Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
    Stat Appl Genet Mol Biol. 2010;9:Article29. doi: 10.2202/1544-6115.1434. Epub 2010 Aug 6.

    Generalizing moving averages for tiling arrays using combined p-value statistics.

    Source

    University of Colorado Denver, CO, USA. katerina.kechris@ucdenver.edu

    Abstract

    High density tiling arrays are an effective strategy for genome-wide identification of transcription factor binding regions. Sliding window methods that calculate moving averages of log ratios or t-statistics have been useful for the analysis of tiling array data. Here, we present a method that generalizes the moving average approach to evaluate sliding windows of p-values by using combined p-value statistics. In particular, the combined p-value framework can be useful in situations when taking averages of the corresponding test-statistic for the hypothesis may not be appropriate or when it is difficult to assess the significance of these averages. We exhibit the strengths of the combined p-values methods on Drosophila tiling array data and assess their ability to predict genomic regions enriched for transcription factor binding. The predictions are evaluated based on their proximity to target genes and their enrichment of known transcription factor binding sites. We also present an application for the generalization of the moving average based on integrating two different tiling array experiments.

    PMID:
    20812907
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2942027
    Free PMC Article

    Images from this publication.See all images (6)Free text

    Figure 2:
    Figure 4:
    Figure 6:
    Figure 1:
    Figure 3:
    Figure 5:

      Supplemental Content

      Icon for iFactory Icon for PubMed Central

      Save items

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk