On Feb 19, 2008 8:49 AM, YKY (Yan King Yin)
<[EMAIL PROTECTED]> wrote:
>
> On 2/19/08, Pei Wang <[EMAIL PROTECTED]> wrote:
> > A purely resolution-based inference engine is mathematically elegant,
> > but completely impractical, because after all the knowledge are
>  > transformed into the clause form required by resolution, most of the
> > semantic information in the knowledge structure is gone, and the
> > result is "equivalent" to the original knowledge in truth-value only.
>  > It is hard to control the direction of the inference without semantic
> > information.
>
>
> I wonder how you can preserve "structural information" in NARS?

By supporting various compound terms/statements.

> If I say "eating sweets will cause cavities" it will be translated in clause
> form as
>     ~ eat_sweets V cavities
> so the direction of causation is lost.  If this directional info is needed,
> we attach additional information to the clause.

How?

> Truth maintenance systems do something like that.

No. That is for something else --- update management.

BTW, classical resolution can be used to answer "wh" questions using
unification.

Pei

>
> YKY
>
>
>
>
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