Hello John,

Monday, January 26, 2004, 5:10:32 AM, you wrote:

JW> It struck me that since individual tripwire rules are at risk of FPs,
JW> but that multiple tripwire hits on the same message are much less so,
JW> it might be worthwhile assigning a significantly higher score to
JW> messages that hit lots of tripwire rules.

JW> Since there are so many rules involved, I've created a set of
JW> intermediate meta rules, as follows:

Section 3 -- Frequencies Log
(First numeric frequencies, followed by percentage frequencies)

OVERALL     SPAM      HAM     S/O   SCORE  NAME
  97268    79437    17831    0.817   0.00    0.00  (all messages)
  27897    27881       16    0.997   1.00   1.00  local_META_TRIPWIRE_2
  20596    20594        2    1.000   0.90   1.00  local_META_TRIPWIRE_5
  10116    10115        1    1.000   0.64   3.00  local_META_TRIPWIRE_10
  34514    34250      264    0.967   0.00   1.00  local_META_TRIPWIRE_1

OVERALL%   SPAM%     HAM%     S/O    RANK   SCORE  NAME
  97268    79437    17831    0.817   0.00    0.00  (all messages)
100.000  81.6682  18.3318    0.817   0.00    0.00  (all messages as %)
 28.681  35.0983   0.0897    0.997   1.00    1.00  local_META_TRIPWIRE_2
 21.174  25.9249   0.0112    1.000   0.90    1.00  local_META_TRIPWIRE_5
 10.400  12.7334   0.0056    1.000   0.64    3.00  local_META_TRIPWIRE_10
 35.483  43.1159   1.4806    0.967   0.00    1.00  local_META_TRIPWIRE_1

Results look good here.

Bob Menschel





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