PION (version 1.3.0) requires the SWI-Prolog (version 5.2.0 or higher).

Before starting the PION test, make sure that the PION server and the external DIG DL reasoner Racer (version 1.7.14 or higher) are running. You can do the following:

  • Launch the External DL reasoner Racer
    The DL reasoner Racer can be launched for the default port '8000' by the following command line:
    racer -http 8000

  • Launch the PION server
    Click on pion_server.pl to launch the PION server. If you encounter the global stack limit problem because of a big amount of telldata, you should increase the size of the global stack. The windows users can edit the path setting of 'plwin.exe' in the file pionserver_bigGlobalStack.bat and launch it.
    Click on dig_server_simple8002.pl to launch the DIG simplely forward server for the comparison between query results with a PION and those without a PION.

    The default port of the PION server port is '8001'. The default port of the external DL reasoner is '8000'. The default port of the simplely forward server is '8002'. The default hosts of the PION server and the external DL reasoner are 'localhost'. If you want to use other hosts and ports, change the corresponding setting in Prolog and/or the POST actions in the html file 'pionmain2.htm'.