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Some colleagues are using 'normalized' K-L divergence to measure deviation of unit-area histogram (pseudo discrete pdf) from corresponding uniform distribution ($N$ equal-length bins). Maybe it is better to use true metric like sqrt of J-S?

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For what purpose? – whuber♦ Oct 17 '11 at 20:52
K-L stands for Kullback-Leibler and J-S for Jensen-Shannon, I suppose? – cardinal Oct 17 '11 at 23:28
To try to quantify the phase-amplitude coupling of neuronal oscillations of different frequencies, by first binning average higher frequency Amplitudes over N lower frequency Phase bins and measuring deviation from corresponding Uniform distribution. Hopefully a tool to help identify transition from preictal to ictal state/seizure onset. And, yes, that's what K-L and J-S stand for. – Dick Robertson Oct 18 '11 at 6:28

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