We show in detail how to determine the time-reversed representation of a
stationary hidden stochastic process from linear combinations of its
forward-time ϵ-machine causal states. This also gives a check for the
k-cryptic expansion recently introduced to explore the temporal range over
which internal state information is spread.Comment: 6 pages, 9 figures, 2 tables;
http://users.cse.ucdavis.edu/~cmg/compmech/pubs/iacplcocs.ht