ovided for introducing the evidence when the algorithm begins and cleaning it up at the end.</p><div class="fullcomment"><div class="comment cmt"><p>Since probability of evidence algorithms introduce additional evidence (namely, their evidence argument), into an existing universe,
a mechanism must be provided for introducing the evidence when the algorithm begins and cleaning it up at the end. This is achieved
with the initialize method, called when the algorithm starts, and the cleanUp method, called when 