查询词典 trial-and-error method

In order to make the new recursive method convergence fast, the RLS-like forgetting factor is introduced to construct the new data Hankel matrices. In the framework of subspace methods, the gradient type subspace tracking method is used to implement the update of the state subspace, which results the unbiased estimate. Different from traditional offline method, the system matrices are recursively computed using RLS method. The convergence analysis of the proposed method is given and finally, the efficiency of this method is illustrated with a simulation example.A new closed-loop identification method is proposed to implement consistency estimation of closed-loop subspace identification.

引入RLS-like遗忘因子机制构造新的数据矩阵，更好地跟踪系统时变信息，提高递推算法的收敛速度；在子空间辨识框架内，采用梯度型子空间跟踪算法实现对状态子空间的更新，避免了子空间近似带来的估计有偏性；与传统的离线算法不同，在得到系统状态子空间后，基于递推最小二乘方法提出新的算法，实现对系统矩阵的递推估计；并给出递推子空间辨识算法的收敛性分析；最后通过仿真实例验证算法的有效性。

Finishing calculation of mean value, standard deviation, skewness, kurtosis of Beta distribution.(2) Fitting parameters of many kinds of typical distribution and using residual deviation to evaluate fitting precision.(3) Using Beta distribution as an agreed indication distribution applied to many kinds of practical photoelectric measurement distributions.(4) Deriving theory formula of Bayes point estimation about Beta distribution parameters and mean value and standard deviation on the condition of mean square error loss function and supposed the prior distribution is uniform distribution.(5) Generating MCMC sample from post distribution by the method of Gibbs sample algorithm. Calculating bayes point estimation from sample on the condition of mean square error loss function. Calculating confidence interval by an approximate method to complete interval estimation.

本文的主要工作有：(1)解决了Beta分布参数a和b的精确计算以及均值、标准差、偏度、峰度的计算问题；(2)拟合出10余种典型分布的Beta分布的两个参数，并且采用剩余标准差评价该Beta分布的拟合精度；(3)对多种典型的光学与光电测量系统的测量分布进行了Beta分布统示表示；(4)在假设先验分布为均匀分布前提下，得到参数a和b以及均值μ和标准差σ在均方误差损失函数下的贝叶斯点估计理论计算公式；(5)利用直接抽样的Gibbs抽样算法，从后验分布中产生MCMC样本，从样本直接计算均方误差损失函数下的贝叶斯点估计，并使用一种近似方法计算其置信区间，完成区间估计。

In this method we considerately consider the non-linear distortion of the scene and system error in the camera model, and introduce the non-linear distortion of the lens and system error into the direct-linear calibration algorithm, and quickly realize the camera calibration through a simple linear iterative method.

该方法在摄像机模型中全面考虑了镜头的非线性畸变和系统误差，在直接线性标定法中引入了处理镜头非线性畸变和系统误差的因子，通过简单的迭代求解实现了对摄像机的快速定标。

This study thoroughly inspects reciprocal method and leap-frog method of EDM trigonometric leveling along with relationship between EDM height, ellipsoid height, and orthometric height. An experimental area with 200m, 400m and 600m span intervals were set up with vertical angle error ±1.5〞and EDM error ±（2mm+2×10-6×Smm）.

本研究规划实验区实地针对200m、400m、600m三种测段长，采用之全测站仪之垂直角中误差为±1.5〞，测距中误差为±（2mm+2×10-6×Smm），进行EDM三角高程测量，并对测量方法及观测成果精度进行分析，实际探讨短距离EDM三角高程代替水准测量的可能性。

Well, by and by the king he gets up and comes forward a little, and works himself up and slobbers out a speech, all full of tears and flapdoodle about its being a sore trial for him and his poor brother to lose the diseased, and to miss seeing diseased alive after the long journey of four thousand mile, but it's a trial that's sweetened and sanctified to us by this dear sympathy and these holy tears, and so he thanks them out of his heart and out of his brother's heart, because out of their mouths they can't, words being too weak and cold, and all that kind of rot and slush, till it was just sickening; and then he blubbers out a pious goody-goody Amen, and turns himself loose and goes to crying fit to bust.

