UPSgraph {USPS}R Documentation

Display Sensitivity Analysis Graphic in Unsupervised Propensiy Scoring

Description

Plot summary of results from multiple calls to UPSnnltd() and/or UPSivadj() after an initial setup call to UPSaccum(). The UPSgraph() plot displays any sensitivity of the LTD and LOA Distributions to choice of Number of Clusters in X-space.

Usage

  UPSgraph(nncol = "red", nwcol = "green3", ivcol = "blue", ...)

Arguments

nncol optional; string specifying color for display of the Mean of the LTD distribution when weighted by cluster size from any calls to UPSnnltd().
nwcol optional; string specifying color for display of the Mean of the LTD distribution when weighted inversely proportional to variance from any calls to UPSnnltd().
ivcol optional; string specifying color for display of the Difference in LOA predictions, at PS = 100% minus that at PS = 0%, from any calls to UPSivadj().
... Optional parameter(s) passed on to plot().

Details

The third phase of Unsupervised Propensity Scoring is a graphical Sensitivity Analysis that depicts how the Overall Means of the LTD and LOA distributions change with the number of clusters.

Value

NULL

Author(s)

Bob Obenchain <wizbob@att.net>

References

Kaufman L, Rousseeuw PJ. (1990) Finding Groups in Data. An Introduction to Cluster Analysis. New York: John Wiley and Sons.

Obenchain RL. (2004) Unsupervised Propensity Scoring: NN and IV Plots. Proceedings of the American Statistical Association (on CD) 8 pages.

Obenchain RL. (2009) USPSinR.pdf ../R_HOME/library/USPS 40 pages.

Rubin DB. (1980) Bias reduction using Mahalanobis metric matching. Biometrics 36: 293-298.

See Also

UPSnnltd, UPSivadj and UPSaccum.

Examples

  data(lindner)
  UPSxvars <- c("stent", "height", "female", "diabetic", "acutemi", "ejecfrac", "ves1proc")
  UPSharch <- UPShclus(lindner, UPSxvars)
  UPSaccum(UPSharch, lindner, abcix, lifepres, faclev=1, scedas="homo", accobj="ABClife")
  lif001nn <- UPSnnltd(1)
  lif020nn <- UPSnnltd(20)
  lif070nn <- UPSnnltd(70)
  lif120nn <- UPSnnltd(120)

  UPSgraph()

  ABClife

[Package USPS version 1.2-0 Index]