strict warning: Only variables should be passed by reference in /home/local/www/molto-project.eu/modules/book/book.module on line 559.

     

4. KRI as a Virtual Image

A virtual image of the KRI is available on sftp://ftp.ontotext.com. Table 1 below presents some of its basic characteristics.

vmdk filesVM/MOLTO.tar
operating systemUbuntu 10.04.1
user nameonto
passwordguest
rdfdb folder/home/onto/rdfdb
knowledge base folder/home/onto/rdfdb
owlim configuration file/home/onto/rdfdb/config/rdfdb.ttl

Table 1 - KRI as a Virtual Image

The user starts the RDFDB (and respectively OWLIM) by /home/onto/rdfdb/bin/rdfdb start.sh and stops it by /home/onto/rdfdb/bin/rdfdb stop.sh. To change the knowledge base one has to:

  • stop the RDFDB
  • delete the folder /home/onto/rdfdb/bin/populated
  • change the content of the knoledge base folder

The reasoning rule-set used by OWLIM is set in the owlim configuration file as the value of the owlim:ruleset parameter. The default rule-set is owl-horst but one could change it to owl-max, for example. If the user needs a custom rule-set, then one has to specify it in a *.pie file, which is a part of the knowledge base. The KRI uses internally a lighttpd server. It is started by cd /home/onto/gf-src-3.1.6/src/server followed by lighttpd -f lighttpd.conf.

The KRI web UI is accessible via a tomcat server on port 8080. The tomcat server is started by sudo/etc/init.d/tomcat6 start and stopped by sudo /etc/init.d/tomcat6 stop.

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