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. 2013 Feb 20;8(2):e55349. doi: 10.1371/journal.pone.0055349

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© 2013 Meckenhäuser et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Model of size four (light gray), three (dark gray), and two (black edging) are ranked top ten. The overall best performing model uses the pulse period, chirp duration, and chirp duty cycle. The best 2-feature model (pulse period and chirp pause) did not perform significantly different ( for a two-sided Wilcoxon rank-sums test; significance level of 0.01). The best 4-feature model (pulse duration, pulse pause, chirp duration, and chirp period) performed significantly worse than the best 3-feature model ( for a two-sided Wilcoxon rank-sums test). Abbreviations: Pdur - pulse duration, Ppau - pulse pause, Pper - pulse period, Pdc - pulse duty cycle, Cdur - chirp duration, Cpau - chirp pause, Cper - chirp period, Cdc - chirp duty cycle. The models were validated 100 times and errorbars indicate standard deviation.

Inline graphic — Model of size four (light gray), three (dark gray), and two (black edging) are ranked top ten. The overall best performing model uses the pulse period, chirp duration, and chirp duty cycle. The best 2-feature model (pulse period and chirp pause) did not perform significantly different ( for a two-sided Wilcoxon rank-sums test; significance level of 0.01). The best 4-feature model (pulse duration, pulse pause, chirp duration, and chirp period) performed significantly worse than the best 3-feature model ( for a two-sided Wilcoxon rank-sums test). Abbreviations: Pdur - pulse duration, Ppau - pulse pause, Pper - pulse period, Pdc - pulse duty cycle, Cdur - chirp duration, Cpau - chirp pause, Cper - chirp period, Cdc - chirp duty cycle. The models were validated 100 times and errorbars indicate standard deviation.