Spam discrimination by generalized Ngram analysis of small...

Details Spam discrimination by generalized Ngram analysis of small... Spam discrimination by generalized Ngram analysis of small...

2004-05-06

2009-06-30

Vaughn, Jr., William C (Department: 2444)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Demand based messaging

C709S213000, C709S224000

Reexamination Certificate

active

07555523

ABSTRACT:
In the method of the present invention, spam is detected by extracting generalized Ngrams from a section of an e-mail (104). A spam manager (101) extracts (502) a sequence of characters from a section of an email. The spam manager (101) iterates (504) subsequences within the sequence. The spam manager (101) compares (506) subsequences to collections of spam-distinguishing subsequences to identify spam e-mail (104) messages.

REFERENCES:
patent: 6144934 (2000-11-01), Stockwell et al.
patent: 6952719 (2005-10-01), Harris
patent: 2004/0167968 (2004-08-01), Wilson et al.
patent: 2004/0260776 (2004-12-01), Starbuck et al.
patent: 2005/0120019 (2005-06-01), Rigoutsos et al.
patent: 2005/0193073 (2005-09-01), Mehr et al.
patent: 2005/0262209 (2005-11-01), Yu

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