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sscore (version 1.44.0)

OneStepBiweightAlgorithm: One-step Tukey's biweight

Description

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.

Usage

OneStepBiweightAlgorithm(x, c, epsilon)

Arguments

x
vector of data
c
tuning constant (see details)
epsilon
fuzz value to avoid division by zero (see details)

Value

A numeric value

Details

The details can be found in the given reference.

References

Affymetrix (2002) Statistical Algorithms Description Document, Affymetrix Inc., Santa Clara, CA, whitepaper. http://www.affymetrix.com/support/technical/whitepapers/sadd_whitepaper.pdf