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Researchers studying computer networks rely on the availability of traffic trace data collected from live production networks. Those choosing to share trace data with colleagues must first remove or otherwise anonymize sensitive information. This process, called sanitization, represents a tradeoff between the removal of information in the interest of identity protection and the preservation of data within the trace that is most relevant to researchers. While several metrics exist to quantify this privacy-utility tradeoff, they are often computationally expensive. Computing these metrics using a sample of the trace, rather than the entire input trace, could potentially save precious time and space resources, provided the accuracy of these values does not suffer.
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