Method deprecated or moved
This method is deprecated or moved on the latest stable version.
The last existing version (v2_1_10) is shown here.
fit_power(xs, ys)
public
# File lib/minitest/benchmark.rb, line 310
def fit_power xs, ys
n = xs.size
xys = xs.zip(ys)
slnxlny = sigma(xys) { |x, y| Math.log(x) * Math.log(y) }
slnx = sigma(xs) { |x | Math.log(x) }
slny = sigma(ys) { | y| Math.log(y) }
slnx2 = sigma(xs) { |x | Math.log(x) ** 2 }
b = (n * slnxlny - slnx * slny) / (n * slnx2 - slnx ** 2);
a = (slny - b * slnx) / n
return Math.exp(a), b, fit_error(xys) { |x| (Math.exp(a) * (x ** b)) }
end