3.1 Reciprocal Questions
organizations and things, or major subclasses of
QDC also employs the notion of reciprocal ques-
these), we can for each of these classes manually
tions. These are a type of follow-on question used
establish once and for all a set of auxiliary questions
solely to provide constraints, and do not add to the
for QbD and constraints for QDC. This is the ap-
dossier. The idea is simply to double-check the an-
proach we have taken in the experiments reported
swer to a question by inverting it, substituting the
here. We are currently working on automatically
first-round answer and hoping to get the original
learning effective auxiliary questions for some of
subject back. For example, to double-check “Sac-
these classes.
ramento” as the answer to “What is the capital of
In a more ad-hoc situation, we might imagine that
California?” we would ask “Of what state is Sacra-
a simple variety of QDC will be invoked using
mento the capital?”. The reciprocal question would
solely reciprocal questions whenever the difference
be asked of all of the candidate answers, and the
between the scores of the first and second answer is
confidences of the answers to the reciprocal ques-
below a certain threshold.
tions would contribute to the selection of the opti-
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