String acceptorProp =
properties.getProperty(DEPENDENCY_ACCEPTOR_PROPERTY);
acceptor = (acceptorProp != null)
? (DependencyRelationAcceptor)
ReflectionUtil.getObjectInstance(acceptorProp)
: new UniversalRelationAcceptor();
// Set up the generator vector maps.
RandomIndexVectorGenerator indexVectorGenerator =
new RandomIndexVectorGenerator(vectorLength, properties);
indexMap = new GeneratorMap<TernaryVector>(indexVectorGenerator);