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BCBCSF (version 0.0-0)

Bias-corrected Bayesian Classification with Selected Features

Description

This software is used to predict the discrete class labels based on a selected subset of high-dimensional features, such as expression levels of genes. The data are modeled with a hierarchical Bayesian models using heavy-tailed t distributions as priors. When a large number of features are available, one may like to select only a subset of features to use, typically those features strongly correlated with the response in training cases. Such a feature selection procedure is however invalid since the relationship between the response and the features has be exaggerated by feature selection. This package provides a way to avoid this bias and yield better-calibrated predictions for future cases when one uses F-statistic to select features.

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Version

Install

install.packages('BCBCSF')

Monthly Downloads

233

Version

0.0-0

License

GPL (>= 2)

Maintainer

Longhai Li

Last Published

July 27th, 2011

Functions in BCBCSF (0.0-0)

d4:analyzefit

Functions for analyzing and visualizing a BCBCSF fitting result
d5:lymphoma

Lymphoma Microarray Data
internal

Internal functions used in package `gausspred'
d3:evalpred

A function for evaluating arrays of predictive probabilities with the true class labels of test cases
d1:bcbcsfexamples

Examples of fitting models, predicting class labels, evaluating prediction, and analyzing fitting results
d2:fitpred

Functions for fitting models with MCMC, predicting class labels of test cases, and finding predictive probabilities with cross-validation