查询词典 piecewise linear function

Aimed at some shortages in the existing methods based on piecewise polynomial representation, such as sensitive to noise awl lower computational efficiency, a robust method of optimal segmenting time series is proposed.

针对分段多项式回归方法存在计算效率低和对噪声较敏感等缺点，提出了具有稳健性的最优分割方法，以解决时间序列数据相似搜索及知识发现处理中的长时间序列分割问题。

In the computational methods of TPBVP, in order to reduce some difficulties involved in solving a TPBVP via adjoint variables, we discuss a direct method in which state and control variables are indirectly parameterized, The method employs a recently developed direct optimization technique that uses a piecewise polynomial representation for the state and control variables, thus converting the optimal control problem into a nonlinear programming problem, which can be solved numerically.

在数值解法中，为了减少解决两点边值问题共轭变量带来的困难，主要讨论了将状态变量和控制变量进行参数化的一种直接方法，这种方法采用了近段发展起来的使用分段的多项式来代替状态和控制变量的直接优化方法，然后最优控制问题就转化成可以用数值方法解决的非线性规划问题，使得迭代初值更加容易选取。

In view of these disadvantages in the FEM model for the tire geometry, however, a new piecewise Ritz procedure is developed and presented in this dissertation for semi-analytical study of the contact problem of tire and road interaction.

针对现有的轮胎分析模型的计算量大并且不够精确的不足以及轮胎的几何结构和它的特点，本文发展了分片Ritz法进行轮胎／路面的接触问题分析。

To solve the problem of calibration transfer in multivariate calibration of chemometrics,Procrustes analysis algorithm and piecewise direct standardization algorithm are applied.

采用普鲁克分析算法和分段直接校正算法，解决化学计量学多元校正中的模型传递问题。

We propose a scheme to improve the local complexity of the chaotic stream cipher based on piecewise quadratic equation map.

在"分段二次非线性映射"的基础上，我们提出了非线性耦合反馈的改进方案。

A new algorithm is presented in this paper for piecewise quadric B-splines curve reconstruction from scattered data in a plane.

基于控制顶点扰动的思想提出了一种新的曲线重构算法，用于构造一条分段二次B样条曲线来逼近平面上的散乱数据点。

Piecewise deterministic Markov processes have important application in risk theory, especially the theory of martingal on the basis of PDMP has offered the method to stylize for studying risk theory.

逐段决定马尔可夫过程在风险理论中具有重要的应用，特别是基于逐段决定马尔可夫过程的鞅理论为研究风险理论提供了程式化的方法。

When nitrite accumulation occurred temperately in the system, piecewise zero-order kinetic model and dynamic model based on Monod equations were both used to describe the experimental data, and related parameters were analyzed.

在系统亚硝酸盐暂时积累条件下，分别采用分段零级动力学模型和基于Monod方程的动态模型，拟合试验数据，并求算相应的动力学参数。

For the Bezier tensor product surface, recursive degree elevation and subdivision both generate a sequence of control meshes that converge to the underlying Bezier surface, and get the piecewise bilinear approximation of the original surface.

将升阶和子划分算法分别应用于Bézier张量积曲面，会产生一系列的控制网格，得到原曲面的分片双线性逼近。

This paper presents a new class of piecewise trigonometric polynomial curves and a weighted trigonometric polynomial curve which has simple structure and can be used to design curves.

提出了一类新的分段三角多项式曲线，给出了加权三角多项式曲线，表示式结构简单，能用于曲线设计。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。