
Leukemia dataset includes the bone marrow samples obtained from acute leukemia patients at the time of diagnosis: 25 acute myeloid leukemia (AML) samples; 9 T-lineage acute lymphoblastic leukemia (ALL) samples; and 38 B-lineage ALL samples. After preprocessing, the 100 genes with the largest variation across samples are selected.
leukemia72_2
A data.frame containing 72 observations of 101 variables: 100 features and class with two diagnosis: 47 ALL and 25 AML).
# NOT RUN {
# load the dataset
data(leukemia72_2)
# X95735_at
with(leukemia72_2, by(X95735_at,Class,mean))
# M27891_at
with(leukemia72_2,tapply(M27891_at, Class, FUN = mean))
with(leukemia72_2, table(M27891_at=ifelse(M27891_at<=mean(M27891_at), "1", "2"), Class))
# }
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