Description Usage Arguments Details Value References Examples
Get the difference between two conditions. Apply Kernel smoothing to fit a smooth curve. Estimate variance for each gene and improve the estimation of variance based on all the genes. Derive test statistics and get the rank list of all the genes.
1 |
data |
difference matrix between two conditions |
band |
bandwidth used in kernel smoothing |
quantile |
threshold used in variance estimation |
Note 1: Need to chose a bandwidth. Do not recommend to use cross validation (not gene-specific bandwidth) but chose a fixed biological meaningful bandwidth. A fixed bandwidth which can capture the signal profile and smooth out noise would be recommend. The bandwidth used in reference is 20/280.
Note 2: quantile value is based on the distribution of variance estimation of each gene. Recommend to use histogram to double check the distribution. Default 0.9 = 90 %
TS |
Kernel based test statistics after WH transformation. Please refer the details in the reference |
TS_sign |
"+" represent for condition B enriched more than condition A; "-" vice versa |
Tmean |
Original test statistics, which is calculated as integral of square of kernel estimator |
Qian Wu, Kyoung-Jae Won and Hongzhe Li. (2015) Nonparametric Methods for Identifying Differential Enrichment Regions with ChIP-seq Data. Cancer Informatics,14 (Suppl 1), 11-22
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