinear programming, and the equivalent mixing coefficient is regressed in a dimensionless equation.
模型参数用非线性规划的最优化方法进行估计，得到了计算液相当量混合系数的无因次回归方程。
This paper presents a synthesized model updating method using the modal parameters and frequency response functions(FRF) extracted from the vibration test data.
文章提出了一种利用模态参数和由振动试验数据求得的频响函数来进行模型修正的方法。
A method that measuring angular displacement error, identifying parameters of error model and compensating error automatically was put forward based on inductosyn angular measuring system.
针对感应同步器测角系统，提出了一种自动检测测角误差、辨识误差模型系数和补偿误差的方法。
The parameters for the MOSFET DC model are extracted by the L-Malgorithm in the optimization method.
本文采用最优化方法中的L - M方法，对MOSFET直流模型参数进行优化提取。
By using improved simplex method and residuals method, a calculation based on the parameters of compartment model of pharmacokinetics is presented.
基于改进的单纯形算法和残数法，对药物动力学房室模型中的有关参数计算进行了研究。
The principle and method for fitting and estimation of constitutive equation model parameters are discussed.
分析了用曲线拟合估计粘弹性材料线性本构方程模型参数的原理和方法。
To solve the problem of ellipse - object - shape parameters detection in noise image, a new detection algorithm using nonlinear data fitting model and cross-reference iterative method is proposed.
为提高噪声环境下椭圆类物体形状检测算法的稳定性与准确性，本文提出非线性数据拟合模型结合交叉参考迭代的新思路。
In this method, the dynamic model parameters of accelerometer are optimized by genetic neural network according to measurement data of the dynamic calibration.
该方法利用加速度传感器的动态标定数据，采用遗传神经网络搜索和优化动态模型参数。
To analyze the variation of the parameters of the soil, the mechanical model and numerical method of the explosion compacting the cushion and soil are established.
为了分析爆炸挤压后土体参数的变化规律，建立了爆炸挤压垫层和粘土的力学模型及数值方法。
System parameters were identified by adapting recursion least square method, and the forgetting factor was introduced to improve the model tracing ability of TCS.
利用递推最小二乘法进行了系统系数辨识，并引入遗忘因子以提高TCS的模型跟踪性能。
The given method may be applied to identify parameters in complex finite element model.
本文方法可用于复杂有限元模型中的参数辨识。
The type of panel data model, estimation of parameters and choose method of model will be analyzed.
分析了面板数据模型的类型、参数估计和模型选择方法；
This paper presents the principle of fix-gain filter to airborne radar servo system, the model of realizing, and the method of selecting parameters of the model.
介绍了应用在机载雷达伺服系统中的常增益滤波法的原理，以及实现模型和算法参数的选择方法。
This paper presents the principle of fix-gain filter to airborne radar servo system, the model of realizing, and the method of selecting parameters of the model.
介绍了应用在机载雷达伺服系统中的常增益滤波法的原理，以及实现模型和算法参数的选择方法。
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