diabetes: Blood and other measurements in diabetics

diabetesR Documentation

Blood and other measurements in diabetics

Description

The diabetes data frame contains 442 observations used in the Efron et al. "Least Angle Regression" paper.

Format

A data frame with 442 rows and 3 columns:

x

Matrix with 10 numeric columns (standardized)

y

Numeric response vector

x2

Matrix with 64 columns including interactions

Details

The x matrix has been standardized to have unit L2 norm and zero mean in each column. The x2 matrix extends x by adding selected interaction terms.

Source

https://web.stanford.edu/~hastie/Papers/LARS/LeastAngle_2002.ps

References

Efron, Hastie, Johnstone and Tibshirani (2003). "Least Angle Regression" (with discussion), Annals of Statistics.

Examples

data(diabetes)
str(diabetes)
summary(diabetes$y)

## Not run: 
  fit <- islasso(y ~ ., data = data.frame(y = diabetes$y, diabetes$x2),
                 family = gaussian())
  summary(fit, pval = 0.05)
  lambda.aic <- aic.islasso(fit, interval = c(1, 100))
  fit.aic <- update(fit, lambda = lambda.aic)
  summary(fit.aic, pval = 0.05)

## End(Not run)


islasso documentation built on Aug. 9, 2025, 1:06 a.m.

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