Also available as Department of Computer Science Technical Report CU-CS 919-01.
A recurrence plot is a two-dimensional visualization technique for sequential data. These plots are useful in that they bring out correlations at all scales in a manner that is obvious to the human eye, but their rich geometric structure can make them hard to interpret. In this Letter, we suggest that the unstable periodic orbits embedded in a chaotic attractor are a useful basis set for the geometry of a recurrence plot of those data. This provides not only a simple way to locate unstable periodic orbits in chaotic time-series data, but also a potentially useful way to use a recurrence plot to identify a dynamical system.
Full paper in gzipped postscript (1.4MB) and pdf (345KB).
Auxiliary figures available here.