随后国王站了起来，朝前走了几步，酝酿好了情绪，哭哭啼啼作了一番演说，一边眼泪直流，一边胡话连篇，说他和他那可怜的兄弟，从四千英里外，仆仆风尘赶到这里，却失掉了亲人，连最后一面也未见到，心里有多难过，只是由于大伙儿的亲切慰问和神圣的眼泪，这样的伤心事也就加上了一种甜蜜的滋味，变成了一件庄严的事，他和他兄弟从心底里感谢他们。因为嘴里说出的话无法表达心意，语言委实太无力、太冷淡了。如此等等的一类废话，听了叫人要吐。最后胡诌了几声"阿门"，又放开嗓子大哭一场，哭得死去活来。

Well, by and by the king he gets up and comes forward a little, and works himself up and slobbers out a speech, all full of tears and flapdoodle about its being a sore trial for him and his poor brother to lose the diseased, and to miss seeing diseased alive after the long journey of four thousand mile, but it's a trial that's sweetened and sanctified to us by this dear sympathy and these holy tears, and so he thanks them out of his heart and out of his brother's heart, because out of their mouths they can't, words being too weak and cold, and all that kind of rot and slush, till it was just sickening; and then he blubbers out a pious goody-goody Amen, and turns himself loose and goes to crying fit to bust.

随后国王站了起来，朝前走了几步，酝酿好了情绪，哭哭啼啼作了一番演说，一边眼泪直流，一边胡话连篇，说他和他那可怜的兄弟，从四千英里外，仆仆风尘赶到这里，却失掉了亲人，连最后一面也未见到，心里有多难过，只是由于大伙儿的亲切慰问和神圣的眼泪，这样的伤心事也就加上了一种甜蜜的滋味，变成了一件庄严的事，他和他兄弟从心底里感谢他们。因为嘴里说出的话无法表达心意，语言委实太无力、太冷淡了。如此等等的一类废话，听了叫人要吐。最后胡诌了几声&阿门&，又放开嗓子大哭一场，哭得死去活来。

Well, by and by the king he gets up and comes forward a little, and works himself up and slobbers out a speech, all full of tears and flapdoodle about its being a sore trial for him and his poor brother to lose the diseased, and to miss seeing diseased alive after the long journey of four thousand mile, but it's a trial that's sweetened and sanctified to us by this dear sympathy and these holy tears, and so he thanks them out of his heart and out of his brother's heart, because out of their mouths they can't, words being too weak and cold, and all that kind of rot and slush, till it was just sickening; and then he blubbers out a pious goody-goody Amen, and turns himself loose and goes to crying fit to bust.

随后国王站了起来，朝前走了几步，酝酿好了情绪，哭哭啼啼作了一番演说，一边眼泪直流，一边胡话连篇，说他和他那可怜的兄弟，从四千英里外，仆仆风尘赶到这里，却失掉了亲人，连最后一面也未见到，心里有多难过，只是由于大伙儿的亲切慰问和神圣的眼泪，这样的伤心事也就加上了一种甜蜜的滋味，变成了一件庄严的事，他和他兄弟从心底里感谢他们。

Comprehensively making use of the basic theory, such as Space Analytic Geometry, Gear Meshing Engagement Theory, Method of Mathematical Calculation, Theory for Error Analyzing and Data Processing, the author has established the mathematical models of the new method, which has included the analytic mathematical model for precision orientation, the mathematical model for the ball's diameter and the measuring diameter, the mathematical model about the ball's centre, the calculation model for tooth alignment diviations and the model for tooth alignment error evaluation.

本文综合应用空间解析几何学、啮合原理、计算方法、误差理论与数据处理等有关基础理论，推导建立了新方法的数学模型，包括：确定定位关系的解析法数学模型，测球直径与测量半径的数学模型，测球球心的数学模型，齿向偏差的计算模型以及齿向误差的评定数学模型等。

The imprecise polynomial circuit optimization is based on arithmetic transformation method, considering the fixed point and floating point representation condition first, then give a realization of circuits under different accuracy boundary, trade off error with power dissipation and area, applying branch and bound method to find the solution with minimal cost, determine the minimal word length which satisfies the error bound, make use of the automation synthesis approach to get ultimate optimize structure at the same time.

非精确多项式电路优化基于算术变换方法，首先考虑电路的定点和浮点表示情况，给出电路在不同精度界限下的实现，进行误差和功耗、面积的权衡，然后应用分枝定界方法求解出最小代价电路，决定满足误差要求的最小字长，同时利用自动综合优化方法得到最终的优化结构。

In order to present the strategy that satisfy risk requirement, this paper presents a new method to bid block electric quantity and price. The method analyses MCP forecasted error at first, and then calculate its probability distribution. At last, the VaRs of error under different confidence are obtained, which could guide IPP to submit block electric quantity and price.

为了制定满足风险要求的这一策略，从发电企业的角度出发，通过分析历史预测出清价的误差，统计其概率分布，最后得到误差在不同置信度下的VaR值，并且通过VaR值来指导发电企业进行段电量和段电价的申报。

There are two types of gold deposits in this area, namely altered rock type and quartz vein type.

本区金矿床包括两种类型：柴胡栏子金矿床为蚀变岩型金矿；莲花山和红花沟金矿床属石英脉型。

You were home and it was two weeks ago.

你回到了家里。当时是两周前。