Gene expression measurements on 72 leukemia patients, 47 "ALL" (see section 1.2), 25 "AML".
These data arise from the landmark Golub et al (1999) Science paper.
There is a larger set consisting of 7128 genes, which was used in Chapters 1, 10, 11, and possibly elsewhere.
It is stored as the 7128 x 72 matrix (10MB)
leukemia_big.csv, with the column names denoting the class labels.
The histograms in Figure 1.4 arise from row 136 of this matrix, and the histogram in Figure 1.5 is of the 7128 two-sample t-test statistics on the rows (genes).
The data can be read directly into R via the command
leukemia_big <- read.csv("http://hastie.su.domains/CASI_files/DATA/leukemia_big.csv")
There is also a smaller subset of these data, consisting of 3571 genes, used in Section 19.1.
It is stored as the 3571 x 72 matrix (5MB)
leukemia_small.csv, with again the column names denoting the class labels.
The data can be read directly into R via the command
leukemia_small <- read.csv("http://hastie.su.domains/CASI_files/DATA/leukemia_small.csv")
Disclaimer: these data come with a data analysis challenge.
The columns of the two datasets are in different order.
Furthermore, the genes in the big dataset have been transformed, with the exact transformation used lost in time.
We also do not know the correspondence between the 3157 and 7128 genes.
The first person to solve this puzzle completely will be thanked and their name will appear forever on this page.