However, selection based on variance approaches both data sets independently and avoids potential circular arguments.
Principle component analysis (PCA) plot was generated based on variance stabilized expression data in order to separate transcription profiles according to genotype and treatment.
All further analysis was therefore done using the selection of exon array probe sets based on variance as starting data set.
Bolstad, B. M., Irizarry, R. A., Astrand, M. & Speed, T. P. A comparison of normalization methods for high density oligonucleotide array data based on variance and bias.
Based on variance estimates from similar Swedish data on 4-year-olds, we have estimated that the statistical power is approximately 90% to detect a mean BMI unit difference of 0.3 kg/m at four years of age.
As the standard evaluation procedures for motor imagery data contained counter measures already (channel rejection and trial rejection based on variance), and the number of training data was considerably large, the overall influence of artifacts on the motor imagery data set probably was small.
We present a formalism of selective sampling based on data variance, and apply it to a widely used feature selection algorithm Relief.
In practice, it is often possible to estimate one variance value based on data, and then specify the other variances based on the expected variance trend.
The principle of LDA is to form linear combinations which maximize the ratio of the between-class to within-class variance based on the data of the original feature vectors (see, e.g. Venables and Ripley 2002).
Attempts to identify the sources of errors and their contributions to the variance based on signal data, proved to be unsuccessful due to large differences in gene expression levels.
