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development-risk-prediction
本文基于BP神经网络应用于预测的原理,提出预测步骤及预测可行性,探讨建立基于BP神经网络的预测模型的关键技术,包括样本的选取与预处理、输入输出变量的选取、隐层节点数的确定、初始权值和阈值的选取、激活函数、训练算法与参数的选取,最后建立合理的网络模型;结合住宅市场的实际情况,建立两类BP 神经网络预测模型:基于时间序列的趋势预测模型以及基于影响因素的回归预测模型,即分别采用神经网络趋势预测和回归预测的思路,把住宅市场的供给、需求与房价的历年数据以及其影响因素的数据分别作为学习样本,建立预测模型,进行预测。(Real estate development risk prediction
)
- 2011-04-22 10:40:30下载
- 积分:1
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project
GUI 是一种结合计算机科学、美学、心理学、行为学,及各商业领域需求分析的人机系统工程,强调人—机—环境三者作为一个系统进行总体设计。(GUI is a combination of computer science, aesthetics, psychology, behavioral science, and the commercial areas of human-computer systems engineering requirements analysis, emphasizing the human- machine- environment as a system of three overall design.)
- 2013-09-24 21:21:12下载
- 积分:1
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v-blast-detectors-44
4*4MIMO系统V-blast系统,内含调制解调程序,接受算法包括ZF,MMSE,ML(4* 4MIMO system V-blast system, including modulation and demodulation process, acceptance algorithm includes ZF, MMSE, ML)
- 2021-04-26 19:18:45下载
- 积分:1
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FIR滤波器
说明: 用matlab实现fir低通滤波器,还有在simulink仿真(The f.i.r low-pass filter is implemented by matlab and simulated in simulink.)
- 2020-04-10 21:49:00下载
- 积分:1
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Twophasesuddenshortcircuitloadwithoutdampingwindin
突然两相负载短路无阻尼绕组用matlab编程(Two-phase sudden short-circuit load without damping windings)
- 2009-05-02 12:31:34下载
- 积分:1
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dispersion
说明: 利用FDTD模拟光子晶体光纤中的色散的程序,是在wang.m程序基础上改进之后计算色散的。(FDTD simulation of photonic crystal fiber used in the dispersion of the procedure is based on the improvements in the program after wang.m calculated dispersion.)
- 2010-04-12 21:41:55下载
- 积分:1
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pinlvlizi
可以求出五自由度的并联机器人的系统频率,及动平台的速度、位移及加速度图形(System frequency of the five degrees of freedom parallel robot.)
- 2012-07-18 20:11:58下载
- 积分:1
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agent
说明: 基于agent图的脆性仿真程序,研究对象是船舶电力系统(Agent-based simulation program brittle graphs, study the ship power system)
- 2011-04-06 15:25:22下载
- 积分:1
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dsgfdsg4564
Import form iges to matlab and autocad
- 2012-03-22 00:44:15下载
- 积分:1
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PCNN(脉冲耦合神经网络)
将PCNN(脉冲耦合神经网络)用于图像融合,以红外光强与偏振图像的融合作为例子。(PCNN (pulse coupled neural network) is applied to image fusion, taking the fusion of infrared and polarization images as an example.)
- 2021-04-27 21:18:44下载
- 积分:1