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Medical Roles/Permissions Ontology

Medical Roles/Permissions Ontology. Ping Wang Tetherless World Constellation Rensselaer Polytechnic Institute. Outline. Introduction Research question Approach Related Work Status Hope to learn. Introduction.

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Medical Roles/Permissions Ontology

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  1. Medical Roles/Permissions Ontology Ping Wang Tetherless World Constellation Rensselaer Polytechnic Institute

  2. Outline • Introduction • Research question • Approach • Related Work • Status • Hope to learn

  3. Introduction • Health information technology can allow clinicians to have real-time access to complete patient data, and provide them with support to make the best possible decisions. [1] • The impact of IT on healthcare has so far been modest. [1] http://www.cahealthit.com/

  4. Research question • Achieve fine-grained control of EHRs (Electronic Health Record) via semantic technologies • Fine-grained: roles, the permissions of roles vary from time/place to time/place • Semantic technologies: ontology, reasoner, triple-store

  5. Approach • 1. Survey related works • 2. Use Case Design • 3. Categorize and assimilate data • 4. Design the architecture of the system and the ontologies needed • 5. Implementation of the system • 6. Evaluate the system

  6. Related Work 1: ROWLBAC [2] • ROWLBAC - Representing Role Based Access Control in OWL • Two different ways to support the RBAC(Role Based Access Control) model in OWL. • Approach 1: Roles as Classes • Approach 2: Roles as Values

  7. Advantage of approach1 • queries about a particular access request and queries about a general class of access requests can be answered efficiently using a standard DL reasoner • Advantage of approach2 • the specification is simpler and more concise

  8. Related Work 2: An Analysis of Roles [3] • Gives a broad scope of roles • Roles in ontologies, • ER (Entity Relationship) Modeling, • Object Oriented Modeling, • Agent Oriented Modeling, • Object Process Methodology • Roles VS classes, entities, responsibilities/functions, positions

  9. A context-Centered Approach to Roles • A application: roles in SOP (Standard Operating Procedures) • The sop is for professionals involved in carrying out clinical trials

  10. Related Work 3: RIM [4] • RIM (Reference Information Model) from HL7 • a large, pictorial representation of the HL7 clinical data (domains) • identifies the life cycle that a message or groups of related messages will carry • a shared model between all domains • the model from which all domains create their messages

  11. Critiques • Unclarity: "Act" • Where are diseases • HL7 datastores inaccessible to the DL-based reasoners because of the many ‘flavors of null’.

  12. Status • Have done partial survey • Next steps: • Continue the survey • Determine the scope of the project

  13. Hope to learn • Knowledge modeling via ontologies • Data access rules about HER • More semantic technologies: • rdf, owl, jena, pellet

  14. Reference • [1] President's Council of Advisors on Science and Technology (PCAST) Health Information Technology Report • [2] T. Finin, A. Joshi, L. Kagal, J. Niu, R. Sandhu, W. Winsborough, and B. Thuraisingham, ROWLBAC - Representing Role Based Access Control in OWL, Proceedings of the 13th ACM symposium on Access Control Models and Technologies, ACM Press New York, June 2008. • [3] F. Loebe. An analysis of roles. Technical Report 6, Research Group Ontologies in Medicine, University of Leipzig, 2003. Onto-Med Report. • [4] http://www.hl7.org/implement/standards/rim.cfm • [5] Barry Smith. Ontology Research Group, Buffalo. HL7 RIM.

  15. Thank you! • Questions?

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