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 2004-01-02, 01:04 #2 GP2     Sep 2003 A1516 Posts good = verified good results bad = verified bad results uv2 = results needing a 2nd check uv3 = results needing a 3rd or higher check uv3h = uv3 results that also had a "harmful" error code Code: uv3h uv3 uv2 bad good user ID/computer ID ---- --- --- --- ---- ------------------- uv3h is significant because if you have a lot of triple checks pending, it could be because your computer is bad, or it could be your computer is good but you did a lot of double-checking of error-prone machines. A high ratio of uv3h/uv3 would probably indicate a bad machine, whereas a low ratio might be a sign that it's a machine that did a lot of double-checking of error-prone machines. See for instance GW/P4-2000, which 42 triple-checks pending (uv3) but 0 of them with harmful error codes (uv3h). Right now, for purposes of doing early double-checking, an error-prone machine has to have >= 0.333 error rate -- bad/(bad+good) -- and bad >=2 to avoid statistical flukes. Next time we do an early error-prone-checking release, I'll come up with a proposal to identify exponents based on uv3h with data to back it up.