Re: Pattern recognition

From: Perry E. Metzger (
Date: Tue Oct 07 2003 - 11:03:38 MDT

Stephen Reed <> writes:
> Cyc has three separate vocabularies for representing color, addressing the
> issues raised by Ferrer i Concho and Sol. At one extreme is the concise
> notions of ChristmasColors and HalloweenColors color schemes that utilize
> fuzzy sets RedColor/GreenColor and OrangeColor/BlackColor. On the
> other extreme is the RGB color vocabulary that defines a color in
> terms of its measurements of Red, Green and Blue light.

For most colors perceived by humans, there are two ways to generate
the perceived color -- either by the use of varying intensities of
red, green and blue light, or by using a single light of some given
frequency. Thus, Cyc does not unambiguously describe colors even given
what you are describing. :)

Perry E. Metzger

This archive was generated by hypermail 2.1.5 : Wed Jul 17 2013 - 04:00:43 MDT