[agtk-devel] Annotation trees instead of Annotation Graphs?

[Fredrik K. <dar...@gm...>]

Hi,

First of all: great work on the AGTk. I very much like the design and
flexibility of the Annotation Graph.

However, when reviewing the QLDB website and LPath, it seems that you
have drifted from the annotation graph concept and adopted a
tree-based approach instead, or maybe I have misunderstood the
expressiveness of the language?

Does LPath require the user to memorize the sometimes arbitrary
placement of an annotation tier in  a tree in order to construct
queries?


Hi,

First of all: great work on the AGTk. I very much like the design and
flexibility of the Annotation Graph.

However, when reviewing the QLDB website and LPath, it seems that you
have drifted from the annotation graph concept and adopted a
tree-based approach instead, or maybe I have misunderstood the
expressiveness of the language?

Does LPath require the user to memorize the sometimes arbitrary
placement of an annotation tier in  a tree in order to construct
queries?

/Fredrik

Tuesday 06 March 2007 15:59 skrev Eric J. M. Smith:
> On 5-Mar-07, at 5:12 PM, Steven Bird wrote:
> > Thanks for posting this question.  Since we did the work you
> > described, we've developed a new path language for linguistic tree
> > query, called LPath, and implemented it on top of a relational
> > database that holds AG-style representations of annotations.  The
> > following webpage has the pointers to publications about LPath and
> > some information about a new graphical interface we've developed.
> >
> > http://projects.ldc.upenn.edu/QLDB/
>
> Thanks, Steven.  I did look at LPath, but thought that it wasn't what
> I was looking for.  It seemed more tree-oriented, and I was looking
> for something to query annotation graphs directly.  My data isn't
> very treeish, so LPath didn't seem appropriate.  I'll check it out
> again.
>
> Thanks,
>
> Eric J. M. Smith
> Dept. of Linguistics
> University of Toronto
>
>
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