1. Distributed Assessment of Risk Tool DART
Courtesy Jesal Bhuta and Chris Patel
{CS 577a, Fall 2005}
Augmented by Winsor Brown
{CS 577a, Fall }

2. Outline Risk Management – Recap Introduction to DART
Introduction to Test Project
DART Demonstration
Sep 2007
© USC-CSSE

3. “Risk”: Possibility of loss or injury
Defining Risk
“Risk”: Possibility of loss or injury
-Webster
Risk Exposure =
(Probability of unsatisfactory outcome) X
(Loss due to unsatisfactory outcome)
RE = P[UO] x L[UO]
Sep 2007
© USC-CSSE

4. “If you don’t Actively attack the Risks,”
Sep 2007
© USC-CSSE

5. “The Risks [grow-up] Will Actively Attack You”
-Tom Gilb
Sep 2007
© USC-CSSE

6. Importance of Risk Management
Addresses Complex Software Systems
Focuses Projects on Critical Risk Items
Provides Techniques for Handling Risk Items
Reduces Software Costs by Reducing Rework
Usually 40-50% of software costs
Sep 2007
© USC-CSSE

7. Outline Risk Management – Recap Introduction to DART
DART Demonstration
Sep 2007
© USC-CSSE

8. Risk Assessment Role in Each Life-Cycle Phase
Objectives
Cost
Schedule
Function
Operation
Support
Reuse
Alternatives
Physical Architecture
Logical Architecture
COTS Software
Reused Software
Special Software
Evaluate Alternatives W.R.T Objectives
ID Potential High-Risk Areas
No Alternatives Satisfy Objectives
Major Satisfaction Uncertainty
Analyze Risk Items (DART - partially)
Prioritize Risk Items (DART)
Revised
Objectives
Subset of Alternatives
Risk
Management
Plan (RMP)
Prioritized
Risk Items
Models,
Analysis Aids
Risk ID
Checklist,
Techniques
Sep 2007
© USC-CSSE

9. DART System
Sep 2007
© USC-CSSE

10. Need for DART – Spatial Distribution
Architect - Leavy
Tester – OHE 122
Client – Health Science Campus
Risk assessment meeting
IV&V - Downtown LA
Developers - SAL
Project Manager - Home
Sep 2007
© USC-CSSE

11. Need for Dart – Spatial and Temporal Distribution
Client
Testers
Software Contractor
Hardware Vendors
Architects
Developers
Sep 2007
© USC-CSSE

12. Need for DART Spatially and Temporally distributed stakeholders
Difficult for the stakeholders to get together to assess risks frequently
Need a tool to maintain, and help prioritize risks periodically
Sep 2007
© USC-CSSE

13. Dart Snapshot
Sep 2007
© USC-CSSE

14. Outline Risk Management – Recap Introduction to DART
DART Demonstration
Sep 2007
© USC-CSSE