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Least squares quantization in PCM

It has long been realized that in pulse-code modulation (PCM), with a given ensemble of signals to handle, the quantum values should be spaced more closely in the voltage region...

1982 IEEE Transactions on Information Theory 14858 citations

An Analysis of Transformations

Summary In the analysis of data it is often assumed that observations y 1, y 2, …, yn are independently normally distributed with constant variance and with expectations specifi...

1964 Journal of the Royal Statistical Soci... 14698 citations