Pychinko

"Pychinko is a Python implementation of the classic Rete algorithm (see Forgy82 for original report.) Rete (and its since improved variants) has shown to be, in many cases, the most efficient way to apply rules to a set of facts--the basic functionality of an expert system. Pychinko employs an optimized implemention of the algorithm to handle facts, expressed as triples, and process them using a set of N3 rules. We've tried to closely mimic the features available in CWM, as it is one of the most widely used rule engines in the RDF community. Several benchmarks have shown our Rete-based Pychinko to be upto 5x faster than the naive rule application used in CWM (see presentation below for preliminary results.) A typical use case for Pychinko might be applying the RDFS inference rules, available in N3, to a document. Similar rules are available for XSD and a dialect of OWL."