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This research comparatively evaluates four competing clustering algorithms for thematically clustering digital forensic text string search output. It does so in a more realistic context, respecting data size and heterogeneity, than has been researched in the past. In this study, we used physical-level text string search output, consisting of over two million search hits found in nearly 50,000 allocated...
This research extends text mining and information retrieval research to the digital forensic text string search process. Specifically, we used a self-organizing neural network (a Kohonen Self-Organizing Map) to conceptually cluster search hits retrieved during a real-world digital forensic investigation. We measured information retrieval effectiveness (e.g., precision, recall, and overhead) of the...
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