Importance

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Abstract

An e-mail filter employing an adaptive ruleset for classifying received e-mail messages. The individual rules of the ruleset are applied to all or some received e-mail messages, depending on the configuration of the filter. In some embodiments, an initial rule or filter is applied to the message to obtain an initial rating indicating whether the recipient would want the message. Statistics collected for each rule in the ruleset are used to determine a weighted probability the message is wanted. A different weighted probability is obtained if the rule is satisfied or if the rule is not satisfied. A final probability the message is wanted is obtained after applying the filter's adaptive ruleset and using a weighted average to combine that score with any other rules and the message is processed accordingly. Statistics are updated using the machine-generated final probability, so the adaptive ruleset of the filter is constantly updated without requiring user input.

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