diabetes data frame has 442 rows and 3 columns. These are the data used in the Efron et al. "Least Angle Regression" paper and is also available in the
This data frame consists of the following columns:
is a design matrix with 10 columns (no interactions).
is a numeric vector.
is a design matrix with 64 columns (includes interactions.
The x matrix has been standardized to have unit L2 norm in each column and zero mean. The matrix x2 consists of x plus certain interactions.
Efron, B., Hastie, T., Johnstone, I., and Tibshirani, R. (2003). "Least Angle Regression" (with discussion). Annals of Statistics, 32(2): 407-499.
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