jeremyalummitedu jeremy hylton heres clarification first test results using tokenizertokenizertokenize_headers unmodified training 644 hams 557 spams 0000 10413 1398 6104 1398 5027 training 644 hams 557 spams 0000 8259 1242 2873 1242 5745 training 644 hams 557 spams 1398 5206 1398 4488 0000 9336 training 644 hams 557 spams 1553 5206 1553 5027 0000 9874 total false pos 139 539596273292 total false neg 970 435368043088 second test results using mboxtestmytokenizertokenize_headers uses headers except received data xfrom_ training 644 hams 557 spams 0000 7540 0932 4847 0932 3232 training 644 hams 557 spams 0000 7181 0621 2873 0621 4847 training 644 hams 557 spams 1087 4129 1087 3052 0000 6822 training 644 hams 557 spams 0776 3411 0776 3411 0000 6463 total false pos 97 376552795031 total false neg 738 331238779174 jeremy sat 7 sep 2002 161503 0400 spambayes understanding high false negative rate