| use rulinalg::matrix::Matrix; |
| use rulinalg::vector::Vector; |
| |
| use super::Dataset; |
| |
| /// Load trees dataset. |
| /// |
| /// The data set contains a sample of 31 black cherry trees in the |
| /// Allegheny National Forest, Pennsylvania. |
| /// |
| /// ## Attribute Information |
| /// |
| /// ### Data |
| /// |
| /// ``Matrix<f64>`` contains following columns. |
| /// |
| /// - diameter (inches) |
| /// - height (feet) |
| /// |
| /// ### Target |
| /// |
| /// ``Vector<f64>`` contains volume (cubic feet) of trees. |
| /// |
| /// Thomas A. Ryan, Brian L. Joiner, Barbara F. Ryan. (1976). |
| /// Minitab student handbook. Duxbury Press |
| pub fn load() -> Dataset<Matrix<f64>, Vector<f64>> { |
| let data = matrix![8.3, 70.; |
| 8.6, 65.; |
| 8.8, 63.; |
| 10.5, 72.; |
| 10.7, 81.; |
| 10.8, 83.; |
| 11.0, 66.; |
| 11.0, 75.; |
| 11.1, 80.; |
| 11.2, 75.; |
| 11.3, 79.; |
| 11.4, 76.; |
| 11.4, 76.; |
| 11.7, 69.; |
| 12.0, 75.; |
| 12.9, 74.; |
| 12.9, 85.; |
| 13.3, 86.; |
| 13.7, 71.; |
| 13.8, 64.; |
| 14.0, 78.; |
| 14.2, 80.; |
| 14.5, 74.; |
| 16.0, 72.; |
| 16.3, 77.; |
| 17.3, 81.; |
| 17.5, 82.; |
| 17.9, 80.; |
| 18.0, 80.; |
| 18.0, 80.; |
| 20.6, 87.]; |
| let target = vec![10.3, 10.3, 10.2, 16.4, 18.8, 19.7, 15.6, 18.2, 22.6, 19.9, |
| 24.2, 21.0, 21.4, 21.3, 19.1, 22.2, 33.8, 27.4, 25.7, 24.9, |
| 34.5, 31.7, 36.3, 38.3, 42.6, 55.4, 55.7, 58.3, 51.5, 51.0, |
| 77.0]; |
| Dataset{ data: data, |
| target: Vector::new(target) } |
| } |