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Table 1 Four publicly-accessible sets of clinical data are selected for evaluation

From: Automatic online detection of atrial fibrillation based on symbolic dynamics and Shannon entropy

Databases

f s

Total beats

Brief description

 

(Hz)

(AF beats)

 

LTAFDB

128

8996056

It consists of 84 long-term (typically 24 to 25 hours) ECG

  

(5326145)

recordings of subjects with paroxysmal or sustained AF.

AFDB

250

 

It contains 25 long-term (10 hours) ECG recordings of subjects

  

1221574

with AF (mostly paroxysmal). Of which raw ECG data of two

  

(519687)

records (“00735” and “03665”) are not available, and two

   

records (“04936” and “05091”) include many incorrect reference annotations

MITDB

360

109590

It is a collection of 48 half-hour two-lead recordings which were

  

(11496)

arrhythmia obtained from 47 subjects and contains affluent

   

information, such as AF and AFL

NSRDB

128

1729523

It includes 18 long-term records of subjects. Each recording is

  

(0)

about 24 hours in duration. These records had no significant

   

arrhythmias detected in this database