Sentence examples for using a variance filtering from inspiring English sources

We identified genes from the CSR profiles that were expressed in normal tissue (Additional files 6 (panel D) and 7) using a variance filtering criteria (see Materials and methods).

Arrays were then background corrected and normalized using the GCRMA function, and then filtered to remove genes in the lowest 10% of variance using a variance filter.

A standard unsupervised hierarchical cluster analysis (HCA), after using a variance filter with a cut-off value of 50% of the highest standard deviating genes to limit the number of probes and a Pearson correlation test [ 20] for average linkage clustering, was used to investigate similarities and differences in global gene and miRNA expression patterns among disomy 8, trisomy 8, and references.

Normalized data were further processed using a variance and intensity filter.

All subsequent data analysis procedures were also performed in R. Data were normalised using GCRMA and filtered using a variance of ⩾0.1.

Non-expressed and invariant transcripts were removed using a median variance filter, corrected by a Benjamini-Hochberg false discovery rate (FDR) of 0.10 [ 32], resulting in a final dataset of 11950 transcript measurements across 217 samples.

With these performance indices, the optimal gains of the PVM α- β- γ filters are determined using a minimum-variance filter criterion.

Kuo et al. made a limited but similar attempt to reduce noise by using what they termed a "variance filter" [ 4].

To enrich the neighborhood for genes with informative data we used a simple variance filter in which neighbors in L having less than a 0.10 standard deviation in the rank-ratio-transformed expression data were excluded.

Further analysis was conducted using Nexus Expression 2.0 (BioDiscovery, El Segundo, CA, USA) using log2-transformed, normalized expression values and a variance filter.

The threshold (9) is an approximate way to separate a subset of unregulated (null) features: (11) d 0 μ : log 2 v T < L V Th μ, and can be used as a boundary to set up a variance filter.