Least Squares Quantization in PCM by Stuart P. Lloyd (source code)

= Least Squares Quantization in PCM by Stuart P. Lloyd
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https://doi.org/10.1109/TIT.1982.1056489

IEEE Transactions on Information Theory 28(2), 129–137 (1982). Original paper byline and scalar nearest-representative/conditional-mean optimality conditions. Primary scan: https://web.stanford.edu/class/ee398a/handouts/papers/Lloyd%20-%20Least%20Squares%20Q%20in%20PCM.pdf