Goal-directed reasoning with ACE-SSM

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The goal of knowledge-based systems (KBSs) is not only to produce a solution to a problem that these systems face but also to construct - implicitly or explicitly - a situation-specific model (SSM) that explicates the rationale behind that solution. This paper focuses on how KBSs can benefit from the availability of explicit goal knowledge that reflects the underlying structure (ontology) of SSMs constructed for an application task. It first shows how goal knowledge can be captured. Then, it explains how ACE-SSM - an architecture for constructing explicit SSMs - uses this knowledge to direct the construction of explicit SSMs. Finally, it discusses benefits that KBSs can derive from the availability of explicit SSMs and their underlying goal knowledge. Some of these benefits pertain to ways to simplify the construction and maintenance of KBSs through reuse, while others relate to ways to endow KBSs with more robust problem-solving and explanation capabilities. These benefits are illustrated using concrete examples.

Original languageEnglish (US)
Pages (from-to)706-726
Number of pages21
JournalIEEE Transactions on Knowledge and Data Engineering
Issue number5
StatePublished - 1998


  • Goal knowledge
  • Goal-directed reasoning
  • KBS architecture
  • Knowledge-based systems
  • Situation-specific models

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Computational Theory and Mathematics


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