• Logic programs with ordered disjunction: First-order semantics and expressiveness 

      Asuncion, Vernon; Zhang, Yan; Zhang, Heng ( AAAI Publications , 2014 , Conference Paper)
      Logic programs with ordered disjunction (LPODs) (Brewka 2002) generalize normal logic programs by combining alternative and ranked options in the heads of rules. It has been showed that LPODs are useful in a number of areas ...
    • Reasoning about Policies in Security-Aware Service Discovery Using Answer Set Programming 

      Asuncion, Vernon; Khan, Khaled M.; Erradi, Abdelkarim; Alhazbi, Saleh ( World Scientific Publishing Co. Pte Ltd , 2016 , Article)
      In order to enable a secure interaction between dynamically discovered software services and the client's application in a cooperative information system such as service oriented system, one of the pre-requisites is the ...
    • Reasoning about security policies of services using answer set programming 

      Asuncion, Vernon; Khan, Khaled M.; Erradi, Abdelkarim; Alhazbi, Saleh ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)
      In this paper, we propose a formal framework for checking the consistency of security policies of services using Answer Set Programming (ASP). We illustrate that the formalisation of security policies of the service providers ...