Abstract: . . .  cardiology challenge 2004. URL=http://www.physionet.org/challenge/2004/, October 2003. [6] L. R. Rabiner and B. H. Juang. Fundamentals of Speech Recognition . PrenticeHall, 1993. [7] I Savelieva and A. John Camm. Atrial pacing for the prevention and termination of atrial fibrillation . Am J Geriatr Cardiol , 11(6):380398, 2002. 7 Page 9 Record Closest Second Third s01 t01 0.1118 s07 3.5054 t08 3.6134 s02 t02 0.0329 t05 0.4165 s05 0.4851 s03 t03 0.1488 s09 0.7625 t09 . . .
. . .  cardiology challenge 2004. URL=http://www.physionet.org/challenge/2004/, October 2003. [6] L. R. Rabiner and B. H. Juang. Fundamentals of Speech Recognition . PrenticeHall, 1993. [7] I Savelieva and A. John Camm. Atrial pacing for the prevention and termination of atrial fibrillation . Am J Geriatr Cardiol , 11(6):380398, 2002. 7 Page 9 Record Closest Second Third s01 t01 0.1118 s07 3.5054 t08 3.6134 s02 t02 0.0329 t05 0.4165 s05 0.4851 s03 t03 0.1488 s09 0.7625 t09 0.8337  . . .
. . .  each record using a multi-dimensional Gaussian model with a diagonal covariance matrix. We can then calculate the distance between each pair of models and hence each pair of records using the Kullback-Liebler (KL) distance. The KL distance KL(f, g) between pdfs f and g describes the information lost when pdf g is used to approximate pdf f. It is defined as KL(f, g) = f(x) log(f(x)/g(x))dx (3) which has a closed form solution for Gaussian models. 6 Part II: results To test our approach, we model each record in Groups S and T of the learning . . .
. . .  George Moody. Computers in cardiology challenge 2004. URL=http://www.physionet.org/challenge/2004/, October 2003. [6] L. R. Rabiner and B. H. Juang. Fundamentals of Speech Recognition . PrenticeHall, 1993. [7] I Savelieva and A. John Camm. Atrial pacing for the prevention and termination of atrial fibrillation . Am J Geriatr Cardiol , 11(6):380398, 2002. 7 Page 9 Record Closest Second Third s01 t01 0.1118 s07 3.5054 t08 3.6134 s02 t02 0.0329 t05 0.4165 s05 0.4851 . . .
. . .  t05 0.7808 t08 s08 0.3097 t03 1.2989 s06 1.5680 t09 s09 0.0613 t03 0.7371 s03 0.8337 t10 s10 0.1254 s04 0.7218 t04 0.7316 Table 3: The results of calculating the KL distance between pairs in Groups S and T. In the columns next to each record are the record name and KL distance of the three closest records. b01 ? b03 b05 ? b19 b10 ? b15 b14 ? b16 b02 ? b07 b06 ? b17 b11 ? b18 b04 ? b13 b08 ? b09 b12 ? b20 Table 4: Record pairs in Test Set B according to the KL distance. 8  . . .
--3000,5,300,3309,19141