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Erschienen in:
2005 | OriginalPaper | Buchkapitel
Leveraging One-Class SVM and Semantic Analysis to Detect Anomalous Content
verfasst von : Ozgur Yilmazel, Svetlana Symonenko, Niranjan Balasubramanian, Elizabeth D. Liddy
Erschienen in: Intelligence and Security Informatics
Verlag: Springer Berlin Heidelberg
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Experiments were conducted to test several hypotheses on methods for improving document classification for the malicious insider threat problem within the Intelligence Community. Bag-of-words (BOW) representations of documents were compared to Natural Language Processing (NLP) based representations in both the typical and one-class classification problems using the Support Vector Machine algorithm. Results show that the NLP features significantly improved classifier performance over the BOW approach both in terms of precision and recall, while using many fewer features. The one-class algorithm using NLP features demonstrated robustness when tested on new domains.