Time-series - A powerful method to analyze non-linear patterns, even in very small data

Update:

SpringerLink

Combinatorial time-loops: probabilistic inference on time-series based on...

Recurrence quantification analysis (RQA) is inspired by Poincaré’s early studies and describes non-linear characteristics of dynamical systems. It achieves this by identifying similarities between states, pairing each observation with every other....

The white-paper outlining this framework was developed and published in an issue of the * The European Physical Journal

It is a nice approach for time-series in which one cannot rely on asymptotic assumptions and want to use exact methods.