Thanks, it is interesting. I have encountered something related too: http://people.eecs.berkeley.edu/~jrs/papers/robust-predicates.pdf http://people.eecs.berkel

Thanks, it is interesting. I have encountered something related too: http://people.eecs.berkeley.edu/~jrs/papers/robust-predicates.pdf http://people.eecs.berkeley.edu/~jrs/papers/robust-predicate...