Hi all, For all you statisticians out there... I'm working on an algorithm for numeric similarity and would like to crowdsource the solution. Given two numbers, i.e., two observations, how can I get a score between -1 and 1 indicating their proximity. I think I need to compute a few things, 1. Compute the mean of the observations.2. Compute the standard deviation sigma of the observations.3. Compute the z-score of each number. Once I know the z-score for each number I knew where each number lies along the normal distribution. After that I'm a little lost. Is there a notion of difference or sameness after that. This might help.. http://www.dkv.columbia.edu/demo/medical_errors_reporting/site010708/module3/0510-similar-numeric.html Your thoughts are appreciated ? Michael Miller.
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