Using conditional entropy to identify periodicity

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Abstract

This paper presents a new period-finding method based on conditional entropy that is both efficient and accurate. We demonstrate its applicabilityon simulated and real data. We find that it has comparable performance to other information-based techniques with simulated data but is superior with real data, both for finding periods and for just identifying periodic behaviour. In particular, it is robust against common aliasing issues found with other period-finding algorithms. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.

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Graham, M. J., Drake, A. J., Djorgovski, S. G., Mahabal, A. A., & Donalek, C. (2013). Using conditional entropy to identify periodicity. Monthly Notices of the Royal Astronomical Society, 434(3), 2629–2635. https://doi.org/10.1093/mnras/stt1206

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