Abstract: This paper reports research concerning issues involved in adopting a
computational dialectics approach to develop a human-computer dialogue system
for educational debate. In particular, we propose a dialogue model and a set of
computationally usable strategic heuristics to enable the computer to engage
its users in debate on a controversial issue. The system operationalising the
proposed dialogue model and strategy has been fully implemented. It has also
been subject to initial evaluation exercises. The results of the evaluation are
essentially favourable. It is anticipated that the work reported in this paper
will contribute toward the development of human-computer dialogue in general
and of computer-based educational debate in particular, and help to illuminate
research issues in the field of dialectics itself.