[Attempto] Generate ACE sinppets for an OWL class

[Jiang, Guoqian, Ph.D.]

Kaarel,

Thank you very much for notes.

Looking forward to seeing your source release of ACE View plugin.

The process of the ACE view generation you described is very helpful. I
just wonder if there is a way that I can get an initialized instance of
ACETextManger (or other factory class) directly from your ACEView plugin
and reuse those ace snippets or sentences already processed by your
plugin.

Thanks,

-Guoqian 



Today's Topics:

   1. Re: Generate ACE sinppets for an OWL class (Kaarel Kaljurand)


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Message: 1
Date: Sun, 14 Dec 2008 22:19:31 +0100
From: "Kaarel Kaljurand" <kaljurand at gmail.com>
Subject: Re: [Attempto] Generate ACE sinppets for an OWL class
To: attempto at ifi.uzh.ch
Message-ID:
	<161f6fb70812141319o5de7337ica24857556706f0b at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hi,

On Sat, Dec 13, 2008 at 7:33 PM, Jiang, Guoqian, Ph.D.
<Jiang.Guoqian at mayo.edu> wrote:
>
> I am trying to reuse of your ACE View api to get a set of ACE
sentences
> and/or snippets for the axioms of a specific OWLClass in an owl
> ontology.

ACE View is a plug-in for Protege 4.
At this point it's not intended to be used as a stand-alone API.

Within the Protege environment, if you want to see all the snippets
that map to axioms
which reference a certain class, then just select the respective class
and filter out the
snippets in the "Snippets View".

ACE View uses the OWL verbalizer to convert OWL axioms into ACE
snippets.
Each axiom is mapped to exactly one snippet (sequence of one or more ACE
sentences). In some cases the mapping fails, then the axiom is "mapped"
to
an error message, something like:

/* BUG: axiom too complex */

By default, the verbalizer just produces a plain text output
containing all the resulting
sentences. Using the flag 'html' you get a more structured output, in
the form
of an HTML-table where the first column contains the input axioms, and
the second column
the corresponding snippets. Usage example:

./owl_to_ace.exe -owlfile examples/example1.owx -html

It's relatively easy to define your own output format, by changing
'output_results.pl'.
The OWL verbalizer is available here:

http://attempto.ifi.uzh.ch/site/downloads/files/owl_verbalizer-081202_un
official.zip


> The first question is that, is the source code available for the ACE
> view plugin?

Not yet. I'm planning to release it under LGPL early next year. Let me
know if
you need to get the source earlier.


> The second question is that are there some sample codes or
> documentations avaialable  to demonstrate how a set of ACE sentences
> and/or snippets could be generated from the axioms of a specific
> OWLClass through using your ACE view api?

Short answer is that there is no sample code nor documentation.

ACE View does all the verbalization work using the OWL verbalizer.
(Well, actually about 5 more frequent axiom types are verbalized
directly in Java
for performance reasons.)

ACE View uses the OWL verbalizer via the interface provided by the
Attempto Java Packages.
The respective class is described here:

http://attempto.ifi.uzh.ch/site/docs/java/ch/uzh/ifi/attempto/owl/Verbal
izerWebservice.html

So, if you want to work entirely in Java and your task is to verbalize
certain axioms as ACE
snippets, then proceed as follows:

1. Learn to use the OWL-API (http://owlapi.sourceforge.net/). Take the
SVN version
because the public version (2.2.0) is out of date with respect to the
version that Protege 4 is using
and that the OWL verbalizer is tested against. The SVN version is very
stable.

2. Write a program using the OWL API which:

2.1. Loads your OWL ontology
2.2. Walks over all the axioms that the ontology contains
2.3. If an axiom references your class then places it into a fresh
ontology
2.4. Serializes this ontology as OWL 2 XML
2.5. Sends the serialization to the OWL verbalizer webservice
2.6. Gets back the ACE snippet and does something with it
2.7. Goes to step 2.3 until done.

Let me know if I misunderstood something.

--
kaarel


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