1. Towards Drafting a Risk Ontology based on the IRIS Risk Glossary SUMMER ACADEMY Sep 1 st – Sep 4 th 2009 Nick Bassiliades, Dimitris Vrakas Logic Programming & Intelligent Systems group Dept. of Informatics Aristotle University of Thessaloniki

3. RAT Risk Factors Risk Risk Assessment Tool Risk Identification Methodology Risk Management Standard Risk Components Risk Attributes

4. RAT Risk Factor 1 Risk Risk Assessment Tool Risk Identification Methodology Risk Management Standard CBR MBR Risk Factor 2 Risk Factor 3 Risk Factor n …

5. Why do we need Ontologies? All the variables associated with the Risk Assessment Process must be defined in the Risk Ontology(ies) – Inputs to RAT – Outputs of RAT – Past cases or Models – Others Why? – To facilitate integration of risk assessment practices from different domains – To eliminate misunderstandings concerning the use of terms – To allow the use of various ways to describe the same term (synonyms, translations, e.t.c) – To enable the software to reason in a higher level of abstraction (general rules that apply to a group of specific cases)

7. The Ontology Server IRIS Risk Glossary

8. Definition of Risk Risk is a function of probability, exposure and vulnerability. – Often, exposure is incorporated in the assessment of consequences Risk can be considered as having two components – the probability that an event will occur and – the impact (or consequence) associated with that event

9. Class Hierarchy

10. Object Properties Relating Risk to Other Concepts

11. Risk Class Properties

12. Event Properties

13. Probability Properties

14. Consequence Properties

15. Risk Specializations (1/3)

16. Risk Specializations (2/3) There are special cases of risks requiring additional properties – E.g. acceptable risk has an acceptance level property

17. Risk Specializations (3/3) There are special cases of risks imposing restrictions on properties of general concepts – E.g. individual risk has a consequences for a single human

18. Consequence Specializations

19. Human Consequences

20. Individual Human Consequences

21. Multilingual Capabilities (1/2) Concepts in ontology are expressed in English Use of annotation properties (rdfs:label) in classes for expressing the concept in multiple languages

22. Multilingual Capabilities (2/2) More than one synonym terms can be expressed using multiple rdfs:label entries

23. Thank you! Ontology can be found at: http://lpis.csd.auth.gr/ontologies/iris.owl