1 Â° The body of a plan can be an action or sequence of actions , a goal or sequence 9 Moore and Paris also note that `` a generation system must maintain the kinds of information outlined by Grosz and Sidner '' ( Moore and Paris 1989 , 203 ) .
planning text for advisory dialogues
Johanna D Moore Cecile Paris
Each matching plan 's preconditions are checked ; if they are currently ( believed to be ) true , the planner then attempts to find all instantiations of the plan 's body . 1 Â° The body of a plan can be an action or sequence of actions , a goal or sequence 9 Moore and Paris also note that `` a generation system must maintain the kinds of information outlined by Grosz and Sidner '' ( Moore and Paris 1989 , 203 ) . Their planner uses plan structures similar to IGEN 's , except that the plan operators they use are generally instantiations of rhetorical relations drawn from Rhetorical Structure Theory ( Mann and Thompson 1987 ) .
1 Â° The body of a plan can be an action or sequence of actions , a goal or sequence 9 Moore and Paris also note that `` a generation system must maintain the kinds of information outlined by Grosz and Sidner '' ( @@CITATION , 203 ) .