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Department of Computer Science and Technology

Date: 
Tuesday, 18 January, 2022 - 14:00 to 15:00
Speaker: 
Federico Barbero, University of Cambridge
Venue: 
Webinar - link on talks.cam page after 12 noon Tuesday
Abstract: 

Machine learning for malware classification shows encouraging results, but real deployments suffer from performance degradation as malware authors adapt their techniques to evade detection. This phenomenon, known as concept drift, occurs as new malware examples evolve and become less and less like the original training examples. One promising method to cope with concept drift is classification with rejection in which examples that are likely to be misclassified are instead quarantined until they can be expertly analyzed.

In this talk, I will discuss our IEEE S&P 2022 paper which proposes TRANSCENDENT, a rejection framework built on Transcend, a recently proposed strategy based on conformal prediction theory. In particular, I will hold your hand through the formal treatment of Transcend and the newly proposed conformal evaluators, with their different guarantees and computational properties. TRANSCENDENT outperforms state-of-the-art approaches while generalizing across various malware domains and classifiers. These insights support both old and new empirical findings, making Transcend a sound and practical solution for the first time.

RECORDING : Please note, this event will be recorded and will be available after the event for an indeterminate period under a CC BY -NC-ND license. Audience members should bear this in mind before joining the webinar or asking questions.

Seminar series: 
Security Seminar

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