Resources
4 results for "chaos"
Challenge
Open Access
Is the normal heart rate chaotic?
In its June 2008 issue, the editors of Chaos announced a new feature, "Controversial Topics in Nonlinear Dynamics". The first controversial topic to be aired is "Is the Normal Heart Rate Chaotic?". Since major impediments to achieving consensus on t…
Software
Open Access
A practical method for calculating Lyapunov exponents from small data sets
Detecting the presence of chaos in a dynamical system is an important problem that is solved by measuring the largest Lyapunov exponent. Lyapunov exponents quantify the exponential divergence of initially close state-space trajectories and estimate …
Database
Credentialed Access
CardioWave-Portable: a portable ECG and PPG dataset for cuffless blood pressure estimation
CardioWave-Portable is a controlled-access dataset of synchronized single-lead electrocardiography (ECG) and photoplethysmography (PPG) signals acquired with a portable card-type device and paired with cuff-based systolic and diastolic blood pressur…
Database
Credentialed Access
EchoGraph-annotated ECHO-NOTE2NUM examples
This repository releases the EchoGraph-annotated ECHO-NOTE2NUM dataset, containing 45,794 echocardiography reports with comprehensive entity and relation annotations. Each report from the ECHO-NOTE2NUM dataset has been automatically annotated using …