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Open Access Correction

Permutation test for periodicity in short time series data

Andrey A Ptitsyn1*, Sanjin Zvonic2 and Jeffrey M Gimble2

Author Affiliations

1 Center for Bioinformatics, Colorado State University Campus delivery 1682 Fort Collins, CO 80523, USA

2 Stem Cell Laboratory, Louisiana State University System Pennington Biomedical Research Center, 6400 Perkins Rd., Baton Rouge, LA 70808, USA

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BMC Bioinformatics 2007, 8:395  doi:10.1186/1471-2105-8-395

The electronic version of this article is the complete one and can be found online at: http://www.biomedcentral.com/1471-2105/8/395


Received:17 October 2007
Accepted:17 October 2007
Published:17 October 2007

© 2007 Ptitsyn et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Correction

In our paper reporting the permuted-time test for periodicity [1], the table in Figure 4 and the text of the Discussion should be modified as follows: The % of genes detected by Tu et al. [2] should be reported as 57.2% rather than 38.1% as currently reported; thus the difference between the methods should be reduced (to 84.7% vs. 57.2%). The discrepancy results from the fact that the absolute number of 3552 transcripts was identified from a smaller subset of pre-selected expression profiles corresponding to known yeast genes, while the Pt-test was applied to the entire set of probesets. We would like to thank two of the co-authors of the Tu et al. [2] publication, Drs. Rowicka and Kudlicki (UT-Southwestern), for bringing this to our attention.

References

  1. Ptitsyn AA, Zvonic S, Gimble JM: Permutation test for periodicity in short time series data.

    BMC Bioinformatics 2006, 7(Suppl 2):S10. PubMed Abstract | BioMed Central Full Text | PubMed Central Full Text OpenURL

  2. Tu BP, Kudlicki A, Rowicka M, McKnight SL: Logic of the yeast metabolic cycle: temporal compartmentalization of cellular processes.

    Science 2005, 310(5751):1152-1158. PubMed Abstract | Publisher Full Text OpenURL