Does intelligent CAD exist?

doi:10.1016/0954-1810(90)90002-L

Artificial Intelligence in Engineering

Volume 5, Issue 2, April 1990, Pages 55-64

https://doi.org/10.1016/0954-1810(90)90002-L Get rights and content

Abstract

Intelligent CAD is a term which has grown in popularity in recent years as the results of research into Artificial Intelligence (AI) get applied to design problems. But there is confusion as to what the term means; e.g. whether current generations of expert systems for design are Intelligent CAD, or whether Intelligent CAD is simply an unachievable goal.

This paper argues that Intelligent CAD represents a vision which is almost identical to the earliest visions of Computer Aided Design (CAD). The major difference now is that we have the opportunity through our improved knowledge of AI and cognitive science to take important strides towards delivering CAD systems close to these visions. However, the opportunity may be missed if we concentrate on the wrong issues.

It is also argued that developments towards Intelligent CAD will be successful only if they accept the following tenets:

1.
design is considered as an intellectual knowledge-based process,
2.
systems do not need to replicate human intelligence; they are required only to exhibit behaviour regarded as intelligent, and
3.
necessary components of such systems are knowledge-rich models of designs, the capacity for tacit knowledge, and the ability to learn.

References (18)

K.J. MacCallum et al.
An intelligent concept design assistant
K. Forbus
Intelligent computer aided engineering
AI Magazine
(Fall 1988)
Chandrasekaran
In the dark ages of AI: Panel Discussion at AAAI-84
AI Magazine
(Fall 1985)
I.E. Sutherland
Sketchpad: A man-machine graphical communication system
(January 1963)
R.W. Mann et al.
Computer aided design
A. Sloman
The Computer Revolution in Philosophy
A. Bijl
An approach to design theory
K.J. MacCallum et al.
The knowledge cube — a research framework for intelligent CAD
H.A. Simon
The Sciences of the Artificial
(1981)

There are more references available in the full text version of this article.

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View full text

Does intelligent CAD exist?

Abstract

An intelligent concept design assistant

Intelligent computer aided engineering

AI Magazine

In the dark ages of AI: Panel Discussion at AAAI-84

AI Magazine

Sketchpad: A man-machine graphical communication system

Computer aided design

The Computer Revolution in Philosophy

An approach to design theory

The knowledge cube — a research framework for intelligent CAD

The Sciences of the Artificial