colon: Simplified Gene Expression Data from Alon et al. (1999)

In dcsvm: Density Convoluted Support Vector Machines

Simplified Gene Expression Data from Alon et al. (1999)

Description

This dataset contains 62 colon tissue samples with 2000 gene expression levels. Among these samples, 40 are tumor tissues (coded as 1) and 22 are normal tissues (coded as -1).

Usage

data(colon)

Details

Simplified Gene Expression Data from Alon et al. (1999)

Gene expression data (2000 genes for 62 samples) from a DNA microarray experiment of colon tissue samples (Alon et al., 1999).

Value

A list with the following elements:

x	A matrix of 62 rows and 2000 columns representing the gene expression levels of 62 colon tissue samples. Each row corresponds to a sample, and each column corresponds to a gene.
y	A numeric vector of length 62 representing the tissue type (1 for tumor; -1 for normal).

Source

The data were introduced in Alon et al. (1999).

References

Alon, U., Barkai, N., Notterman, D.A., Gish, K., Ybarra, S., Mack, D., and Levine, A.J. (1999). “Broad patterns of gene expression revealed by clustering analysis of tumor and normal colon tissues probed by oligonucleotide arrays,” Proceedings of the National Academy of Sciences, 96(12), 6745–6750.

Examples

# Load the dcsvm library
library(dcsvm)

# Load the dataset
data(colon)

# Check the dimensions of the data
dim(colon$x)

# Count the number of samples in each class
sum(colon$y == -1)
sum(colon$y == 1)

dcsvm documentation built on April 3, 2025, 10:27 p.m.