opencog-dev team mailing list archive

[Samir Araújo <samir.araujo@xxxxxxxxx>]

Hi Troy,

I don't know if you've succeed in configuring Embodiment to control the
robot, using ImplicationLinks, but here
http://www.opencog.org/wiki/Embodiment#Language_Comprehension you can find a
documentation about the Language Comprehension module, which was integrated
into opencog a few days ago. In the Reference and Command resolution
sections you will find how a specific command can be implemented to be fired
by a simple English sentence. If you have any question, please feel free to
send an email to the list or post it on the #opencog channel at
irc.freenode.net.

Samir



On Tue, Aug 11, 2009 at 9:28 AM, Ben Goertzel <ben@xxxxxxxxxxxx> wrote:

>
> By popular demand, I'm forwarding this email to the list...
>
> ben g
>
> ---------- Forwarded message ----------
> From: Samir Araújo <samir@xxxxxxxxxxxxx>
> Date: 2009/8/10
> Subject: Coding an OpenCog implication for the robot to carry out a command
> like "Do Tai Chi"
> To: Troy Huang <huangdeheng@xxxxxxxxx>
> Cc: Ben Goertzel <ben@xxxxxxxxxxxx>
>
>
>  Hi Troy,
>
> in order to convert a sentence into a command, you will need to create an
> ImplicationLink that has in its preconditions a test to check the presence
> of the desired sentence into the AtomTable.
> i.e.
>
> ImplicationLink
>      EvaluationLink *(preconditions. You can use an AndLink to evaluate
> more than one precondition)*
>          PredicateNode:"actionDone"
>              ListLink
>                  ExecutionLink
>                      GroundedSchemaNode:"say"
>                      ListLink
>                            AvatarNode:"RobotOwner"
>                            SentenceNode:"to:robot_id: *do tai chi*"
>
>      ExecutionLink *(effect)*
>          GroundedSchemaNode "tai_chi"
>          ListLink
>
> (You can write ImpLinks directly in C++ or using a bind script language
> like Scheme)
>
> You must to pass, as an argument, the Handle of the defined ImpLink to the
> pattern match (opencog/query/PatternMatch::imply(Handle)).If the
> preconditions are satisfied, the PatternMatch will create the effect  (in
> this case an ExecutionLink containing the schema that will execute the
> desired action) into the AtomTable and then it will return the handle of the
> execution link. Finally, you must to evaluate the returned ExecutionLink and
> then call the appropriate library to make the robot execute the action.  If
> you're implementing the action procedure using Combo, for example, you will
> need to define a built-in Combo procedure (written in C++) and send the
> GroundedSchemaNode to Combo Procedure Interpreter to be executed. This
> process must be repeated every time a new sentence was said to the robot.
>
> Well, this is a very simplified description of the whole process. Obviously
> you will need to build an ImpLink that detects not only the presence of a
> SentenceNode into the AtomTable, but it must to detect what was the latest
> said sentence, who said, etc... So, if you send me more informations  about
> how you're integrating OpenCog with the robot, I can help you to prepare the
> module that will evaluate the rules (ImpLinks) and execute the actions in
> the robot. (are you using Embodiment? are you using Relex to parse the said
> sentences? if you're not using relex, how the sentence comes from the proxy?
> etc...)
>
> Samir
>
>
>
>
>
>
>
>
>
>
>
>
> --
> Ben Goertzel, PhD
> CEO, Novamente LLC and Biomind LLC
> Director of Research, SIAI
> ben@xxxxxxxxxxxx
>
> "Truth is a pathless land" -- Jiddu Krishnamurti
>
>
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