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基于先验知识的杂交方法的设计及其在化工问题中的应用

陈翀伟; 陈德钊   

  1. Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-08-28 发布日期:2002-08-28
  • 通讯作者: 陈翀伟

Design Hybrid Methods for Encoding Prior Knowledge in Feedforward Network with Application
in Chemical Engineering

CHEN Chongwei; CHEN Dezhao   

  1. Department of Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-08-28 Published:2002-08-28
  • Contact: CHEN Chongwei

摘要: Three-layer feedforward networks have been widely used in modeling chemical engineering
processes and prior-knowledge-based methods have been introduced to improve their
performances. In this paper, we propose the methodology of designing better prior-
knowledge-based hybrid methods by combining the existing ones. Then according to this
methodology, two hybrid methods, interpolation-optimization (IO) method and
interpolationpenalty-function (IPF) method, are designed as examples. Finally, both methods
are applied to modeling two cases in chemical engineering to investigate their
effectiveness. Simulation results show that the performances of the hybrid methods are
better than those of their parents.

关键词: hybrid method;interpolation-optimization method;interpolation-penalty-function method; prior knowledge;feedforward network

Abstract: Three-layer feedforward networks have been widely used in modeling chemical engineering
processes and prior-knowledge-based methods have been introduced to improve their
performances. In this paper, we propose the methodology of designing better prior-
knowledge-based hybrid methods by combining the existing ones. Then according to this
methodology, two hybrid methods, interpolation-optimization (IO) method and
interpolationpenalty-function (IPF) method, are designed as examples. Finally, both methods
are applied to modeling two cases in chemical engineering to investigate their
effectiveness. Simulation results show that the performances of the hybrid methods are
better than those of their parents.

Key words: hybrid method, interpolation-optimization method, interpolation-penalty-function method, prior knowledge, feedforward network