Abstract
In this paper, the evolutionary neural trees (ENT) are
applied to forecasing the highfrequency stock returns
of Heng-Sheng stock index on December, 1998. To
understand what may consistute an effective
implementation, six experiments are conducted. These
experiments are different in data-preprocessing
procedures, sample sizes, search intensity and
complexity regularization. Our results shows that ENT
can perform more efficiently if we can associate ENT
with a linear filter so that it can concentrate on
searching in the space of nonlinear signals. Also, as
well demonstarted in this study, the infrequent bursts
(outliers) appearing in the high-frequency data can be
very disturbing for the normal operation of ENT.
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