1. 7th November 2005SWPW, Galway, Ireland. SWPW Panel - Policies & Ontologies - Karl Quinn, Knowledge & Data Engineering Group, Trinity College Dublin, Ireland. [slides @ www.karlquinn.com]

2. 7th November 2005 SWPW, Galway, Ireland. Personal Background

3. 7th November 2005 SWPW, Galway, Ireland. Policy & Ontology General Ontological Characteristics –Information to help decision-making –Semantics for reasoning –Communications; explaining agents’ stance –Specialisation of more general models Policy Refinement –‘Process of transforming high level abstract policy specification into low level concrete ones’ –Sloman –Difficult problem; refinement absent, solution needed for real policy use.

4. 7th November 2005 SWPW, Galway, Ireland. Policy & Ontology Policy Refinement Objectives (1)Determine resources needed to satisfy policy requirements Resource description of low level as a model Mapping (abstract entities  concrete objects) (2)Translate high-level policies to enforceable operational policies Policy derivation; cognitive, vocabulary, do’s/don’ts Knowledge to reduce brute force search space (3)Verify lower level policies meet high-level policy requirements Process for correct and consistent decomposition of abstract requirements into concrete ones. In addition: - Subsumption; more/less specialised based on context, navigate over action relationships. - Policy > ECA; look up events, describe actions, not just simple but deontic logic, delegations, etc. P (E i, C i, A i ) P (E ii, C ii, A ii ) EiEi E ii isA

5. 7th November 2005 SWPW, Galway, Ireland. Policy & Ontology Conclude: What are the positives? –User Interface, Specification, Governance. What’s unstable wrt policy & ont? –Conflict detection, No set policy language, Reasoning overheads. Current… –Ontology + Policy = Potential –Solve refinement = build flexible systems.

6. 7th November 2005 SWPW, Galway, Ireland. Karl.Quinn@cs.tcd.ie Thank You Thanks to: Vincent Wade, Declan O’Sullivan, Dave Lewis