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lolR
View on CRAN: Click
here
Download and install lolR package within the R console
Install from CRAN:
install.packages("lolR")
Install from Github:
library("remotes")
install_github("cran/lolR")
Install by package version:
library("remotes")
install_version("lolR", "2.1")
Attach the package and use:
library("lolR")
Maintained by
Eric Bridgeford
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[Scholar Profile | Author Map]
All associated links for this package
First Published: 2018-02-05
Latest Update: 2020-06-26
Description:
Supervised learning techniques designed for the situation when the dimensionality exceeds the sample size have a tendency to overfit as the dimensionality of the data increases. To remedy this High dimensionality; low sample size (HDLSS) situation, we attempt to learn a lower-dimensional representation of the data before learning a classifier. That is, we project the data to a situation where the dimensionality is more manageable, and then are able to better apply standard classification or clustering techniques since we will have fewer dimensions to overfit. A number of previous works have focused on how to strategically reduce dimensionality in the unsupervised case, yet in the supervised HDLSS regime, few works have attempted to devise dimensionality reduction techniques that leverage the labels associated with the data. In this package and the associated manuscript Vogelstein et al. (2017) , we provide several methods for feature extraction, some utilizing labels and some not, along with easily extensible utilities to simplify cross-validative efforts to identify the best feature extraction method. Additionally, we include a series of adaptable benchmark simulations to serve as a standard for future investigative efforts into supervised HDLSS. Finally, we produce a comprehensive comparison of the included algorithms across a range of benchmark simulations and real data applications.
How to cite:
Eric Bridgeford (2018). lolR: Linear Optimal Low-Rank Projection. R package version 2.1, https://cran.r-project.org/web/packages/lolR. Accessed 30 Apr. 2025.
Previous versions and publish date:
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Complete documentation for lolR
Functions, R codes and Examples using
the lolR R package
Some associated functions: lol.classify.nearestCentroid . lol.classify.rand . lol.classify.randomChance . lol.classify.randomGuess . lol.embed . lol.project.bayes_optimal . lol.project.dp . lol.project.lol . lol.project.lrcca . lol.project.lrlda . lol.project.pca . lol.project.pls . lol.project.rp . lol.sims.cigar . lol.sims.cross . lol.sims.fat_tails . lol.sims.mean_diff . lol.sims.qdtoep . lol.sims.random_rotate . lol.sims.rev_rtrunk . lol.sims.rotation . lol.sims.rtrunk . lol.sims.sim_gmm . lol.sims.toep . lol.sims.xor2 . lol.utils.decomp . lol.utils.deltas . lol.utils.info . lol.utils.ohe . lol.xval.eval . lol.xval.optimal_dimselect . lol.xval.split . predict.nearestCentroid . predict.randomChance . predict.randomGuess .
Some associated R codes: bayes_optimal.R . centroid.R . dp.R . embed.R . lol.R . lrcca.R . pca.R . plsda.R . random_classifier.R . rp.R . simulations.R . utils.R . xval.R . Full lolR package functions and examples
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