Polynomial regression: Difference between revisions

=={{header|Sidef}}==

{{trans|Ruby}}

<lang ruby>var Matrix = require('Math::Matrix');

func regress(x, y, degree) {

var x_data = x.map { |xi| (0..degree).map { |pow| (xi**pow).to_f } };

var mx = Matrix.new(x_data...);

var my = Matrix.new(y.map{[_]}...);

mx.transpose.multiply(mx).invert.multiply(mx.transpose).multiply(my).transpose;

}

var betas = regress(

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],

[1, 6, 17, 34, 57, 86, 121, 162, 209, 262, 321],

2

);

betas.print;</lang>

{{out}}

<pre>

1.00000 2.00000 3.00000

</pre>