The following list describes changes planned for the next version of R2ML:

• Some renaming:
  • Where no role/property name is available on an association end, the corresponding XML attribute will be named like the class it refers to (with no "ID" suffix).
  • The role "producedAction" in ReactionRule is renamed into "triggeredActionExpr"
  • The attribute "typeCategory" in "Term" is renamed into "termTypeCategory"
  • Enumerations are renamed such that their name ends with "...EnumerationLiteral". This concerns, e.g., the enumerations "CollectionTypes" and "PredicateType", which will be renamed into "TermTypeCategoryEnumerationLiteral" and "PredicateTypeEnumerationLiteral"
  • ActionExpression to be renamed into SystemActionExpression
• Add an "agnostic" negation symbol in the form of the non-abstract concept "Negation" as a superconcept of "StrongNegation" and "NegationAsFailure".
• A rulebase (and rulesets?) may include a factbase and one or more references to external factbases.
• Derivation-rule-based definitions may be partial or complete.
• Atoms (and rules?) may have a degree of uncertainty as a special case of a generic qualification feature.
• Actions may include SequenceActionExpression as an ordered list of atomic actions
• Improved EventExpression metamodel
• New AtomicEventExpr metamodel
• New Event metamodel
• Revised ProductionRule metamodel
• Revised ActionExpression metamodel
• The Actions package will become a subpackage of Events
• EventType will be moved from the Events package to the Vocabulary::Basic package as a subclass of Class
• role value from DataSlot will become dataValue
• Operation with optional arguments
• languageTag in data literals must be optional.
• CreateActionExpression will have ObjectName as contextArgument.