Reference : Outbound SPIT Filter with Optimal Performance Guarantees
Scientific journals : Article
Engineering, computing & technology : Computer science
http://hdl.handle.net/2268/115525
Outbound SPIT Filter with Optimal Performance Guarantees
English
Jung, Tobias mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Réseaux informatiques >]
Martin, Sylvain mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Réseaux informatiques >]
Nassar, Mohamed [INRIA Grand Est > LORIA Research Center > > >]
Ernst, Damien mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Smart grids >]
Leduc, Guy mailto [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Réseaux informatiques >]
Feb-2013
Computer Networks
Elsevier
57
7
1630–1643
Yes (verified by ORBi)
International
1389-1286
[en] VoIP ; online learning ; sequential probability ratio test
[en] This paper presents a formal framework for identifying and filtering SPIT calls (SPam in Internet Telephony) in an outbound scenario with provable optimal performance. In so doing, our work is largely different from related previous work: our goal is to rigorously formalize the problem in terms of mathematical decision theory, find the optimal solution to the problem, and derive concrete bounds for its expected loss (number of mistakes the SPIT filter will make in the worst case). This goal is achieved by considering an abstracted scenario amenable to theoretical analysis, namely SPIT detection in an outbound scenario with pure sources. Our methodology is to first define the cost of making an error (false positive and false negative), apply Wald’s sequential probability ratio test to the individual sources, and then determine analytically error probabilities such that the resulting expected loss is minimized. The benefits of our approach are: (1) the method is optimal (in a sense defined in the paper); (2) the method does not rely on manual tuning and tweaking of parameters but is completely self-contained and mathematically justified; (3) the method is computationally simple and scalable. These are desirable features that would make our method a component of choice in larger, autonomic frameworks.
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/115525
10.1016/j.comnet.2013.02.013
http://dx.doi.org/10.1016/j.comnet.2013.02.013
FP7 ; 224619 - RESUMENET - Resilience and Survivability for future networking: framework, mechanisms, and experimental evaluation

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