UFO is a new implementation of FORMAN, a declarative monitoring language, in which rules are compiled into execution monitors that run on a virtual machine supported by the Alamo monitor architecture. FORMAN’s event trace model uses precedence and inclusion relations to define a DAG structure that abstracts execution behavior. Compiling FORMAN rules into hybrid run-time/post-mortem monitors giv...

M L Cartman, A C Hatfield, M F Muers, M D Peake, R A Haward, D Forman on behalf of the Yorkshire Cancer Management Study Group, Northern and Yorkshire Cancer Registry and Information Service, UK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...