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Towards Practical PPM Spam Filtering: Experiments for the TREC 2006 Spam Track

Category: Security

Tags: spam, applications

Overview This paper summarizes the participation in the TREC 2006 spam track. They submitted a single filter for the evaluation, based on the Prediction by Partial Matching compression scheme, a method that performed well in the previous TREC evaluation. A major focus of their effort was to improve efficiency of the method, particularly in terms of memory consumption, in order to establish whether compression-based filters are in fact a viable solution for practical applications. Their system exhibited fair performance, despite the fact that the filtering techniques remained virtually unchanged from the previous evaluation. They did not investigate methods for tackling delayed user feedback. A very simple strategy of training on most recent examples was used for the active learning task, and found to work surprisingly well given its simplicity.

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Publisher
Jozef Stefan Institute
File Format
PDF
Date Published
Jul 1, 2009
Format
White Papers
Topics
Spam - E-mail Fraud - Phishing, Network Security

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