Ns2 project in Finland
Ns2 project in Finland besides the issue of parallelism, RPL provides a declarative framework for conflict resolution like that proposed for PARULEL. However, it appears that the attributes of the firing groups used for conflict ns2 project in Finland resolution are hard-coded; there is no actual way of accessing the conflict set itself. Another system related to PARlJLEL is RDL. Although the execution semantics is defined as nondeterministic. choice for rule execution, control can be specified separately from the ns2 project in Finland rules by way of a control language based upon regular expressions.
In early work , one of the authors defined a rule language controlled by a separate control language based upon regular expressions, that specified sequential, repetitive , alternative, and permutable ns2 project in Finland rule executions. Although useful, the approach had a major problem in practice. Occasionally the control expression being followed required the execution of a ns2 project in Finland rule that had no instantiations. Ultimately, metarules were defined to resolve these “control conflicts”, which then quickly subsumed the entire regular expression language, metarules provided sufficient specification of c,ontrol.
As we have noted, there is of ns2 project in Finland course the problem with strict specification of control sequences by way of rule names. It is impossible to specify control on the basis of data matched by rules, nor can ns2 project in Finland one specify control between instances of the same rule. PARULE’L’s metarules ameliorate these problems. PARULEL programs consist of a set of object-level rules which are matched against base relations and a set of metarules that specify control ns2 project in Finland of rule execution by way of inhibiting the firing of rule instances. There are several issues related to the overall rule system that is relevant to efficient ns2 project in Finland matching of metarules, which we describe below.