Software requirements

Third-party software components provide the following functionalities in the system:

• SWI prolog; (in our architectures, (1) SWI-Prolog version 6.2.2 for i386-darwin11.3.0, (2) SWI-Prolog (Multi-threaded, 64 bits, Version 6.2.6). Set the environment variable SWIPL_LIBDIR to the path to the swi-prolog library. The prototype employs Prolog as domain reasoner for certain schemata of word problems.
• Scala; (in our architectures, (1) 2.9.2, (2)Scala version 2.10.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_43) - Scala is a general purpose programming language designed to express common programming patterns using both object-oriented and functional paradigms. Conciseness is a key feature of Scala (scalable language). The prototype employs Scala for constructing, from natural language input, a Prolog program that can solve the problem.

In addition, the system requires the availability of the jpl library for accessing Prolog from Java code. It is installed by the prolog installer, check that the jpl.jar exists and write down the path (It will be needed for the configuration step below).

Project-related software components:

• GF; (in our architecture, version version 3.4 ). GF is used to provide the natural language parsing and generation in the Dialog system.

• gf-java to use the GF web services from Java; (distributed under lib, version gf-java-0.8.1.jar ).

Install all the components as directed. Now configure by passing SWIPL_LIBDIR for the path to the swi-prolog library and JPL_LIBDIR for the path to the directory containing jpl.jar. In our case:

  ./configure SWIPL_LIBDIR=/opt/local/lib/swipl-6.2.2/lib/i386-darwin11.3.0/ JPL_LIBDIR=/opt/local/lib/swipl-6.2.2/lib/

and then build the system

  make