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hddplot (version 0.59-2)

Use Known Groups in High-Dimensional Data to Derive Scores for Plots

Description

Cross-validated linear discriminant calculations determine the optimum number of features. Test and training scores from successive cross-validation steps determine, via a principal components calculation, a low-dimensional global space onto which test scores are projected, in order to plot them. Further functions are included that are intended for didactic use. The package implements, and extends, methods described in J.H. Maindonald and C.J. Burden (2005) .

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install.packages('hddplot')

Monthly Downloads

53

Version

0.59-2

License

GPL (>= 2)

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Maintainer

John Maindonald

Last Published

September 14th, 2023

Functions in hddplot (0.59-2)

golubInfo

Classifying factors for the 72 columns of the Golub data set
accTrainTest

Two subsets of data each take in turn the role of test set
orderFeatures

Order features, based on their ability to discriminate
scoreplot

Plot discriminant function scores, with various identification
qqthin

a version of qqplot() that thins out points that overplot
plotTrainTest

Plot predictions for both a I/II train/test split, and the reverse
simulateScores

Generate linear discriminant scores from random data, after selection
cvdisc

Cross-validated accuracy, in linear discriminant calculations
Golub

Golub data (7129 rows by 72 columns), after normalization
cvscores

For high-dimensional data with known groups, derive scores for plotting
divideUp

Partition data into mutiple nearly equal subsets
aovFbyrow

calculate aov F-statistic for each row of a matrix
defectiveCVdisc

defective accuracy assessments from linear discriminant calculations
pcp

convenience version of the singular value decomposition