10. The process of claim 9 , wherein the process action of establishing a set of negative training sub-expressions from the set of transformation programs established from the input-output example in the task comprises designating each sub-expression in the set of transformation programs that is not identified as positive training sub-expression as a negative training sub-expression.
9. The process of claim 5 , wherein the process action of establishing a set of positive training sub-expressions from the set of transformation programs established from an input-output example in a task comprises designating each sub-expression found in the intersection of all sets of transformation programs synthesized from the input-output examples in said task as a positive training sub-expression.