Re: Homework 3 Query

[Subbarao Kambhampati <rao@asu.edu>]

At 03:47 PM 10/29/2004, you wrote:

> Hello Dr. Rao,
> I needed a clarification regarding the domain description given for
> homework 
> 3. As such its not explicitly specified in the domain description as to
> whether it is possible to load a plane/truck with mulitple objects i.e.
> even 
> if package 1 is loaded in truck 1 we can load package 2 also in truck 2.
> I 
> have looked as the standard logistics domain used in competition in which
> they 
> allow a vehicle to contain multiple packages at a time. So here also
> should we 
> assume the same?
>
> Thanks.
> Hemal

Yes--concurrent loading is possible. This is not a question of
"interpretation". You need to figure this out by
just looking at the description of load action.

  (:durative-action load
    :parameters (?x - packet ?y - vehicle ?z - location)
    :duration (= ?duration (loading-time))
    :condition (and 
        (at start
(at ?x ?z))
        (over all
(at ?y ?z)))
    :effect (and 
        (at start
(not (at ?x ?z)))
        (at end
(in ?x ?y)))
  )

You notice that (load P1 V L) and (load P2 V L) are
not interfering. 

rao