Message-ID: <CAJ6JbR-oSh_s6LFWt8vhEkOm7h9LhPjOUcsBYu+kX_h0bhNjBQ@mail.gmail.com>
Date: 2012-05-31T22:20:35Z
From: gianni lavaredo
Subject: function to calculate a SMAPE (Symmetric mean absolute percentage error) to avoid the possibility of an inflation caused by zero values in the series
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