Considering the limitation of classical BP algorithm, modified BP algorithm is used to train the network.
考虑到经典BP算法的缺陷，采用改进BP算法对网络进行训练学习。
Improved BP algorithm is used to train the network and the precision and rate of management are advanced. The results show that this method is effective.
试验结果表明，用改进的BP网络对灰度图像直接感知，在定位精度和速度方面取得较好的效果。
In this model, back propagation algorithm based on forward networks was conducted to learn information of historical data and to train the network weights.
以人工神经网络的前馈型网络为基础结构，基于反向传播算法进行学习和训练来拟和证券价格指数的运动趋势。
The first order gradient optimization algorithm is employed to train the network. The training samples stem from the neutron kinetics of the point-reactor.
神经网络的训练采用一阶梯度优化算法，利用点堆中子动力学模型产生训练样本。
Moreover, an improved conjugate gradient algorithm is used to train the network and to overcome the shortcoming of easily trapping into local minimum points.
网络训练时采用共轭梯度学习算法并对此算法进行了改进，有效的克服了梯度学习算法容易陷入局部极小的缺点。
The actual data of naval vessel sonar are used to train the network, and then the trained neural network can forecast the naval vessel sonar self-noise accurately.
利用舰艇声呐实测数据进行网络训练，训练好的神经网络可以对舰艇声呐部位自噪声进行精确预报。
Some data were chosen to train the network model. The results show that the convergence rate was faster, the model had higher accuracy, the average absolute error can reach 0.002 7%.
对现场收集的数据进行仿真学习，结果表明，该预测模型收敛速度快，具有较高的预测精度，平均绝对误差可达到0.002 7%。
When BP network model is established, 8 parameters affecting the debris flows activity of the studying area are chose as the net input layer, and 20 samples are used to train the network.
在BP网络模型建立时采用了对研究区泥石流活跃程度影响最主要的8个参数作为输入层，并选取了研究区的20个样本对网络进行训练。
Combined Genetic Algorithms (ga) and back-propagation neural network (BP), an optimized GA-BP model was established to predict phosphorus content. Some data were chosen to train the network model.
结合遗传算法(GA)和误差反馈型神经网络(BP)，建立了优化的GA - BP神经网络预测模型，预测转炉炼钢过程钢液终点磷含量。
Every January the cost of travelling by train rises, imposing a significant extra burden on those who have no option but to use the rail network to get to work or otherwise.
每年一月，乘火车出行的费用都在上涨，对于那些除了乘坐火车上班之外别无选择的人来说，这给他们带来了巨大的额外负担。
With a speed of 250 km per hour, it's also the first mountain heavy train line to provide a 4G network.
它的时速为250公里，也是第一条提供4G网络的山地重载铁路线。
It's surprising what China has done in the past ten years in terms of train travel—it now has the biggest high-speed railway network in the world.
过去十年间，中国在列车运输方面的成就令人惊讶——如今中国已拥有世界上最大的高速铁路网。
In January 1989, the Community of European Railways presented their proposal for a high speed pan European train network extending from Sweden to Sicily.
1989年1月，欧洲铁路共同体提出了从瑞典到西西里岛建设泛欧高速铁路网的建议。
In January 1989, the Community of European Railways presented their proposal for a high speed pan-European train network extending from Sweden to Sicily, and from Portugal to Poland by the year 2020.
1989年1月，欧洲铁路共同体提出了一项建议，即在2020年前建成一个从瑞典延伸到西西里岛、从葡萄牙延伸到波兰的泛欧高速铁路网。
Europe's largest high-speed rail operator has predicted that domestic air travel in the UK will lose millions of passengers to a 250mph train service if an ultra-fast network becomes a reality.
欧洲最大的高铁运营商预测，如果超高速铁路网络能够建成，其列车时速可高达250英里，那么英国国内的航空业将失去数百万的乘客。
Using the train network is a viable option, especially if journeying city-to-city within Europe and places like Japan where the infrastructure is good and the trains are reliable.
使用火车网络是很可行的，特别是欧洲内部的城市之间旅行或者是像日本那样基础建设优良和火车可靠的地方。
Each dot represents a train on the national network; visitors can filter the map to see all the trains bound for a particular station.
每个点代表国家铁路线上的一列火车；用户们可以通过筛选来查看地图上某一个站点的所有火车。
A fight also looms with the European commission over the separation of DB's network and train services: the commission wants the computer systems to be separate too.
对欧洲委员会来说，一场关于DB网运分离的战斗迫在眉睫：委员会想要计算机系统也被剥离。
Train accidents are common in India, where the world's largest railroad network carries more than 14 million passengers each day, but this is the most deadly accident in 2011.
印度经常发生列车事故，在这里，世界最大的铁路网每天运输超过1400万旅客。这起事故时2011年死亡人数最多的事故。
China is lowering the operating speeds on its new bullet train lines because of safety and affordability concerns over the largest high-speed rail network in the world.
作为世界上最大的高铁网络的安全以及支付能力的考虑，中国正在降低新子弹头列车的行驶速度。
Feedforward networks use back propagation algorithm to train a multi-layer network. After training, the multi-layer network can fit the function in the data space very well.
前向网络利用反向传播算法训练多层网络，使训练后的网络较好地拟合样本空间中各点的函数值。
This dissertation designs a service time-space network combined with train formation plan and train schedule for the first time, which makes for modeling dynamic empty car distribution.
首次提出了融合列车编组计划和列车运行图的服务时空网络概念，为研究动态空车调配问题提供了一种有效的技术手段和建模方法。
Then immune evolutionary algorithm is used to train the RBF network, which reduces the searching space of canonical evolutionary algorithm and improves the convergence speed.
采用免疫进化算法训练r BF网络，进一步缩小了标准进化算法搜索空间的范围，提高了算法的收敛速度。
Simulated data sets based on the Integration Equation Model (IEM) are used to train the neural network.
反演使用的模拟数据是用IEM模型得到的，并用来训练神经网络。
Based on the introduction to neural network principle, two methods of solving free train schedule and traffic flow prediction in transportation system with neural network are analyzed.
在简要介绍神经网络原理的基础上，分析了采用神经网络解决交通系统中空车调度及交通流预测的原理及方法。
Adopting search technique, database technique and network technique, the thesis realizes the news search engine that applies to the system and provides real time news for fast train.
本文结合搜索、数据库、网络等多种技术，实现了用于高速铁路旅客信息系统的新闻搜索引擎，该引擎为高速列车提供实时新闻。
Adopting search technique, database technique and network technique, the thesis realizes the news search engine that applies to the system and provides real time news for fast train.
本文结合搜索、数据库、网络等多种技术，实现了用于高速铁路旅客信息系统的新闻搜索引擎，该引擎为高速列车提供实时新闻。
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