In fact , the model calibration is a function optimization problem , which searches the best or better parameter values in their acceptable ranges to attain a match between the observed and simulated distribution or distributions of a dependent variable or variables 在模型参数物理意义的范围内,使模拟结果与实际观测值之间误差最小的参数估计问题本质上属于函数优化的研究范畴,是一个仿真优化问题。
The series of point group calculated by this algorithm theory is strictly descending and converging to the stable polar point . this theory is very efficiency in solving the problem of lad for its simplicity 、 rapid speed and high adaptability 本文算法所产生的点组序列是严格下降并收敛于稳定极点的,我们的计算表明,本算法对求解超定最小一乘估计问题非常有效,具有算法简单、速度快、适应性强的特点。
In this paper we mainly discuss the problem about minimum variance estimation for linear model and bring out the relevance and difference of performance between the two methods in order to provide theoretic foundation for choosing appropriate estimation method 本文针对这种线性(观测)模型下的最小方差估计问题进行了深入讨论,指出这两种估计性能之间的关系及差别,从而为选择恰当的估计方法提供理论依据。
估计: estimate; evaluate; take sto ...问题: question; problem回归估计问题: regression estimation problem会计问题: accounting problem设计问题法: project problem method生计问题: a bread and butter issue; bread-and butter issue; bread-and-butter issue统计问题: statistic problem; statistical problem程序设计问题: programming problem当代设计问题: contemporary design issues管理会计问题: management accounting problems景观设计问题: res.issues for land. arch网络设计问题: ndnetwork design problem系统设计问题: system design problem总合问题, 集计问题: aggregation problem第四部分 设计问题: design issues建筑设计问题1: architectural design problems建筑设计问题2: architectural design problems ii自动程序设计问题: automatic programming problem钢铁统计问题工作队: working party on steel statistics关于董事报告的审计问题: auditconsiderationsrelatingtothedirector'sreport国外业务的管理会计问题: management accounting problems in foreign operations解决施工期间的任何设计问题: resolve any desigh problems during the construction phase人口普查和调查中残疾统计问题国际训练讲: international training workshoon disability statistics in censuses and surveys最近联合国主要会议所涉统计问题专家组: expert grouon the statistical implications of recent major united nations conferences估计: estimate; evaluate; take stock of; size up; calculate; appraise; reckon; estimation; forecast 大致估计 rude estimates; 非常乐观的估计 a very optimistic estimate; 照我的估计 by my reckoning; 据保守的估计 on [at] a conservative estimate; 我估计那项损失达8,000元。 i estimate the damage at 8,000 yuan. 你把卸货所需的时间估计进去了吗? did you reckon in the time needed for unloading the cargo?; 估计不足 underestimation; underrating; 估计成本 estimated cost; 估计纯利 estimated net profit; 估计风险 calculated risk; 估计费用 estimated cost; pro forma cost; 估计过低 underrating; undervaluation; 估计过高 over-estimate; 估计理论 estimation theory; 估计量 [数学] estimator; estimate; 估计失误 make a mistake in judgment; 估计时间 estimated time; 估计市场 estimated market value; 估计寿命 life expectancy; 估计误差 evaluated error; error of estimation; 估计值 estimated value; 估计资本 estimated capital