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* Ontology CRAwler (OCRA) v. 2.0
* Feb 19, 2004
* (c) 2004 Jennifer Golbeck
* golbeck@cs.umd.edu
* MINDSWAP, University of Maryland, College Park
* http://trust.mindswap.org
*
*
* This work is licensed under the creative commons Attribution Share-Alike license
* http://creativecommons.org/licenses/by-sa/1.0/
This is a simple crawler that uses seeAlso references and URI names. To run the crawler, use the run.sh file:
sh run.sh
In its current form, the crawler parses each file, but does not store the objects and triples. In the Ocra.java file, you can insert your own code (starting at line 62, marked with a comment) to handle the triples. Sample applications could include searching for subjects of a specific type and building a network (e.g. a network of foaf:people).
OCRA uses Jena, which has the following license and copyright (taken directly from http://jena.sourceforge.net/license.html)
=============================== Copyright 2000, 2001, 2002, 2003, 2004 Hewlett-Packard Development Company, LP
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Jena includes software developed by the Apache Software Foundation (http://www.apache.org/).
Jena is built on top of other sub-systems which we gratefully acknowledge:
* Xerces
* JUnit
* Jakarta ORO
* ICU4J
* util.concurrent from Doug Lea
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