二次函数

First,we proposes the acceleration of Monte Carlo EM Algorithm,which is based on Monte Carlo EM Algorithm and Newton-Raphson algorithm,to improve the convergence rate;Second,the it is shown that the accelerated EM algorithm we proposed has quadratic convergence rate in a neighborhood of the posterior mode;Finally,its excellent performance in convergence rate is illustrated by a classical example.

受Monte Carlo EM算法与EM加速算法启发，本文构造了一种新的EM算法，称为Monte Carlo EM加速算法；证明了该算法在似然函数/后验分布的众数的附近确实具有二次收敛速度，改进了Monte Carlo EM算法的收敛速度；并通过一个数值例子的计算结果说明了该算法的优良性，它兼具实现简单及收敛速度快的特点。

Firstly, the existence of Lyapunov function with the quadratic form for linear singular systems is discussed.

然后指出对X的任何正定二次型V，它沿线性广义系统的导数V都不会是X的负定函数。

Then using the Zhengding quadratic form theory, had proven a function of many variables condition extreme value's sufficient condition, and has given its application example.

而后利用正定二次型理论，证明了多元函数条件极值的一个充分条件，并给出了其应用的例子。

The stability study of fuzzy models is usually done using a quadratic Lyapunov function.

模糊模型的稳定性研究通常采用二次型李亚普诺夫函数。

The Six Sigma Black Belt will be able to use a quadratic loss function to compute the cost of a given process.

6西格玛黑带应能使用二次品质损失函数来计算给定过程的成本。

A novel quadratic penalty function based discretization algorithm for Newton optimal power flow is presented.

摘 要 提出了一种新的基于正曲率二次罚函数的最优潮流算法中离散控制量的处理方法。

A new optimal iterative learning algorithm was proposed in the time domain of a linear quadratic performance function, and it is used to simulate some examples.

摘 要：采用1种新方法对基于时间域内二次型性能函数的最优迭代学习算法进行研究，并采用仿真实例对该方法进行验证。

At last, it controlled the linear 2-stage Inverted pendulum using the optimization quadratic method to design the amalgamation function.

最后采用二次寻优的方法设计融合函数并与模糊控制相结合控制二级倒立摆。

Based on quadratic programming model, a new neural network approach is presented.

对于铁路运输中的列车编组计划问题，在二次规划模型的基础上，提出了神经网络优化方法，建立了该问题的计算能量函数，并用数据进行了模拟分析。

In the first chapter, the history of the trust region method based on quadratic model is introduced.

在第一章，我们首先介绍了基于二次模型的传统信赖域方法的概况，紧接着介绍了锥函数的概念和一些性质，最后介绍了锥模型信赖域方法的发展状况。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。