无约束的

Its global convergence and linear convergence rate were proved under some mild conditions.

提出一类新的求解无约束优化问题的记忆梯度法，在较弱条件下证明了算法具有全局收敛性和线性收敛速率。

Chapter 3 is devoted to the study of the convergence theory of a dual algorithm for unconstrained minimax problems.

第3章给出无约束极大极小问题的一个对偶算法的收敛理论。

Trust region is to deal with nonlinear optimization of a relatively new approach.

本文作者给出了一种改进的针对无约束非光滑优化问题的信赖域算法。

Conjugate gradient methods are very important for solving nonlinear optimization problems.

共轭梯度法是解决无约束非线性最优化问题的重要的方法之一。

By choosing appropriate Green functions, a set of null field equations suitable for this half space problem is obtained.

通过选用适当的Green函数，得到了一组适合于半空间问题的无约束场方程。

As an unconstrained optimization problem, it has a lot of methods to solve for its special structure.

作为一个无约束最优化问题，由于其结构的特殊性，存在很多利用其结构特征的有效算法。

In this paper,we consider a new parallel algorithm for linear Least-square problems.

本文讨论了求解无约束线性最小二乘问题的一种并行算法以及对它的改进。

In Chapter 3, we propose two new quasi-Newton type trust region methods for solving unconstrained optimization problems. These algorithms combine two types of the preconvex part of modified Broydens family proposed in chapter 1 with trust region algorithm effectively, they have global convergence property and superlinear convergence rate.

第三章，给出了用来求解无约束最优化问题两种新的拟牛顿信赖域算法，这些算法将第一章给出的两种修改Broyden非凸族与信赖域算法有效结合起来，它们具有全局收敛性和超线性收敛速度。

At first, the theory and method of unconstrained E-pulse synthesis are obtained based on the theoretical deduction.

首先，在理论推导的基础上，给出无约束E-脉冲波形综合的原理和方法。

Trust region algorithm is an effective algorithm for unconstrained optimization problems.

信赖域算法是求解无约束优化问题的一种有效的算法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。