查询词典 programmed learning

Aimed at the characteristic of multiple types of faults possibly happened in nuclear power plant, large scale of training sample, and requirement of quick and accurate diagnosing, after the analysis of large sample number generated by large fault type exceeds limitation of 64K paragraph in DOS and large number of local minmum in error surface, measurements of same format of data file, Win95/NT operating system platform, resetting weight learning rate, dynamic training set in quick learning algorithm and improvement on quick learning algorithm using homotopy method which can avoid local minmum points in error surface have been adopted to ensure quickly and effective process of the course of neural network's training and testing.

针对核动力装置可能发生的故障种类多，训练样本规模大，故障诊断需要快速准确的特点等，分析了样本多和故障种类多产生的训练样本量超出DOS段大小和网络误差曲面上局部极小值多的情况，采取了使用相同格式数据文件、Win95/NT操作系统平台，对快速学习算法采用重置神经网络权值学习率和动态训练集、并采用能够有效克服网络误差曲面上局部极小点的同伦方法对学习算法进行改进等措施保证神经网络训练测试过程的快速、有效地进行；针对装置发生的故障须快速、准确诊断的需要，分析了故障的产生对装置参数变化的影响及操纵员对故障诊断的基础，在核动力装置发生故障时参数曲线的变化量与正常运行时参数曲线的变化量存在明显差异的基础上，提出采用参数曲线的变化量作为神经网络的输入，并围绕参数变化量的方法采用二次曲线拟合滤波求变化量和阈值技术来保证神经网络得到精确的装置参数变化量，从而得到准确的诊断结果。

In this paper, we discuss the learning control for nonlinear discrete system with delay. It is not necessary to use the desired input corresponding to the desired output and the desired state corresponding to the system in our learning algorithm and in the process of learning control. Therefore, our method needs less dynamics information of the controlled object than previous ones and only the qualitative Lipschitz condition is required.

摘 要：讨论了滞后非线性离散系统的学习控制问题，由于所给的学习算法及学习控制过程中，没有涉及和用到相应于理想输出yd的理想输入ud及对应于系统的理想状态xd，故对被控对象的动力学信息要求得很少，只是一种定性上的Lipschitz条件。

This article provided by the machine learning, word learning, hearing test simulation and electronic books in four learning tools, will allow you to quickly improve the level of foreign language proficiency.

本机器提供的文章学习、单词学习、听力测试模拟和电子图书的四种学习手段，将使您的外语水平快速提高。

The thesis is based mostly on three recent papers on learning gibbs distributions. They are [Zhu 97]"s work on creating a unified statistical framework by minimax entropy principle, which is then used to learn texture images, [Guo 01]"s proposal for learning the distribution of intrinsic texture element by gibbs model and [Liu 01]s introduction of the minimax Entropy idea to the learning of Inhomogeneous Gibbs Model.

本论文的基本出发点是基于下面三篇关于吉布斯学习的重要文献，即[Zhu 97]中创造的用最小最大熵准则学习纹理图像分布的一套统计框架，[Guo 01]中提到的用吉布斯模型学习纹理基元分布的方法，以及[Liu 01]中介绍的关于非均匀吉布斯模型(Inhomogeneous Gibbs Model，简称IGM)的学习机制。

The results indicate that female wasps deposit HMPs on the chorion of host eggs with her ovipositor near the end of egg-laying process. Na ye females do not posses the ability for recognizing the marking pheromones and have to obtain the ability though the learning process, in which the wasp inserts her ovipositor into a host egg to determine whether the egg has been parasitized followed by antennal drumming on the exterior. Once the learning process is completed, the female wasp will be able to discriminate between parasitized and unparasitized hosts and reject a parasitized egg by simply drumming on the exterior of the egg. Learning plays an important role in reducing initial rejection time when an unsuitable host is encountered. Female wasps of T. astriniae can quickly learn to associate the presence of a HMP on host egg chrion with the internal status of the egg.

研究结果表明，玉米螟赤眼蜂的寄主标记信息素是在其产卵过程中的收场阶段由产卵器产生的，并且标记在寄主卵表的化学物质；玉米螟赤眼蜂对标记信息素的识别不具有先天性，其必须先用产卵器插入寄生卵来检测是否被寄生，然后其触角不停地敲击，通过学习获得对标记信息素的识别能力，从而放弃了对寄生卵的选择，学习对初始放弃时间有着重要影响，改善了其对寄主搜索效率，这种学习行为是与寄主联系在一起学习的，它能根据寄主被寄生与否而对标记信息素作出反应与不反应。

In primary school and middle school of our country, compared with the traditional and pervasively executed accepting learning, inquiry learning as a new way of instruction is used scarcely in subject instruction. How to carry inquiry learning forward in practice at present is also a problem we faced with.

在我国的中小学，相对于传统的、普遍实施的接受性学习而言，研究性学习作为一种新的教学方式在学科教学中应用还较少，如何在中小学现有的情况下在实践层面进一步推进，还是目前面临的一个不小的课题。

This learning algorithm could reduce the status space and predigest the design of reinforcement functions so as to improve the learning speed and the veracity of learning results.

这种学习方法能够减小状态空间并简化强化函数的设计，从而提高了学习的速率以及学习结果的准确性，并使学习过程实现了决策的逐步求精。

Neural network competitive learning algorithms are widely used for vector quantization. In this paper, some typical competitive learning algorithms have been specially investigated and analyzed . A new competitive learning algorithm based on the neuron win probability is presented for vector quantization.

用于矢量量化的神经网络竞争学习算法徐勇陈贺新戴逸松（长春邮电学院，长春130012）（吉林工业大学，长春130025）摘要对典型的竞争学习算法进行了研究和分析，提出了一种基于神经元获胜概率的概率敏感竞争学习算法。

All learning concerned with the acquisition of cognitive knowledge and cognitive skills as well as affective learning and some psychomotor learning is effectively provided for by distance education.

所有的涉及认知，认知技能，以及有效学习，和心理动机学习的学习方式都可以由远距离教育提供。

Students' learning performance: students' learning motivation and attitude affect their learning performance in the puppetry curriculum.

学生学习成效：学生对布袋戏课程的学习动机与学习态度影响学习成效。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。