一 SSPARC XTOS Attributes (1) 2) 1) Data Life Span 2)Data Altitude 3)Maximum Latitude 4)Time Spent at Equator 2004 2005 5)Data Late (3) (5) SSPARC Utilities What the attributes are Worth to the decision makers” Single attribute utility maps attribute to utility Multi-attribute utility maps an architecture(as expressed by its attributes) to utility ∧ 8 Single Attribute Multi-Attribute Utility fu nction Utility analyDATA Space Systems, Policy, and Architecture Research Consortium 15 (3) (4) (5) (1) (2) 1) Data Life Span 2) Data Altitude 3) Maximum Latitude 4) Time Spent at Equator 5) Data Latency km Km 2004 2005 ©2002 Massachusetts Institute of Technology XTOS Attributes Space Systems, Policy, and Architecture Research Consortium 16 Utilities • • • Single Attribute Utility function 0 1 Good -> Attribute Multi-Attribute Utility analysis 0 1 Good -> Expense ©2002 Massachusetts Institute of Technology “What the attributes are WORTH to the decision makers” Single Attribute utility maps attribute to utility Multi-attribute utility maps an architecture (as expressed by its attributes) to utility 8