OneStepBiweightAlgorithm {sscore} | R Documentation |
Computes one-step Tukey's biweight on a vector. Note that this implementation follows the Affymetrix code, which is different from the Tukey's biweight computed by the affy package.
OneStepBiweightAlgorithm(x, c, epsilon)
x |
vector of data |
c |
tuning constant (see details) |
epsilon |
fuzz value to avoid division by zero (see details) |
The details can be found in the given reference.
A numeric value
Based on Affymetrix MAS5 Statistical SDK source code http://www.affymetrix.com/Auth/support/developer/stat_sdk/STAT_SDK_source.zip
Richard Kennedy rkennedy@vcu.edu
Affymetrix (2002) Statistical Algorithms Description Document, Affymetrix Inc., Santa Clara, CA, whitepaper. http://www.affymetrix.com/support/technical/whitepapers/sadd_whitepaper.pdf