[seek-kr-sms] is there any query language in sparrow dl?

[Shawn Bowers]

Serguei,

There isn't a sparrow query language.  But, since ultimately sparrow is 
a prolog application, the query language comes for free.  (Note that our 
progress on sparrow has been slow, since we've been doing other things ...)

What exactly do you want to query?  (e.g., for individuals -- i.e., data 
-- or for classes, properties -- i.e., schema).

Also, what query use cases do you have in mind?

My suggestion would be to figure out why you want a query language and 
who the query language is for. Since you say it would eventually be 
graphical, you should start with the graphical "language"/interface, 
then see what expressivity you need in a query language.

We used a conjuntive query style language in our ant prototype.  This 
language makes query answering and other techniques convenient, but 
isn't great for users.  The same can be said of RQL or any of the other 
SQL-like languages.


shawn



Serguei Krivov wrote:

> Bertram and Shawn,
> 
> I'm trying to think about a query language adequate for DL knowledge
> bases,  with intension to make a graphic version of it (sometime in
> future).  I wonder if you have already one in Sparrow DL or planning to
> have one?  Is this the right time to ask about syntax and examples of
> Sparrow DL?
> 
> Or otherwise besides Racer query languages (RQL and nRQL) could you
> recommend any QL specifically designed for DL KBs?
> 
> Thanks,
> Serguei
> 
> 
> 
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