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smc77/normal_equation.R

Created October 24, 2011 00:11
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Normal Equation
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normal_equation.R
data <- read.csv("http://www.statalgo.com/wp-content/uploads/2011/10/housing.csv")
x <- as.matrix(cbind(intercept=rep(1, m), data[, c("area", "bedrooms")]))
theta <- solve(t(x) %*% x) %*% t(x) %*% y
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