Chaos challenge database
Oct. 30, 2008
The journal Chaos will publish a special issue containing discussion of the question "Is the normal heart rate chaotic?" in 2009. To provide a common focus for investigation of this question, a collection of fifteen 20-24 hour RR interval time series derived from three PhysioBank ECG databases is now available for study.
Read more: https://physionet.org/challenge/chaos/