On 11/26/06, Pei Wang <[EMAIL PROTECTED]> wrote:
Therefore, the problem of using an n-space representation for AGI is not its theoretical possibility (it is possible), but its practical feasibility. I have no doubt that for many limited application, n-space representation is the most natural and efficient choice. However, for a general purpose system, the situation is very different. I'm afraid for AGI we may have to need millions (if not more) dimensions, and it won't be easy to decide in advance what dimensions are necessary.
I see evidence of dimensionality reduction by humans in the fact that adopting a viewpoint has such a strong effect on the kind of information a person is able to absorb. In conversations about politics or religion, I often find ideas that to me seem simple, that I cannot communicate to someone of a different viewpoint. We both start with the same input - some English sentences, say - but I think we compress them in different, yet internally consistent, ways. Their viewpoint is based on a compression scheme that simply compresses out what I am trying to communicate. It may be that psychological repression is the result of compressing out dimensions, or data, that had low utility. Someone who is repeatedly exposed to a trauma which they are unable to do anything about may calculate, subconsciously, that the awareness of that trauma is simply useless information. Trying to suggest a PCA-like dimensionality reduction of concepts by humans has the difficulty that a human should then remember, or be aware of, those implications of a sentence which have had the most variance, or the most impact, in their experiences. In fact, we often find people make the greatest compression along dimensions that have the highest importance to them, compressing a whole set of important distinctions into the binary "good-evil" dimension. It may be that our motivational system can handle only a small number of dimensions - say, five - and that "good-evil" is one of the principle components whose impact is so large we are actually aware of it. ----- This list is sponsored by AGIRI: http://www.agiri.org/email To unsubscribe or change your options, please go to: http://v2.listbox.com/member/?list_id=303
