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# This is a demo of H2O's GLM function
# It imports a data set, parses it, and prints a summary
# Then, it runs GLM with a binomial link function using 10-fold cross-validation
# Note: This demo runs H2O on localhost:54321
library(h2o)
h2o.init()
prostate.hex = h2o.uploadFile(path = system.file("extdata", "prostate.csv", package="h2o"), destination_frame = "prostate.hex")
summary(prostate.hex)
prostate.glm = h2o.glm(x = c("AGE","RACE","PSA","DCAPS"), y = "CAPSULE", training_frame = prostate.hex, family = "binomial", alpha = 0.5)
print(prostate.glm)
myLabels = c(prostate.glm@model$x, "Intercept")
plot(prostate.glm@model$coefficients, xaxt = "n", xlab = "Coefficients", ylab = "Values")
axis(1, at = 1:length(myLabels), labels = myLabels)
abline(h = 0, col = 2, lty = 2)
title("Coefficients from Logistic Regression\n of Prostate Cancer Data")
barplot(prostate.glm@model$coefficients, main = "Coefficients from Logistic Regression\n of Prostate Cancer Data")
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