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. 2013 Jan 23;8(1):e53943. doi: 10.1371/journal.pone.0053943

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© 2013 Mirshahvalad 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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A For low link weight (), Poisson resampling precisely coincides with article resampling. B,C For medium values of link weight () and high values of link weight (), Poisson resampling underestimates article resampling. The variance of the distribution in article resampling is much higher than in Poisson resampling. For example, for , the variance in article resampling is , while the variance in Poisson resampling is . Similarly, for link weight , the variance in article resampling is , while the variance in Poisson resampling is . The variance in multinomial resampling is quite close to article resampling, which confirms that the multinomial model imitates article resampling and make the distribution broader than Poisson resampling. D The variance of link weights in article resampling and Poisson resampling averaged over all resamples. All points correspond to averaging over 1000 runs.

Inline graphic — A For low link weight (), Poisson resampling precisely coincides with article resampling. B,C For medium values of link weight () and high values of link weight (), Poisson resampling underestimates article resampling. The variance of the distribution in article resampling is much higher than in Poisson resampling. For example, for , the variance in article resampling is , while the variance in Poisson resampling is . Similarly, for link weight , the variance in article resampling is , while the variance in Poisson resampling is . The variance in multinomial resampling is quite close to article resampling, which confirms that the multinomial model imitates article resampling and make the distribution broader than Poisson resampling. D The variance of link weights in article resampling and Poisson resampling averaged over all resamples. All points correspond to averaging over 1000 runs.