The metarule and the inference rule approaches have been implemented in
Prolog by Paul Soper. For a description of the implementation see Soper
[1986] or Kowalski, Sadri, and Soper [1987].
Comparison
with
Simplification
Methods
for
Integrity
Checking
The features required for our method, such as rules for deriving implicit dele-
tions,
can be incorporated in proof procedures other than SLDNF. The choice
of SLDNF, however, facilitates the comparison of our method with other al-
gorithms for integrity checking. It is possible to obtain different algorithms
from our method by adopting different strategies for literal selectio ...
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