ns2 project in Germany
ns2 project in Germany all instances might have to be comrnunicated to one site that computes the aggregate function against the set of instances. Of course, it ns2 project in Germany may be possible to compute the aggregate function in parallel among the sites if the function in question is associative and commutative. But one cannot determine ns2 project in Germany apriori what a metarule programmer might actuallyspecify .
Object level rule matching may be lazy, as in LEAPS , or eager as in PARULEL and SOAR . In the case of lazy evaluation, one would expect the matcher to produce the instances that would ns2 project in Germany be fired after metarule redactions without generating the instances that would be redacted. However, this is impractical, since for an instance to be redacted, it must be matched and bound in the LHS of a metarule and participate in conditional expressions between ns2 project in Germany other rule instances. Indeed, a single instance may participate in many different metarules and thus may be matched against a number of instances generated ns2 project in Germany by different object-level rules.
This implies that the “redactable instances” must ns2 project in Germany be generated and tested in the LHS of the metarule along with other rule instances. Thus, lazy evaluation is not an appropriate evaluation strategy since it seeks to generate only one instance at a time. Furthermore, for languages with set-oriented semantics, lazy ns2 project in Germany evaluation would necessarily require repeated invocation to generate a stream of instances to saturation before proceeding to fire those instances, i.e., lazy evaluation ns2 project in Germany would be a step in the most inner loop of an eager evaluation computation.