Analysis and Forecast of Urban Economic Vitality in Northeast China

• 作者: Licai Wei Xuan Cui Yali Zhang
• 来源期刊: 财经研究杂志(英文)
• 学科: 工学
• 关键词: BP neural network Vitality of economic development ADVICE
• 年，卷（期）: 2020,（1）
• 页码范围: 36-41
• 页数: 6页
• 分类号: TP1

摘要

Taking into account the passage of time,the original economic vitality index will vary with changes in social development,we use the BP neural network nearly a decade as the original GDP data for the next 30 years the GDP forecast.BP neural network in 1985,proposed by Rumelhart,the algorithm solves the system of learning problems multilayer neural network connection weights hidden layer[1].It consists of an input layer,a hidden layer,and an output layer.The principle is to continuously adjust the network weights and thresholds by transmitting errors backward and then correcting the errors to achieve the desired input-output mapping.