Pattern Matcher query

[vishnup...@gmail.com]

Hello All,

I want a query such that, 

when i have a particular concept node, it should return the list of concept nodes linked to it. 

For eg:

I have the following

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  "[-77.0325, 38.8749]")(ConceptNode  "090")(ConceptNode  "Washington")(ConceptNode  "hello there")))

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  "[-77.0325, 38.8749]")(ConceptNode  "090")(ConceptNode  "Montgomery")(ConceptNode  "want coffee ")))

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  " ")(ConceptNode  "111")(ConceptNode  "Sydney")(ConceptNode  "pressure is about..")))

When i have ConceptNode "090", return all other concept nodes associated with it. something like below:

[-77.0325, 38.8749], Washington, hello there

[-77.0325, 38.8749],  Montgomery,  want coffee

How can i search? How to write a query for this ? 

Thanks in advance.

[Linas Vepstas]

The cog-incoming-set will return all links that contain some given atom. From this, you can build simple utilities that do what you want.  In fact, many of those simple utilities have been built. See  cog-get-partner cog-chase-link cog-get-link cog-get-pred cog-get-reference  Look in the file here:

https://github.com/opencog/atomspace/blob/master/opencog/scm/utilities.scm

These are all pre-loaded, already so you can view documentation online by sayying, for example   ,d cog-get-link  at the guile prompt, where  ,d is short for ,describe   Note the leading comma.

,a is short for ,apropos and also works

 

--linas

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[vishnup...@gmail.com]

Yes linas. I had a look. 
I got it working :-)

Thank you.

--Vishnu

On Wednesday, 28 September 2016 00:05:33 UTC+2, linas wrote:

The cog-incoming-set will return all links that contain some given atom. From this, you can build simple utilities that do what you want.  In fact, many of those simple utilities have been built. See  cog-get-partner cog-chase-link cog-get-link cog-get-pred cog-get-reference  Look in the file here:

https://github.com/opencog/atomspace/blob/master/opencog/scm/utilities.scm

These are all pre-loaded, already so you can view documentation online by sayying, for example   ,d cog-get-link  at the guile prompt, where  ,d is short for ,describe   Note the leading comma.

,a is short for ,apropos and also works

 

--linas

On Tue, Sep 27, 2016 at 9:15 AM, <vishnup...@gmail.com> wrote:

Hello All,

I want a query such that, 

when i have a particular concept node, it should return the list of concept nodes linked to it. 

For eg:

I have the following

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  "[-77.0325, 38.8749]")(ConceptNode  "090")(ConceptNode  "Washington")(ConceptNode  "hello there")))

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  "[-77.0325, 38.8749]")(ConceptNode  "090")(ConceptNode  "Montgomery")(ConceptNode  "want coffee ")))

(EvaluationLink(PredicateNode "info ")(ListLink(ConceptNode  " ")(ConceptNode  "111")(ConceptNode  "Sydney")(ConceptNode  "pressure is about..")))

When i have ConceptNode "090", return all other concept nodes associated with it. something like below:

[-77.0325, 38.8749], Washington, hello there

[-77.0325, 38.8749],  Montgomery,  want coffee

How can i search? How to write a query for this ? 

Thanks in advance.

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